# Patent

## Title
Merocyanine derivatives

## Abstract

Disclosed are merocyanine derivatives of formula (1), wherein R1 and R2 independently from each other are branched C4-C22alkyl; or branched C4-C12 alkenyl; R3 and R4 independently from each other are cyano; COR7, COOR7; CONR7R8; SO2(C6-C12)aryl; C2-C12alk-1-enyl; C3-C12cycloalk-1-enyl; C2-C12alk-1-inyl; C2-C12heteroalkyl; C3-C5heterocycloalkyl; C6-C10aryl; or C1-C9heteroaryl; wherein at least one of R3 and R4 is cyano; R5 and R6 independently from each other are hydrogen; C1-C6alkyl; C5-C8cycloalkyl which may be substituted by one or more than one C1-C4alkyl; and R7 and R8 independently from each other are hydrogen; C1-C22alkyl; C2-C12alkenyl; C2-C12alkinyl; C3-C12cycloalkyl; C3-C12cycloalkenyl; —(CH2)tCOOH; C7-C12aralkyl; C1-C12heteroalkyl; C2-C11heteroaralkyl; C6-C10aryl; C1-C9heteroaryl. The compounds are useful as UV absorbers for protecting human hair and skin against the damaging effect of UV radiation.

## Background
The present invention relates to the compounds of formula




    R1 and R2 independently from each other are branched C4-C22alkyl; or branched C4-C12alkenyl;
    R3 and R4 independently from each other are cyano; COR7, COOR7; CONR7R8; SO2(C6-C12)aryl; C2-C12alk-1-enyl; C3-C12cycloalk-1-enyl; C2-C12alk-1-inyl; C2-C12heteroalkyl; C3-C5heterocycloalkyl; C6-C10aryl; or C1-C9heteroaryl; wherein at least one of R3 and R4 is cyano;
    R5 and R6 independently from each other are hydrogen; or C1-C6alkyl; and
    R7 and R8 independently from each other are hydrogen; C1-C22alkyl; C2-C12alkenyl; C2-C12alkinyl; C3-C12cycloalkyl; C3-C12cycloalkenyl; —(CH2)tCOOH; C7-C12aralkyl; C1-C12heteroalkyl; C2-C11heteroaralkyl; C6-C10aryl; C1-C9heteroaryl.


Alkyl (for the definitions of R5, R6, R7 and R8), cycloalkyl, alkenyl or cycloalkenyl may be straight chained or branched, monocyclic or polycyclic.
Alkyl is for example methyl, ethyl, n-propyl, isopropyl, n-butyl, sec.-butyl, isobutyl, tert.-butyl, n-pentyl, 2-pentyl, 3-pentyl, 2,2-dimethylpropyl, n-hexyl, n-octyl, 1,1,3,3-tetramethylbutyl, 2-ethylhexyl, nonyl, decyl, n-octadecyl, eicosyl or dodecyl.
Examples for branched alkyl (for the definitions of R1 and R2) are 1-methylpropyl; 1,3-dimethylbutyl; 2-methylbutyl; 1,1,3,3-tetramethylbutyl; 3-methylbutyl; 7-methyloctyl; 2-ethylhexyl; or 4-methylcyclohexyl.
Alkenyl is for example straight-chain C2-C12alkenyl or preferably branched C3-C12alkenyl like vinyl, allyl, 2-propen-2-yl, 2-buten-1-yl, 3-buten-1-yl, 1,3-butadien-2-yl, 2-cyclobuten-1-yl, 2-penten-1-yl, 3-penten-2-yl, 2-methyl-1-buten-3-yl, 2-methyl-3-buten-2-yl, 3-methyl-2-buten-1-yl, 1,4-pentadien-3-yl, 2-cyclopenten-1-yl, 2-cyclohexen-1-yl, 3-cyclohexen-1-yl, 2,4-cyclohexadien-1-yl, 1-p-menthen-8-yl, 4(10)-thujen-10-yl, 2-norbornen-1-yl, 2,5-norbornadien-1-yl, 7,7-dimethyl-2,4-norcaradien-3-yl or the different isomers of hexenyl, octenyl, nonenyl, decenyl oder dodecenyl.
C5-C8cycloalkyl is for example, cyclopentyl, trimethylcyclohexyl, cyclooctyl or preferably cyclohexyl.
C1-C9heteroaryl is an unsaturated or aromatic radical having 4n+2 conjugated T-electrons, for example 2-thienyl, 2-furyl, 2-pyridyl, 2-thiazolyl, 2-oxazolyl, 2-imidazolyl, isothiazolyl, triazolyl, tetrazolyl or another ring system selected from thiophene-, furan-, pyridine, thiazol, oxazol, imidazol, isothiazol, triazol, pyridine- and benzene rings, which are unsubstituted or substituted by 1 to 6 ethyl, methyl, ethylene and/or methylene, like benzotriazolyl, in the case of N-heterocycles optionally in the form of their N-oxides.
Preferred are compounds of formula (1), wherein

