Patent Publication Number: US-4843153-A

Title: Azo dyes containing thienothiophene radicals as radicals of the diazo component

Description:
The present invention relates to a thienothiophene dye of the formula I ##STR3## where Z is C 1  -C 8  -alkoxycarbonyl whose alkyl chain may be interrupted by one or more oxygen atoms, or is substituted or unsubstituted phenoxycarbonyl, carbamoyl, C 1  -C 8  -mono-alkylcarbamoyl or -dialkylcarbamoyl, pyrrolidinocarbonyl, piperidinocarbonyl, morpholinocarbonyl, piperazinocarbonyl, (N-C 1  -C 4  -alkyl)piperazinocarbonyl, carboxyl, cyano, C 1  -C 10  -alkanoyl, substituted or unsubstituted phenylcarbonyl, C 1  -C 4  -alkylsulfonyl, substituted or unsubstituted phenylsulfonyl or nitro, X is hydrogen, fluorine, chlorine, bromine, Z or a group of the formula --CH═CT 1  T 2 , --CH═N--OH, --CH═N--NH--C 6  H 5  or ##STR4## where T 1  and T 2  are identical or different and each is, independently of the other, cyano, C 1  -C 8  -alkoxy carbonyl whose alkyl chain may be interrupted by one or more oxygen atoms, or is C 3  -C 6  -alkenyloxycarbonyl, carbamoyl or C 1  -C 4  -mono-alkylaminocarbonyl or -dialkylaminocarbonyl and W is hydrogen, methyl or ethyl, Y is hydrogen, chlorine or bromine and K is the radical of a coupling component. 
     Any alkyl in the formula of the thienothiophene dye according to the invention may be straight-chain or branched. Where substituted phenyl occurs in the formula of the thienothiophene dye according to the invention, the substituents may be C 1  -C 4  -alkyl, C 1  -C 4  -alkoxy or halogen, in particular fluorine, chlorine or bromine. 
     Z and X in the formula I are for example: CHO, CH 3  CO, C 2  H 5  CO, C 3  H 7  CO, C 4  H 9  CO, C 5  H 11  CO, C 7  H 15  CO, ##STR5## C 6  H 5  CO, CH 3  C 6  H 4  CO, ClC 6  H 4  CO, (CH 3 ) 2  C 6  H 3  CO, H 3  COC 6  H 4  CO, Cl 2  C 6  H 3  CO, CH 3  SO 2 , C 2  H 5  SO 2 , C 4  H 9  SO 2 , C 6  H 5  SO 2 , CH 3  C 6  H 4  SO 2 , ClC 6  H 4  SO 2 , COOCH 3 , COOC 2  H 5 , COOC 3  H 7 , COOC 4  H 9 , COOC 6  H 13 , COOC 8  H 17 , ##STR6## COOC 2  H 4  OCH 3 , COOC 2  H 4  OC 2  H 5 , COOC 2  H 4  OC 4  H 9 , COOC 6  H 5 , COOC 6  H 4  CH 3 , CONH 2 , CONHCH 3 , CONHC 2  H 5 , CONHC 4  H 9 , CONHC 6  H 13 , CONHC 8  H 17 , CON(CH 3 ) 2 , CON(C 2  H 5 ) 2 , CON(C 4  H 9 ) 2  or ##STR7## 
     T 1  and T 2  in the formula I are for example methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl, isobutoxycarbonyl, secbutoxycarbonyl, pentyloxycarbonyl, isopentyloxycarbonyl, sec-pentyloxycarbonyl, tert-pentyloxycarbonyl, hexyloxycarbonyl, heptyloxycarbonyl, octyloxycarbonyl, 2-ethylhexyloxycarbonyl, 2-methoxyethoxycarbonyl, 2-ethoxyethoxycarbonyl, 2-butoxyethoxycarbonyl, 3-methoxypropoxycarbonyl, 3,6-dioxaheptyloxycarbonyl, allyloxycarbonyl, 2-methylallyloxycarbonyl, 2-ethylallyloxycarbonyl, methylaminocarbonyl, ethylaminocarbonyl, propylaminocarbonyl, dimethylaminocarbonyl, diethylaminocarbonyl or methyl-ethylaminocarbonyl. 
     K is derived from a coupling component of the formula HK. This type preferably comes from the aniline, α-naphthylamine, pyrazole, aminopyrazole, indole, thiazole, thiophene, phenol, naphthol, tetrahydroquinoline, pyridone or pyridine series, preference being given to coupling components from the aniline, pyrazole, pyridine, thiophene or thiazole series. 