    R1 and R2 independently from each other are branched C4-C22alkyl; or branched C4-C12 alkenyl;
    R3 and R4 independently from each other are cyano; COR7, COOR7; CONR7R8; SO2(C6-C12)aryl;
    R5 and R6 independently from each other are hydrogen; C1-C6alkyl; C5-C8cycloalkyl which may be substituted by one or more than one C1-C4alkyl; and
    R7 and R8 independently from each other are hydrogen; or C1-C22alkyl.


More preferred compounds of formula (1) are those, wherein

    R3 is cyano;
    R4 is cyano; COR7, COOR7; CONR7R8; SO2(C6-C12)aryl; and
    R1, R2, R5, R6, R7 and R8 are defined as in formula (1).


Most preferred are compounds of formula (1), wherein

    R1 and R2 are identical; and
    R3, R4, R5 and R6 are defined as in formula (1).


Preferably in formula (1)

    R1 and R2 are selected from 1-methylpropyl; 1,3-dimethylbutyl; 2-methylbutyl; 1,1,3,3-tetra-methylbutyl; 3-methylbutyl; 7-methyloctyl; 2-ethylhexyl; 4-methylcyclohexyl; and 2-methyl-2-propene.


More preferred are compounds of formula (1), wherein

    R3 and R4 are —C≡N.


Also preferred are compounds of formula (1), wherein

    R3 is —C≡N;
    R4 is COR7, COOR7; CONR7R8; or SO2(C6-C12)aryl; and
    R7 and R8 are C1-C4alkyl.


Examples of cyclic merocyanine derivatives according to the present invention are listed in Table 1:








TABLE 1







MC 01






 


MC 02






 


MC 03






 


MC 04






 


MC 05






 


MC 06






 


MC 07






 


MC 08






 


MC 09






 


MC 10






 


MC 11













The preparation of the compounds of formula (1) may be carried out according to known methods of the prior art as described for example in U.S. Pat. No. 4,749,643 on col. 13, line 66-col. 15, line 13 and the references cited therein.




The compounds of formula (1) can be prepared starting from 1-aminocyclohexanone-3 of the formula




which is alkylated with dimethylsulfate or with another alkylating agent like diethylsulfate or methyliodide.

In a second step the reaction mixture is treated with the methylene active compound CH2R3R4 in the presence of a base. The compound of formula (2), the alkylating agent, CH2R3R4 and the base are reacted in approximately equimolar proportions.
Sometimes an excess of the alkylating agent, CH2R3R4 and the base related to the compound of formula (2) are preferred.
The alkylation reaction of the starting compound of formula (2) with a suitable alkylating agent like dimethylsulfate may be carried out without using any solvent on in a suitable solvent, preferably in aliphatic or aromatic solvents like hexane, toluene, benzene or xylene. Protic solvents like methanol, ethanol, iso-butanol, tert-butanol or iso-propanol are also suitable. The reaction may also be carried out in dimethylsulfoxide, N-methylpyrrolidone, dimethylformamide or dimethylacetamide. Ether compounds like diethylether and tetrahydrofurane or halogenated solvents like chloroform or dichloromethane are also suitable solvents as well as mixtures of these solvents.
In the preparation method of the present invention the compound CH2R3R4 is reacted in the presence of an inorganic or organic base. Typical examples of an organic base are amines like triethylamine, Hünig base, DBU (1,8-diazabicyclo[5.4.0]undec-7-ene), DBN (1,5-diazabicyclo[4.3.0]non-5-ene), p-dimethylaminopyridine and N,N,N′,N′-tetramethylguanidine. Suitable bases are also alkoxides (e.g. sodium methoxide, sodium ethoxide, potassium t-butoxide).
Inorganic bases like NaH, LiOH and potassium carbonate are also suitable.
The reaction may be carried out at temperatures between −78° C. and the boiling point of the reaction mixture, preferably from 60 to 120° C.
The compounds of formula (2) can be prepared starting from 1-aminocyclohexanone-3 of the general formula




wherein R7 is hydroxyl, ethoxy, methoxy, chlorine, bromine, fluorine, OTs (Ts is tosyl, —SO2—C6H4—CH3) or OMs (Ms is mesyl, —SO2Me), which are condensed with a secondary amine R1R2NH.

The condensation reactions of the compounds of formula (2) with the compounds of formula (3) may be carried out according to known methods of the prior art as described for example in J. Org. Chem. 1981 (46) on pages 197-201, Synthesis, 1981, on pages 880-881, Acta Chemica Scandinavica, 1970 (24) on pages 2075-2083 or as described in the patent DE-614195 and the references cited therein.
The compounds of formula (2) are preferably prepared by the reaction of a cyclohexane-1,3-dion of formula (4)




with a secondary amine R1R2NH in approximately equimolar proportions. The reaction is preferably carried out in an autoclave. The reaction may be carried out in a suitable solvent, preferably in aliphatic or aromatic solvents like hexane, toluene, benzene or xylene.

Protic solvents like methanol, ethanol, iso-butanol, tert-butanol or iso-propanol are also suitable. The reaction may also be carried out in dimethylsulfoxide, N-methylpyrrolidone, dimethylformamide or dimethylacetamide. Ether compounds like diethylether and tetrahydrofurane or halogenated solvents like chloroform or dichloromethane are also suitable solvents as well as mixtures of these solvents.
The reaction may be carried out at temperatures between 0° C. and 300° C., preferably between 60 to 230° C. and most preferably between 80 and 180° C.
The reaction may be also carried out in the presence of an acidic catalyst. The acidic catalyst may be an inorganic or organic Lewis acid or an inorganic or organic Bronsted acid. Examples for an acidic catalyst may be phosphoric acid, trifluoroacetic acid, oxalic acid, methane sulfonic acid, p-toluene sulfonic acid, trifluoromethane sulfonic acid, benzene sulfonic acid, hydrochloric acid or sulfuric acid. Effectful catalysts are also acid anhydrides like trifluoromethanesulfonic acid anhydride, methanesulfonic acid anhydride, acetic anhydride. Examples for Lewis acids are phosphoryl chloride, CuCl2, ZnCl2, LaCl3, CrCl3, FeCl3, AlCl3, HfCl4, TiCl4, scandium trifluoromethanesulfonate Sc(OTf)3 as well as their hydrates. Acid ion exchangers are also suitable.
The compounds of the formula (1) according to the present invention are particularly suitable as UV filters, i.e. for protecting ultraviolet-sensitive organic materials, in particular the skin and hair of humans and animals, from the harmful effects of UV radiation. These compounds are therefore suitable as sunscreens in cosmetic, pharmaceutical and veterinary medical preparations. These compounds can be used both in dissolved form and in the micronized state.
The UV absorbers according to the present invention are preferably used in the dissolved state (soluble organic filters, solubilized organic filters).
The compounds of the present invention show an excellent solubility behavior in cosmetic oils as listed in the Table 2 below:







TABLE 2







Solubility behaviour [%] of the compounds of the present invention









Solvent















Structure
(Water)
Cyclomethicone
Finsolve TN
Mygliol
Propyleneglycol
Mineral Oil
Polydecene
Jojoba Oil









0.000
0.540
>50
>50
0.766
1.514
0.734
>50


 






0.000
0.509
>5
>5
0.361
0.569
0.367
2.470









The cosmetic formulations or pharmaceutical compositions according to the present invention may additionally contain one or more than one further UV filter as listed in Table 3.







TABLE 3





Suitable UV filter substances which can be additionally used with the UV


absorbers according to the present invention
















DE 10013318
T 1 pp 8-9, all Examples pp 10-13, T 2



pp 13-14, all Examples p 14, Ex A, B, C,



D, E, F pp 19-20


DE 10206562 A1
Ex 1-3 p 10, Ex 4-7 p 11, Ex 8-15 pp 12-14


DE 10238144 A1
Ex on p 3-5;


DE 10331804
T 1 p 4, T 2 + 3 p 5


DE 19704990 A1
Ex 1-2 on pp 6-7;


EP 613 893
Ex 1-5 + 15, T 1, pp 6-8


EP 0 998 900 A1
Ex on pp 4-11


EP 1 000 950
Comp. In Table 1, pp 18-21


EP 1 005 855
T 3, p 13


EP 1 008 586
Ex 1-3, pp 13-15


EP 1 008 593
Ex 1-8, pp 4-5


EP 1 027 883
Compound VII, p 3


EP 1 027 883
Comp I-VI, p 3


EP 1 028 120
Ex 1-5, pp 5-13


EP 1 059 082
Ex 1; T 1, pp 9-11


EP 1 060 734
T 1-3, pp 11-14


EP 1 064 922
Compounds 1-34, pp 6-14


EP 1 077 246 A2
Ex 1-16 on pp 5-11;


EP 1 081 140
Ex 1-9, pp 11-16


EP 1 103 549
Compounds 1-76, pp 39-51


EP 1 108 712
4,5-Dimorph olino-3-hydroxypyridazine


EP 1 123 934
T 3, p 10


EP 1 129 695
Ex 1-7, pp 13-14


EP 1 167 359
Ex 1, p 11 and Ex 2, p 12


EP 1 232 148 B1
Ex 4-17 on pp 3-5;