     This coupling component HK has the formula ##STR8## where R 1  is hydrogen, C 1  -C 4  -alkyl which may be substituted by phenyl, or substituted or unsubstituted phenyl, R 2  is hydrogen or R 3 , R 3  is substituted or unsubstituted C 1  -C 6  -alkyl, C 5  -C 7  -cycloalkyl, C 3  -C 4  -alkenyl or substituted or unsubstituted phenyl, R 4  and R 5  are each independently of the other hydrogen, C 1  -C 4  -alkyl, C 1  -C 4  -alkoxy, phenoxy, benzyloxy, halogen, C 1  -C 4  -alkylsulfonylamino, C 1  -C 4  -dialkylaminosulfonylamino, substituted or unsubstituted C 1  -C 6  -alkanoylamino, benzoylamino or C 1  -C 4  -alkoxycarbonylamino, R 6  is cyano, carbamoyl, C 1  -C 4  -monoalkylcarbamoyl or -dialkylcarbamoyl, nitro or C 1  -C 8  -alkoxycarbonyl whose alkyl chain may be interrupted by one or more oxygen atoms, and R 7  is halogen, nitro, substituted or unsubstituted phenyl, C 1  -C 10  -alkyl or C 1  -C 10  -alkoxy, where in either case the alkyl chain may be interrupted by one or more oxygen atoms and/or substituted by phenyl, or is phenoxy, C 1  -C 4  -monoalkylamino or -dialkylamino, C 1  -C 4  -alkylthio, phenylthio, C 1  -C 4  -alkoxycarbonyl, C 1  -C 5  -alkanoylamino, C 1  -C 4  -alkoxycarbonylmethyl or cyanomethyl. 
     Specific examples of R 1 , in addition to those already mentioned, are methyl, ethyl, propyl, butyl, benzyl, 2-phenylethyl, phenyl, o-, m- or p-tolyl and o-, m- or p-chlorophenyl. 
     Examples of R 3 , in addition to those already mentioned, are C 1  -C 6  -alkyl, which may be monosubstituted or polysubstituted by chlorine, bromine, hydroxyl, C 1  -C 8  -alkoxy, propargyloxy, phenoxy, phenyl, cyano, carboxyl, C 1  -C 8  -alkanoyloxy, C 1  -C 8  -alkoxy-C 1  -C 4  -alkoxy, benzoyloxy, o-, m- or p-methylbenzoyloxy, o-, m- or p-chlorobenzoyloxy, C 1  -C 8  -alkoxyalkanoyloxy, phenoxyalkanoyloxy, C 1  -C 8  -alkoxycarbonyloxy, C 1  -C 8  -alkoxyalkoxycarbonyloxy, benzyloxycarbonyloxy, phenethyloxycarbonyloxy, phenoxyethoxycarbonyloxy, C 1  -C 8  -alkylaminocarbonyloxy, cyclohexylaminocarbonyloxy, phenylaminocarbonyloxy, C 1  -C 8  -alkoxycarbonyl, C 1  -C 8  -alkoxyalkoxycarbonyl, phenoxycarbonyl, benzyloxycarbonyl, phenoxy-C 1  -C 4  -alkoxy or phenethyloxycarbonyl. 
     Specific examples of R 3  are methyl, ethyl, propyl, butyl, pentyl, hexyl, benzyl, 2-phenylethyl, allyl, methallyl, 2-chloroethyl, 2-bromoethyl, 2-cyanoethyl, 2-hydroxyethyl, 2-phenyl-2-hydroxyethyl, 2,3-dihydroxypropyl, 2-hydroxypropyl, 2-hydroxybutyl, 2-hydroxy-3-phenoxypropyl, 2-hydroxy-3-methoxypropyl, 2-hydroxy-3-butoxypropyl, 3-hydroxypropyl, 2-methoxyethyl, 2-ethoxyethyl, 2-propoxyethyl, 2-butoxyethyl, 2-phenoxyethyl, 2-phenoxypropyl, 2-acetoxyethyl, 2-propionyloxyethyl, 2-butyryloxyethyl, 2-isobutyryloxyethyl, 2-methoxymethylcarbonyloxyethyl, 2-ethoxymethylcarbonyloxyethyl, 2-phenoxymethylcarbonyloxyethyl, 2-methoxycarbonyloxyethyl, 2-ethoxycarbonyloxyethyl, 2-propoxycarbonyloxyethyl, 2-butoxycarbonyloxyethyl, 2-phenyloxycarbonyloxyethyl, 2-benzyloxycarbonyloxyethyl, 2-methoxyethoxycarbonyloxyethyl, 2-ethoxyethoxycarbonyloxyethyl, 2-propoxyethoxycarbonyloxyethyl, 2-butoxyethoxycarbonyloxyethyl, 2-methylaminocarbonyloxyethyl, 2-ethylaminocarbonyloxyethyl, 2-propylaminocarbonyloxyethyl, 2-butylaminocarbonyloxyethyl, 2-methoxycarbonylethyl, 2-ethoxycarbonylethyl, 2-propoxycarbonylethyl, 2-butoxycarbonylethyl, 2-phenoxycarbonylethyl, 2-benzyloxycarbonylethyl, 2-β-phenylethoxycarbonylethyl, 2-methoxyethoxycarbonylethyl, 2-ethoxyethoxycarbonylethyl, 2-propoxyethoxycarbonylethyl, 2-butoxyethoxycarbonylethyl, 2-phenoxyethoxycarbonylethyl, 2-benzoylethyl, cyclopentyl, cyclohexyl, cycloheptyl, allyl, methallyl, phenyl, 2-methylphenyl and 4-chlorophenyl. 
     Where R 4  and R 5  are each substituted C 1  -C 6  -alkanoyl amino, suitable substituents are for example, chlorine, bromine, cyano, methoxy, ethoxy or phenoxy. Suitable R 4  and R 5 , in addition to those already mentioned, are for example hydrogen, methyl, ethyl, propoyl, bromine, chlorine, methoxy, ethoxy, methylsulfonylamino, dimethylaminosulfonylamino, methoxycarbonylamino or ethoxycarbonylamino. 
     Examples R 6 , in addition to those already mentioned, are methylaminocarbonyl, dimethylaminocarbonyl, ethylaminocarbonyl, diethylaminocarbonyl, methoxycarbonyl, ethoxycarbonyl, n- or i-propoxycarbonyl, n-, i- or sec-butoxycarbonyl, methoxyethoxycarbonyl, ethoxyethoxycarbonyl, n- or i-propoxyethoxycarbonyl and n-, i- or sec-butoxyethoxycarbonyl. 
     Examples of R 7 , in addition to those already mentioned, are benzyl, benzyloxy, chlorine, bromine, C 1  -C 4  -alkoxyethoxy, acetylamino, propionylamino, butyrylamino and valerylamino. 
     Particular importance is given to thienothiophene dyes of the formula I containing coupling components from the aniline, α-naphthylamino, thiazole, thiophene or pyridine series. 
     Particular preference is given to those thienothiophene dyes of the formula I where X is formyl, acetyl, C 1  -C 4  -alkoxycarbonyl, nitro or cyano, Y is hydrogen, Z is cyano, C 1  -C 2  -alkoxycarbonyl, C 1  -C 2  -monoalkylcarbamoyl, C 1  -C 2  -alkylsulfonyl or phenylsulfonyl, and K is the radical of a coupling component of the aniline, thiazole or pyridine series. 
     A mention has to be given in particular to those thienothiophene dyes of the formula I where Z is cyano, methoxycarbonyl or ethoxycarbonyl. 
     To prepare the thienothiophene dye of the formula I, a thienothiophene of the formula II ##STR9## where X, Y and Z each have the abovementioned meanings, can be diazotized and reacted with a coupling component of the formula III 
     
         HK                                                         (III) 
    
     where K has the abovementioned meanings, in a conventional manner. Details of the preparation are revealed in the Examples. 
     The thienothiophene of the formula II can be obtained for example by reacting a thiophene of the formula IV ##STR10## where Z has the abovementioned meanings, with a mercaptan of the formula V 
     
         A--CH.sub.2 --SH                                           (V) 
    
     where A is an electron-attracting radical. 
     The thienothiophene of the formula II were X is hydrogen, fluorine, chlorine or bromine can be obtained by further reaction from the compound of the formula VI ##STR11## where A and Z each have the abovementioned meanings. In the same way, the thienothiophene of the formula II where Y is not hydrogen can be prepared by introducing chlorine or bromine into a compound of the formula VI. 
     Furthermore, to prepare the thienothiophene dye of the formula I it is also possible to react a thiophene dye of the formula VII ##STR12## where K and Z each have the abovementioned meaning and Hal is halogen with a mercaptan (V). Details can again be found in the Examples. 
     In those compounds of the formulae I and II where X is formyl, this formyl group can be further reacted in a conventional manner. Possibilities are for example the condensation with hydroxylamine and, if desired, an acylation on the oxygen to form a nitrile or the reaction with phenylhydrazine or with an active methyl compound by Knoevenagel or Perkin. 