EP 1 258 481
Ex 1, pp 7, 8


EP 1 310 492 A1
Ex 1-16 on pp 22-30


EP 1 371 654 A1
Ex on pp 5-7


EP 1 380 583 A2
Ex 1, p 6;


EP 1 423 351 A2
Ex 1-16 on pp 31-37;


EP 1 423 371 A1
T 1 on pp 4-8, Ex on p 9, Ex 1-9 on pp



36-42;


EP 1 454 896 A1
Ex 1-5 on pp 10-13, Examples on pp 4-5;


EP 1 471 059 A1
Ex 1-5 on pp 4-5;


EP 1484051 A2
Formula III-VII on pp18-19, Ex 7-14 on



pp 7-9, Ex 18-23 on pp 11-12, Ex 24-40



on pp 14-17;


EP 420 707 B1
Ex 3, p 13 (CAS Reg. No 80142-49-0)


EP 503 338
T 1, pp 9-10


EP 517 103
Ex 3, 4, 9, 10 pp 6-7


EP 517 104
Ex 1, T 1, pp 4-5; Ex 8, T 2, pp 6-8


EP 626 950
all compounds


EP 669 323
Ex 1-3, p 5


EP 743 309 A1
Ex 1-12 on pp 18-24;


EP 780 382
Ex 1-11, pp 5-7


EP 823 418
Ex 1-4, pp 7-8


EP 826 361
T 1, pp 5-6


EP 832 641
Ex 5 + 6 p 7; T 2, p 8


EP 832 642
Ex 22, T 3, pp 10-15; T 4, p 16


EP 852 137
T 2, pp 41-46


EP 858 318
T 1, p 6


EP 863 145
Ex 1-11, pp 12-18


EP 878 469 A1
T 1, pp 5-7;


EP 895 776
Comp. In rows 48-58, p 3; R 25 + 33, p 5


EP 911 020
T 2, pp 11-12


EP 916 335
T 2-4, pp 19-41


EP 924 246
T 2, p 9


EP 933 376
Ex 1-15, pp 10-21


EP 944 624
Ex 1 + 2, pp 13-15


EP 945 125
T 3 a + b, pp 14-15


EP 95 097
Ex 1, p 4


EP 967 200
Ex 2; T 3-5, pp 17-20


EP 969 004
Ex 5, T 1, pp 6-8


FR 2842806 A1
Ex I p 10, Ex II p 12


FR 2861075 A1
Ex 1-3 on pp 12-14;


FR 2862641
Formula 3 on p4; Ex A-J on pp 7-9;


KR 2004025954
all kojyl benzoate derivatives


JP 06135985 A2
Formula 1 on p 2; Ex 1-8 on pp 7-8;


JP 2000319629
CAS Reg Nos. 80142-49-0, 137215-83-9,



307947-82-6


JP 2003081910 A
Ex on p 1;


JP 3686911 B2
All benzylidene-gamma-butyrolactone



derivatives


US 2003/0053966A1
Ex on pp 3-6


US 2004057912 A1
Ex on p 7-9, Ex 1 on p 10;


US 2004057914 A1
Ex on p 8-12, Ex 1 on p 12;


US 2004/0057911A1
Formula I and II on p 1; formula III



and IV on p3; Ex 1-3 on pp 5-6;


US 2004/0071640A1
Ex 1-12 on pp 4-7;


US 2004/0091433A1
Ex 1-6 on pp 14-16;


US 2004/0136931A1
Ex 1-3 on p 7;


US 2004/0258636A1
Ex 1-11 on pp 9-15;


US 2005/0019278A1
Ex 1-9 on pp 6-8;


US 2005/0136012A1
Formula 1 on p 2;


US 2005/0136014A1
Formula a-c on p 2; Examples on p 3;


US 2005/0201957A1
Formula 1 on p1; Ex A, B, C, D, E, F, G



on pp 2-3;


US 2005/0249681A1
all compounds on pp 2-3, Ex 1 on p 6;


U.S. Pat. No. 5,635,343
all compounds on pp 5-10


U.S. Pat. No. 5,332,568
Ex 1, p 5, T 1 + 2, pp 6-8


U.S. Pat. No. 5,338,539
Ex 1-9, pp 3 + 4


U.S. Pat. No. 5,346,691
Ex 40, p 7; T 5, p 8


U.S. Pat. No. 5,801,244
Ex 1-5, pp 6-7


U.S. Pat. No. 6,613,340
Ex I, II pp 9-11, Examples on rows 28-53



p 6


U.S. Pat. No. 6,800,274 B2
Formulas I-VI and IX-XII on pp 14-18;