     The thienothiophene dye according to the invention is highly suitable for dyeing synthetic fibers, preferably polyesters and nylons, and blend fabrics of polyesters and cellulose fibers or cellulose esters. The dyeings obtained have good fastness properties, in particular on polyester. 
     Given a suitable structure, the dye may also be dischargeable under alkaline and/or reducing conditions in a conventional manner. 
     The Examples which follow illustrate the invention in more detail. The parts and percentages are by weight, unless otherwise stated. 
    
    
     EXAMPLE 1 ##STR13## 
     A mixture of 18.7 parts of 2-amino-4-chloro-3-cyano-5-formylthiophene, 13.8 parts of potassium carbonate and 80 parts of N,N-dimethylformamide was introduced first, and 9 parts of acetonylmercaptan were then added. After the exothermic reaction had died down, the mixture was heated at 60° C. for 1 hour and then discharged onto water. The precipitate was filtered off with suction, washed with water and dried. This gave 17.9 parts (81% of theory) of 5-acetyl-2-amino-3-cyanothieno[3,2-b]thiophene. 
     Melting point: 285° C. (decomposition, from methylglycol). 
     IR (KBr): 3,419, 3,326 (NH 2 ), 2,205 (CN), 1,654, 1,629 cm -1  C 9  H 6  N 2  OS 2  (222). 
     Calculated: C: 48.6, H: 2.7, N: 12.6, S: 28.9. Found: C: 48.2, H: 2.8, N: 12.4, S: 28.6. 
     EXAMPLE 2 ##STR14## 
     120 parts of ethyl thioglycolate were added to a mixture of 241.5 parts of N,N-dimethyl-N&#39;-(4-chloro-3-cyano-5-formylthien-2-yl)formamidine, 138 parts of potassium carbonate and 1,400 parts of N,N-dimethylformamide. After the slightly exothermic reaction had died down, the reaction mixture was stirred at 50° C. for 2 hours. 1,000 parts of ice, 1,000 parts of water and 150 parts of concentrated hydrochloric acid were then added. The precipitate was filtered off with suction, washed with water and dried. This gave 284 parts (93% of theory) of N,N-dimethyl-N&#39;-(3-cyano-5-ethoxycarbonylthieno[3,2-b]thien-2-yl)formamidine. 
     Melting point: 168° C. (from glacial acetic acid). 
     IR (KBr): 2,206 (CN), 1,701, 1,689 (C═O) 1,634, 1,623 cm -1 . C 13  H 13  N 3  O 2  S 2  (307). 
     Calculated: C: 50.8, H: 4.3, N: 13.7, O: 10.4, S: 20.9. Found: C: 50.9, H: 4.2, N: 13.7, O: 10.4, S: 20.3. 
     EXAMPLE 3 ##STR15## 
     A mixture of 319 parts of N,N-dimethyl-N&#39;-(3-cyano-5-ethoxycarbonylthieno[3,2-b]thien-2-yl)formamidine, 2,000 parts of ethanol and 210 parts of concentrated hydrochloric acid was heated at the boil for 1 hour. After cooling down, the precipitate was filtered off with suction, washed with methanol and then with water and dried. This gave 210 parts (80% of theory) of ethyl 2-amino-3-cyanothieno[3,2-b]thiophene-5-carboxylate. 
     Melting point: 250° C. (from glacial acetic acid). 
     IR (KBr): 3,418, 3,322 (NH 2 ), 2,205 (CN), 1,712, 1,694 cm -1 . C 10  H 8  N 2  O 2  S 2  (252). 
     Calculated: C: 47.6, H: 3.2, N: 11.1, O: 12.7, S: 25.4. Found: C: 47.6, H: 3.3, N: 11.0, O: 13.1, S: 25.2. 
     EXAMPLE 4 ##STR16## 
     25.2 parts of 2-amino-3-cyanothieno[3,2-b]thiophene-5-carboxylate were added to a solution of 11.2 parts of potassium hydroxide, 10 parts of water and 150 parts of ethanol. The mixture was heated at the boil for 2 hours. The precipitate was then filtered off with suction, washed with ethanol and added to dilute hydrochloric acid. The hydrochloric acid suspension was stirred at room temperature for 3 hours. The product was then filtered off with suction and washed with water. Drying left 15 parts (67% of theory) of 2-amino-3-cyanothieno[3,2-b]thiophene-5-carboxylic acid. 
     Melting point: 280° C. (decomposition). 
     IR (KBr): 3,421, 3,329 (NH 2 ), 3,200-2,350 (OH), 2,206 (CN), 1,661, 1,627 cm -1 . 
     C 8  H 4  N 2  O 2  S 2  (224). 
     Calculated: C: 42.9, H: 1.8, N: 12.5, O: 14.3, S: 28.6. Found: C: 42.5, H: 1.9, N: 12.2, O: 15.3, S: 27.9. 
     Table 1 below gives 2-aminothieno[3,2-b]thiophenes of the formula ##STR17## which can be obtained in a similar manner. 
     
                       TABLE 1                                                     
______________________________________                                    
Example   X             Y     Z                                           
______________________________________                                    
 5        CN            H     CN                                          
 6        NO.sub.2      H     CN                                          
 7        CO.sub.2 CH.sub.3                                               
                        H     CN                                          
 8        CHO           H     CN                                          
 9        Cl            H     CN                                          
10        Br            H     CN                                          
11        H             H     CN                                          
12        CN            Cl    CN                                          
13        COCH.sub.3    H     CO.sub.2 C.sub.2 H.sub.5                    
14        CO.sub.2 C.sub.2 H.sub.5                                        
                        H     CO.sub.2 C.sub.2 H.sub.5                    
15        CN            H     CO.sub.2 C.sub.2 H.sub.5                    
16        NO.sub.2      H     CO.sub.2 C.sub.2 H.sub.5                    
17        COCH.sub.3    H     CO.sub.2 CH.sub.3                           
18        CO.sub.2 CH.sub.3                                               
                        H     CO.sub.2 CH.sub.3                           
19        CN            H     CO.sub.2 CH.sub.3                           
20        C.sub.6 H.sub.5 CO                                              
                        H     CN                                          
______________________________________                                    
 
    
     EXAMPLE 21 
     5.55 parts of 5-acetyl-2-amino-3-cyanothieno[3,2-b]thiophene were suspended at 0°-5° C. in 75 parts by volume of 3:1 glacial acetic acid/propionic acid and 50 parts by volume of 85% strength sulfuric acid. 8.25 parts of nitrosylsulfuric acid (11.5% of N 2  O 3 ) were added dropwise with stirring. The mixture was then stirred at 0°-5° C. for 3 hours. 
     This diazonium salt solution was added at about 0° C. with stirring to a mixture of 5.65 parts of 3-(N,N-diethylamino)-1-acetanilide and 0.5 part of sulfamic acid in 100 parts by volume of N,N-dimethylformamide. The temperature was maintained by external cooling and sprinkling in about 400 parts of ice. The resulting dye suspension was then stirred for 3-4 hours. The dye of the formula ##STR18## was filtered off with suction, washed with water until neutral and dried (9.1 parts). It dyes polyester fiber material in blue shades having very good fastness properties. 
     The dyes listed in Tables 2 and 3 below can be prepared in a similar manner. 
     The dyes of Table 2 conform to the formula 
     
                                           TABLE 2                                 
__________________________________________________________________________
 ##STR19##                                                                
                                                  Hue                     
Exp.                                                                      
   X    Y  Z    R.sup.5    R.sup.4                                        
                                R.sup.3  R.sup.2  on PES                  
__________________________________________________________________________
22 COCH.sub.3                                                             
        H  CN   CH.sub.3   H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  reddish                 
                                                  blue                    
23 COCH.sub.3                                                             
        H  CN   CH.sub.3   H    C.sub.4 H.sub.9                           
                                         C.sub.4 H.sub.9                  
                                                  reddish                 
                                                  blue                    
24 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.2 Cl                                           
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
25 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.2 OCH.sub.3                                    
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
26 COCH.sub.3                                                             
        H  CN   NHCOC.sub.2 H.sub. 5                                      
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
27 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.4 H.sub.9                           
                                         C.sub.4 H.sub.9                  
                                                  blue                    
28 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           OCH.sub.3                                      
                                C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  greenish                
                                                  blue                    
29 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           OC.sub.2 H.sub.5                               
                                C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  greenish                
                                                  blue                    
30 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           OCH.sub.3                                      
                                C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  greenish                
                                                  blue                    
31 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           OCH.sub.3                                      
                                C.sub.2 H.sub.4 CN                        
                                         CH.sub.2 CHCH.sub.2              
                                                  greenish                
                                                  blue                    
32 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.4 OCH.sub.3                 
                                         C.sub.2 H.sub.5                  
                                                  blue                    
33 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.4 OCH.sub.3                 
                                         C.sub.2 H.sub.4 OCH.sub.3        
                                                  blue                    
34 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.4 H.sub.8 OCOCH.sub.3               
                                         C.sub.4 H.sub.8 OCOCH.sub.3      
                                                  blue                    
35 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           H    CH.sub.2 CHCH.sub.2                       
                                         CH.sub.2 CHCH.sub.2              
                                                  blue                    
36 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.2 CN                                           
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
37 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.2 C.sub.6 H.sub.5                              
                           H    n-C.sub.3 H.sub.7                         
                                         n-C.sub.3 H.sub.7                
                                                  blue                    
38 COCH.sub.3                                                             
        H  CN   CH.sub.3   H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.4 OH               
                                                  reddish                 
                                                  blue                    
39 COCH.sub.3                                                             
        H  CN   CH.sub.3   H    C.sub.2 H.sub.4 OH                        
                                         C.sub.2 H.sub.4 OH               
                                                  reddish                 
                                                  blue                    
40 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  navy                    
41 COCH.sub.3                                                             
        H  CN   CH.sub.3   OCH.sub.3                                      
                                C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  blue                    