U.S. Pat. No. 6,890,520 B2
Ex 1-10 on pp 6-9;


U.S. Pat. No. 6,926,887 B2
Ex A on pp5/6; Formulas I-VIII on pp 27-29;


U.S. Pat. No. 6,936,735 B2
Formula 1-2 on p 2; formula 3-4 on p 6;


WO 0149686
Ex 1-5, pp 16-21


WO 0168047
Tables on pp 85-96


WO 0181297
Ex 1-3, pp 9-11


WO 0191695
Formula I on p 4, T on p 8


WO 0202501 A1
Ex Ia-c, p 5


WO 02069926 A1
Ex on p 9, Ex on pp 17-23


WO 02072583
T on pp 68-70


WO 02080876
Ex 1 on pp 7-9


WO 0238537
All compounds p 3, compounds on rows



1-10 p 4


WO 03004557 A1
Ex A1-A29 on pp 36-57;


WO 03007906
Ex I-XXIII, pp 42-48


WO 03086341 A2
Formula 2-21, pp 4-6;


WO 03092643 A1
T on pp 34-35, compounds listed on p 16


WO 03097577 A1
Ex on pp 6-8; Ex 1-3 on pp 15-18;


WO 03104183 A1
Formula I-IV on p 1; Ex 1-5 on pp 27-28;


WO 04000256 A1
Ex 1-10 on pp 18-24


WO 04020398 A1
Ex 1-3 on pp 14-17


WO 04020398 A1
Formulas I-VI on pp 21-24, Formula IX on



p 25;


WO 05009938 A2
Formula I on p 1; Ex 1-2 on pp 14-15;


WO 05065154 A2
Formula a-c on pp 5-6;


WO 05080341 A1
Formula 1 on p 3; Examples on pp 9-13;


WO 9217461
Ex 1-22, pp 10-20


WO 9220690
Polymeric Comp in Examples 3-6


WO 9301164
T 1 + 2, pp 13-22


WO 9714680
Ex 1-3, p 10





(Abbreviations T: Table, R: row, Comp: compound, Ex: compound(s) of Patent Example, p: page; the generic scope of the UV absorbers is described in the left-hand column; specific compounds are indicated in the right-hand column)






The cosmetic or pharmaceutical preparations can be prepared by physically mixing the UV absorber(s) with the adjuvant using customary methods, for example by simply stirring together the individual components, especially by making use of the dissolution properties of already known cosmetic UV absorbers, like octyl methoxy cinnamate, salicylic acid isooctyl ester, etc. The UV absorber can be used, for example, without further treatment, or in the micronised state, or in the form of a powder.
Cosmetic or pharmaceutical preparations contain from 0.05-40% by weight, based on the total weight of the composition, of one UV absorber or UV absorber mixtures.
Preference is given to the use of mixing ratios of the UV absorber of formula (1) according to the present invention and optionally further light-protective agents (as described in Table 2) from 1:99 to 99:1, preferably from 1:95 to 95:1 and most preferably from 10:90 to 90:10, based on weight. Of special interest are mixing ratios of from 20:80 to 80:20, preferably from 40:60 to 60:40 and most preferably approximately 50:50. Such mixtures can be used, inter alia, to improve the solubility or to increase UV absorption.
The UV absorbers of formula (1) according to the present invention or combinations of UV filters are useful to protect skin, hair and/or natural or artificial hair color.
The cosmetic or pharmaceutical preparations may be, for example, creams, gels, lotions, alcoholic and aqueous/alcoholic solutions, emulsions, wax/fat compositions, stick preparations, powders or ointments. In addition to the above mentioned UV filters, the cosmetic or pharmaceutical preparations may contain further adjuvants as described below.
As water- and oil-containing emulsions (e.g. W/O, O/W, O/W/O and W/O/W emulsions or microemulsions) the preparations contain, for example, from 0.1 to 30% by weight, preferably from 0.1 to 15% by weight and especially from 0.5 to 10% by weight, based on the total weight of the composition, of one or more UV absorbers, from 1 to 60% by weight, especially from 5 to 50% by weight and preferably from 10 to 35% by weight, based on the total weight of the composition, of at least one oil component, from 0 to 30% by weight, especially from 1 to 30% by weight und preferably from 4 to 20% by weight, based on the total weight of the composition, of at least one emulsifier, from 10 to 90% by weight, especially from 30 to 90% by weight, based on the total weight of the composition, of water, and from 0 to 88.9% by weight, especially from 1 to 50% by weight, of further cosmetically acceptable adjuvants.
The cosmetic or pharmaceutical compositions/preparations according to the invention may also contain one or one more additional compounds like fatty alcohols Esters of fatty acids, natural or synthetic triglycerides including glyceryl esters and derivatives, pearlescent waxes, hydrocarbon oils, silicones or siloxanes (organosubstituted polysiloxanes), fluorinated or perfluorinated oils, emulsifiers, super-fatting agents, surfactants, consistency regulators/thickeners and rheology modifiers, polymers, biogenic active ingredients, deodorising active ingredients, anti-dandruff agents, antioxidants, hydrotropic agents, preservatives and bacteria-inhibiting agents, perfume oils, colourants, polymeric beads or hollow spheres as SPF enhancers.
Cosmetic or Pharmaceutical Preparations
Cosmetic or pharmaceutical formulations are contained in a wide variety of cosmetic preparations. There come into consideration, for example, especially the following preparations:

    
    
        skin-care preparations, e.g. skin-washing and cleansing preparations in the form of tablet-form or liquid soaps, soapless detergents or washing pastes,
        bath preparations, e.g. liquid (foam baths, milks, shower preparations) or solid bath preparations, e.g. bath cubes and bath salts;
        skin-care preparations, e.g. skin emulsions, multi-emulsions or skin oils;
        cosmetic personal care preparations, e.g. facial make-up in the form of day creams or powder creams, face powder (loose or pressed), rouge or cream make-up, eye-care preparations, e.g. eyeshadow preparations, mascara, eyeliner, eye creams or eye-fix creams; lip-care preparations, e.g. lipsticks, lip gloss, lip contour pencils, nail-care preparations, such as nail varnish, nail varnish removers, nail hardeners or cuticle removers;
        foot-care preparations, e.g. foot baths, foot powders, foot creams or foot balsams, special deodorants and antiperspirants or callus-removing preparations;
        light-protective preparations, such as sun milks, lotions, creams or oils, sunblocks or tropicals, pre-tanning preparations or after-sun preparations;
        skin-tanning preparations, e.g. self-tanning creams;
        depigmenting preparations, e.g. preparations for bleaching the skin or skin-lightening preparations;
        insect-repellents, e.g. insect-repellent oils, lotions, sprays or sticks;
        deodorants, such as deodorant sprays, pump-action sprays, deodorant gels, sticks or roll-ons;
        antiperspirants, e.g. antiperspirant sticks, creams or roll-ons;
        preparations for cleansing and caring for blemished skin, e.g. synthetic detergents (solid or liquid), peeling or scrub preparations or peeling masks;
        hair-removal preparations in chemical form (depilation), e.g. hair-removing powders, liquid hair-removing preparations, cream- or paste-form hair-removing preparations, hair-removing preparations in gel form or aerosol foams;
        shaving preparations, e.g. shaving soap, foaming shaving creams, non-foaming shaving creams, foams and gels, preshave preparations for dry shaving, aftershaves or aftershave lotions;
        fragrance preparations, e.g. fragrances (eau de Cologne, eau de toilette, eau de parfum, parfum de toilette, perfume), perfume oils or perfume creams;
        cosmetic hair-treatment preparations, e.g. hair-washing preparations in the form of shampoos and conditioners, hair-care preparations, e.g. pretreatment preparations, hair tonics, styling creams, styling gels, pomades, hair rinses, treatment packs, intensive hair treatments, hair-structuring preparations, e.g. hair-waving preparations for permanent waves (hot wave, mild wave, cold wave), hair-straightening preparations, liquid hair-setting preparations, hairfoams, hairsprays, bleaching preparations, e.g. hydrogen peroxide solutions, lightening shampoos, bleaching creams, bleaching powders, bleaching pastes or oils, temporary, semi-permanent or permanent hair colourants, preparations containing self-oxidising dyes, or natural hair colourants, such as henna or camomile.

Presentation Forms

    
    


The final formulations listed may exist in a wide variety of presentation forms, for example:

    
    
        in the form of liquid preparations as a W/O, O/W, O/W/O, W/O/W or PIT emulsion and all kinds of microemulsions,
        in the form of a gel,
        in the form of an oil, a cream, milk or lotion,
        in the form of a powder, a lacquer, a tablet or make-up,
        in the form of a stick,
        in the form of a spray (spray with propellent gas or pump-action spray) or an aerosol,
        in the form of a foam, or
        in the form of a paste.
    
    


Of special importance as cosmetic preparations for the skin are light-protective preparations, such as sun milks, lotions, creams, oils, sunblocks or tropicals, pretanning preparations or after-sun preparations, also skin-tanning preparations, for example self-tanning creams. Of particular interest are sun protection creams, sun protection lotions, sun protection milk and sun protection preparations in the form of a spray.
Of special importance as cosmetic preparations for the hair are the above-mentioned preparations for hair treatment, especially hair-washing preparations in the form of shampoos, hair conditioners, hair-care preparations, e.g. pretreatment preparations, hair tonics, styling creams, styling gels, pomades, hair rinses, treatment packs, intensive hair treatments, hair-straightening preparations, liquid hair-setting preparations, hair foams and hairsprays. Of special interest are hair-washing preparations in the form of shampoos.
A shampoo has, for example, the following composition: from 0.01 to 5% by weight of a UV absorber according to the invention, 12.0% by weight of sodium laureth-2-sulfate, 4.0% by weight of cocamidopropyl betaine, 3.0% by weight of sodium chloride, and water ad 100%.
The cosmetic preparation according to the invention is distinguished by excellent protection of human skin against the damaging effect of sunlight.


PREPARATION EXAMPLES
Example 1
Preparation of the Compound of Formula (101)




First Step:

9.25 g (0.08 mole) of cyclohexane-1.3-dion were dissolved in 30 mL toluene. The mixture was cooled down to 0° C. and then 19.71 g (0.08 mole) of bis-2-ethylhexylamine were added under stirring. The mixture was heated at 180° C. for 4 hours in an autoclave. After distilling off the solvent and unreacted amine at 150° C. under 1×10−3 mbar pressure N,N-bis-2-ethylhexylamino-cyclohexene-3-one is obtained as a darkbrownish oil in yields of 74%.
b.p.=180° C. (0.1 mbar).
Second Step:
3.65 g (0.028 mole) of dimethylsulfate are added dropwise to 8.39 g (0.025 mole) of N,N-bis-2-ethylhexylamino-cyclohexene-3-one. The mixture is stirred for 40 minutes at 100° C. After cooling down to 60° C. a mixture of 1.70 g (0.0252 mole) of malononitrile and 2.76 g (0.0271 mole) of triethylamine in 12 ml of isopropanol are added within 10 minutes. The resulting mixture is then heated at approximately 90° C. for 60 minutes. 2-{3-[Bis-(2-ethyl-hexyl)-amino]-cyclohex-2-enylidene}-malononitrile is then isolated by distillation at 230° C. under 0.1 mbar pressure yielding an orange oil (78%).
Application Examples
Example 2
UV-A/UV-B Every Day Protection Lotion O/W















% w/w



INCI-Name
(as supplied)


















Part A
Glyceryl Dilaurate
2.00



Ethylhexyl Palmitate
6.00



Cetyl Alcohol
1.00



Glyceryl Stearate
2.00



Laureth-23
1.00



Isopropyl Palmitate
2.00



Tribehenin
0.80



Beeswax
1.50



Lanolin Oil
1.00


Part B
Water
qs to 100



Propylene Glycol
4.00



Water (and) Titanium Dioxide (and) Alumina
4.00



(and) Sodium Metaphosphate (and)



Phenoxyethanol (and) Sodium Methylparaben


Part C
Steareth-10 Allyl Ether/Acrylates Copolymer
1.00


Part D
Phenoxyethanol (and) Methylparaben (and)
1.00



Ethylparaben (and) Butylparaben (and)



Propylparaben (and) Isobutylparaben



UV-absorber of formula (101)
8.00


Part E
Water (and) Sodium Hydroxide
qs









Manufacturing Instruction:

Part A and part B are heated separately up to 80° C. Part A is poured into part B while stirring and homogenized with an Ultra Turrax by 11000 rpm for 30 sec. After cooling down to 60° C. part C is incorporated. At 40° C. part D is added slowly under continuous stirring. The pH is adjusted with part E between 6.50-7.00.
Example 3
UVA/UVB Sun Protection Lotion, O/W Type















% w/w



INCI-Name
(as supplied)


















Part A
Potassium Cetyl Phosphate
2.00



Tricontanyl PVP
1.00



Caprylic/Capric Triglyceride
5.00



C12-15 Alkyl Benzoate
5.00



Cetearyl Isononanoate
5.00



Glyceryl Stearate
3.00



Cetyl Alcohol
1.00



Dimethicone
0.10



Ethylhexyl Methoxycinnamate
5.00


Part B
Water
qs to 100



Glycerin
3.00


Part C
Steareth-10 Allyl Ether/Acrylates Copolymer
0.50


Part D
UV-absorber of formula (101)
8.00


Part E
Phenoxyethanol (and) Methylparaben
1.00



(and) Ethylparaben (and) Butylparaben (and)



Propylparaben (and) Isobutylparaben


Part F
Water (and) Sodium Hydroxide
qs to pH 7.00


Part G
Fragrance
qs









Manufacturing Instruction:

Part A and part B are heated separately up to 80° C. Part B is poured into part A under moderate stirring. The mixture is homogenized with an Ultra Turrax at 11000 rpm for minute. After cooling down to 70° C. part C is added under stirring. After cooling further down to 50° C. part D is incorporated very slowly. At 40° C. part E is added. At room temperature the pH is adjusted with part F to 7.00 and part G is added.