42 COCH.sub.3                                                             
        H  CN   H          H    C.sub.2 H.sub.5                           
                                         C.sub.6 H.sub.5                  
                                                  bluish                  
                                                  violet                  
43 COCH.sub.3                                                             
        H  CN   NHSO.sub.2 CH.sub.3                                       
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
44 COCH.sub.3                                                             
        H  CN   NHCOC.sub.2 H.sub.5                                       
                           H    C.sub.2 H.sub.4 OH                        
                                         C.sub.2 H.sub.4 OH               
                                                  blue                    
45 COCH.sub.3                                                             
        H  CN   H          OCH.sub.3                                      
                                C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
46 COCH.sub.3                                                             
        H  CN   CH.sub.3   H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.4 CN               
                                                  bluish                  
                                                  violet                  
47 COCH.sub.3                                                             
        H  CN   NHCOOC.sub.2 H.sub.5                                      
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.4 OH               
                                                  reddish                 
                                                  red                     
48 COCH.sub.3                                                             
        H  CN   H          OCH.sub.3                                      
                                C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  blue                    
49 COCH.sub.3                                                             
        H  CN   NHCOCH(CH.sub.3).sub.2                                    
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
50 COCH.sub.3                                                             
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.4 CN                        
                                         C.sub.2 H.sub.5                  
                                                  reddish                 
                                                  blue                    
51 COCH.sub.3                                                             
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
52 COCH.sub.3                                                             
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                NHCOC.sub.2 H.sub.5                                       
                           CH.sub.3                                       
                                n-C.sub.3 H.sub.7                         
                                         n-C.sub.3 H.sub.7                
                                                  blue                    
53 COCH.sub.3                                                             
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                NHCOCH.sub.2 OCH.sub.3                                    
                           H    C.sub.2 H.sub.4 OCH.sub.3                 
                                         C.sub.2 H.sub.4 OCH.sub.3        
                                                  blue                    
54 COCH.sub.3                                                             
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                NHCOCH.sub.3                                              
                           OCH.sub.3                                      
                                C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  greenish                
                                                  blue                    
55 COCH.sub.3                                                             
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                CH.sub.3   H    C.sub.2 H.sub.4 CN                        
                                         C.sub.2 H.sub.5                  
                                                  bluish                  
                                                  violet                  
56 COCH.sub.3                                                             
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                H          H    C.sub.2 H.sub.4 CN                        
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  violet                  
57 COCH.sub.3                                                             
        H  CO.sub.2 CH.sub.3                                              
                NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
58 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           H    n-C.sub.4 H.sub.9                         
                                         n-C.sub.4 H.sub.9                
                                                  reddish                 
                                                  blue                    
59 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.4 OH                        
                                         C.sub.2 H.sub.4 OH               
                                                  reddish                 
                                                  blue                    
60 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.2 OC.sub.6 H.sub.5                             
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  reddish                 
                                                  blue                    
61 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   CH.sub.3   H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  voilet                  
62 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   H          H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  voilet                  
63 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.5                           
                                         reddish                          
                                                  blue                    
64 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           OCH.sub.3                                      
                                C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  blue                    
65 CO.sub.2 CH.sub.3                                                      
        H  CN   NHCOCH.sub.3                                              
                           H    n-C.sub.3 H.sub.7                         
                                         n-C.sub.3 H.sub.7                
                                                  reddish                 
                                                  blue                    
66 CO.sub.2 CH.sub.3                                                      
        H  CN   CH.sub.3   H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.4 CN               
                                                  violet                  
67 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   CH.sub.3   OCH.sub.3                                      
                                C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  blue                    
68 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   CH.sub.3   H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.4 OH               
                                                  reddish                 
                                                  blue                    
69 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  reddish                 
                                                  blue                    
70 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                CH.sub.3   H    C.sub.2 H.sub.4 OH                        
                                         C.sub.2 H.sub.4 OH               
                                                  reddish                 
                                                  blue                    
71 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                CH.sub.3   H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.4 CN               
                                                  violet                  
72 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.4 H.sub.9                           
                                         C.sub.4 H.sub.9                  
                                                  reddish                 
                                                  blue                    
73 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOC.sub.2 H.sub.5                                       
                           H    C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4                  
                                                  bluishsub.3             
                                                  violet                  
74 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.2 OCH.sub.3                                    
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
75 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   H          H    C.sub.2 H.sub.4 CN                        
                                         C.sub.2 H.sub.5                  
                                                  violet                  
76 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   CH.sub.3   H    C.sub.2 H.sub.4 CN                        
                                         C.sub.2 H.sub.5                  
                                                  violet                  
77 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           OCH.sub.3                                      
                                C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  greenish                
                                                  blue                    
78 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
79 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.4 OH                        
                                         C.sub.2 H.sub.4 OH               
                                                  blue                    
80 CO.sub.2 C.sub.2 H.sub.5                                               
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.2 H.sub.4 CN                        
                                         C.sub.2 H.sub.5                  
                                                  reddish                 
                                                  blue                    
81 NO.sub.2                                                               
        H  CN   NHCOCH.sub.3                                              
                           H    C.sub.3 H.sub.7                           
                                         C.sub.3 H.sub.7                  
                                                  blue                    
82 NO.sub.2                                                               
        H  CN   NHCOCH.sub.3                                              
                           OCH.sub.2 H.sub.5                              
                                C.sub.2 H.sub.4 CN                        
                                         CH.sub.2 CHCH.sub.2              
                                                  greenish                
                                                  blue                    
83 NO.sub.2                                                               
        H  CN   NHCOCH.sub.3                                              
                           H    CH.sub.2 CHCH.sub.2                       
                                         CH.sub.2 CHCH.sub.2              
                                                  blue                    
84 NO.sub.2                                                               
        H  CN   NHCOCH.sub.2 OCH.sub.3                                    
                           H    C.sub.2 H.sub.4 OCOCH.sub.3               
                                         C.sub.2 H.sub.4 OCOCH.sub.3      
                                                  blue                    
85 NO.sub.2                                                               
        H  CN   NHCOCH.sub.2 Cl                                           
                           H    C.sub.4 H.sub.9                           
                                         C.sub.4 H.sub.9                  
                                                  blue                    
86 NO.sub.2                                                               
        H  CN   CH.sub.3   H    C.sub.2 H.sub.4 OH                        
                                         C.sub.2 H.sub.5                  
                                                  reddish                 
                                                  blue                    
87 H    H  CN   NHCOCH.sub.3                                              
                           H    C.sub.4 H.sub.9                           
                                         C.sub.4 H.sub.9                  
                                                  violet                  
88 Cl   H  CN   H          C.sub.2 H.sub.5                                
                                C.sub.2 H.sub.5                           
                                         voilet                           
89 CN   Cl CN   CH.sub.3   H    C.sub.2 H.sub.4 CN                        
                                         C.sub.2 H.sub.5                  
                                                  voilet                  
90 COCH.sub.3                                                             
        H  CO.sub.2 C.sub.2 H.sub.5                                       
                NHCOCH.sub.2 Cl                                           
                           H    C.sub.2 H.sub.5                           
                                         C.sub.2 H.sub.5                  
                                                  blue                    
__________________________________________________________________________
 
    
     The dyes of Table 3 conform to the formula 
     
                       TABLE 3                                                     
______________________________________                                    
 ##STR20##                                                                
                                  Hue                                     
Exp.                              on                                      
No.  K                            PES                                     
______________________________________                                    
91                                                                        
      ##STR21##                   blue                                    
92                                                                        
      ##STR22##                   blue                                    
93                                                                        
      ##STR23##                   blue                                    
94                                                                        
      ##STR24##                   blue                                    
95                                                                        
      ##STR25##                   blue                                    
96                                                                        
      ##STR26##                   blue                                    
97                                                                        
      ##STR27##                   blue                                    
98                                                                        
      ##STR28##                   blue                                    
99                                                                        
      ##STR29##                   blue                                    
100                                                                       
      ##STR30##                   blue                                    
101                                                                       
      ##STR31##                   blue                                    
102                                                                       
      ##STR32##                   blue                                    
103                                                                       
      ##STR33##                   vio- let                                
104                                                                       
      ##STR34##                   red- dish vio- let                      
105                                                                       
      ##STR35##                   blu- ish vio- let                       
______________________________________                                    
 
    
     EXAMPLE 106 
     0.57 part of p-dithiane-2,5-diol and 0.7 part of potassium carbonate were added to 2.08 parts of 4-chloro-3-cyano-5-formyl-2-(4&#39;-N,N-dibutylamino-2&#39;-methylphenylazo)thiophene in 50 parts by volume of N,N-dimethylformamide. The reaction mixture was stirred at 50° C. under N 2  for 4 hours and then poured onto 500 parts of water. The dye was salted out with NaCl, filtered with suction and washed with water. This gave 1.8 parts of the dye of the formula ##STR36## which dyes polyester fibers in blue, fast shades. 
     EXAMPLE 107 
     1.35 parts of 30% strength methanolic sodium methylate solution and 0.9 part of ethyl mercaptoacetate were added to 2.3 parts of 4-chloro-3-cyano-5-formyl-2-(4&#39;-N,N-dibutylamino-2&#39;-acetylaminophenylazo)thiophene in 60 parts by volume of methanol and 50 parts by volume of N,N-dimethylformamide. The mixture was stirred at 25° C. for 10 hours and then at 50° C. for 2 hours and was then discharged onto 500 parts of water. The product was salted out with NaCl, filtered off with suction and washed with water. This gave 2.5 parts of the dye described in Example 58. 
     EXAMPLE 108 
     1.75 parts of the dye described in Example 106 were stirred at 25° C. with 0.9 part of ethyl cyanoacetate in 70 parts by volume of dioxane, 0.5 part by volume of glacial acetic acid and 0.5 part by volume of piperidine for 24 hours. 25 parts of water and 25 parts of ice were then added. After 15 minutes of stirring, the product was filtered off with suction and washed until neutral. Drying under reduced pressure at 40° C. left 1.7 parts of the dye of the formula ##STR37## which dyes polyester fibers in greenish blue shades. 
     Table 4 lists dyes of the formula ##STR38## which can be obtained in a similar manner. 
     
                                           TABLE 4                                 
__________________________________________________________________________
                                  Hue                                     
Exp.                                                                      
   X   Y Z    R.sup.5                                                     
                     R.sup.4                                              
                         R.sup.3                                          
                              R.sup.2                                     
                                  on PES                                  
__________________________________________________________________________
109                                                                       
   CHO H CN   NHCOCH.sub.3                                                
                     H   C.sub.2 H.sub.5                                  
                              C.sub.2 H.sub.5                             
                                  blue                                    
110                                                                       
   CHO H CN   NHCOC.sub.2 H.sub.5                                         
                     H   C.sub.2 H.sub.5                                  
                              C.sub.2 H.sub.5                             
                                  blue                                    
111                                                                       
   CHO H CN   CH.sub.3                                                    
                     H   C.sub.2 H.sub.5                                  
                              C.sub.2 H.sub.5                             
                                  reddish                                 
                                  blue                                    
112                                                                       
   CHO H CO.sub.2 C.sub.2 H.sub.5                                         
              NHCOC.sub.2 H.sub.5                                         
                     H   n-C.sub.4 H.sub.9                                
                              n-C.sub.4 H.sub.9                           
                                  blue                                    
113                                                                       
   CHO H CN   CH.sub.3                                                    
                     H   C.sub.2 H.sub.4 CN                               
                              C.sub.2 H.sub.5                             
                                  blue                                    
114                                                                       
   CHO H CN   NHCOCH.sub.3                                                
                     OCH.sub.3                                            
                         C.sub.2 H.sub.5                                  
                              C.sub.2 H.sub.5                             
                                  greenish                                
                                  blue                                    
115                                                                       
   X*  H CN   CH.sub.3                                                    
                     H   C.sub.2 H.sub.4 CN                               
                              C.sub.2 H.sub.5                             
                                  blue                                    
116                                                                       
   X** H CN   H      H   C.sub.2 H.sub.5                                  
                              C.sub.2 H.sub.5                             
                                  blue                                    
117                                                                       
   X*  H CN   CH.sub.3                                                    
                     H   n-C.sub.4 H.sub.9                                
                              n-C.sub.4 H.sub.9                           
                                  greenish                                
                                  blue                                    
__________________________________________________________________________
 ##STR39##                                                                
 ##STR40##