Example 4
UVA/UVB Sun Protection Lotion, O/W Type















% w/w



INCI-Name
(as supplied)


















Part A
Potassium Cetyl Phosphate
2.00



Tricontanyl PVP
1.00



Caprylic/Capric Triglyceride
5.00



C12-15 Alkyl Benzoate
5.00



Cetearyl Isononanoate
5.00



Glyceryl Stearate
3.00



Cetyl Alcohol
1.00



Dimethicone
0.10



Ethylhexyl Methoxycinnamate
5.00


Part B
Water
qs to 100



Glycerin
3.00


Part C
Steareth-10 Allyl Ether/Acrylates Copolymer
0.50


Part D
UV-absorber of formula (101)
20.00 


Part E
Phenoxyethanol (and) Methylparaben
1.00



(and) Ethylparaben (and) Butylparaben (and)



Propylparaben (and) Isobutylparaben


Part F
Water (and) Sodium Hydroxide
qs to pH 7.00


Part G
Fragrance
qs









Manufacturing Instruction:

Part A and part B are heated separately up to 80° C. Part B is poured into part A under moderate stirring. The mixture is homogenized with an Ultra Turrax at 11000 rpm for minute. After cooling down to 70° C. add part C is added under stirring. After cooling further down to 50° C. part D is incorporated very slowly. At 40° C. part E is added. At room temperature the pH is adjusted with part F to 7.00 and part G is added.
Example 5
W/O Sunscreen Lotion















% w/w



INCI-Name
(as supplied)




















Part A
PEG-7 Hydrogenated Castor Oil
3.00




Polyglyceryl-3 Diisostearate
4.00




Microcrystalline Wax
1.00




Magnesium Stearate
1.50




Propylparaben
0.10




Mineral Oil
15.00 




Octyldodecanol
8.00




Ethylhexyl Triazone
1.00




Ethylhexyl Methoxycinnamate
2.00



Part B
Water
qs to 100




Water (and) Citric Acid
0.05




Methylparaben
0.15




Magnesium Sulfate
0.50



Part C
UV-absorber of formula (101)
9.00




Fragrance
qs










Manufacturing Instruction:

Part A is heated to 80° C. whilst stirring. Part B is added into part A and homogenized with an Ultra Turrax at 11 000 rpm for one minute. After cooling down to 30° C. part C is incorporated.
Example 6
Skin Protection Sunscreen Lotion W/O















% w/w



INCI-Name
(as supplied)




















Part A
Polyglyceryl-2 Dipolyhydroxystearate
3.00




Glyceryl Oleate
3.00




Cetearyl Isononanoate
7.00




Hexyl Laurate
6.00




Dicaprylyl Ether
6.00




Propylparaben
0.10




Hexyldecanol
3.00




Magnesium Stearate
1.00




Beeswax
1.00




Ethylhexyl Methoxycinnamate
4.00



Part B
Water
qs to 100




Methylparaben
0.15




Magnesium Sulfate
1.00



Part C
UV-absorber of formula (101)
6.00










Manufacturing Instruction:

Part A is heated separately to 80° C. under gentle stirring. Part B is added to part A and homogenized for one minute at 11000 rpm. After cooling down to 30° C. part C is added under continuous stirring.
Example 7
O/W Emulsion















% w/w



INCI-Name
(as supplied)





















Part A
UV-absorber of formula (101)
3
g




sesame oil
10
g




glyceryl stearate
4
g




stearic acid
1
g




cetyl alcohol
0.5
g




polysorbate 20
0.2
g



Part B
propylene glycol
4
g




propylparaben
0.05
g




methylparaben
0.15
g




triethanolamine
0.1
g




carbomer 934
0.1
g




water
ad 100
ml










Preparation of the Emulsion

Phase (A):

Firstly, the UV absorber is dissolved in sesame oil. The other components of (A) are added thereto and combined.
Phase (B):
Propylparaben and methylparaben are dissolved in propylene glycol. 60 ml of water are then added, heating to 70° C. is carried out and then carbomer 934 is emulsified therein.
Emulsion:
(A) is slowly added to (B) with vigorous application of mechanical energy. The volume is adjusted to 100 ml by the addition of water.
Example 8
Daily Care Cream, Type O/W















% w/w



INCI name
(as used)


















Part A
Glyceryl stearate (and) cetearyl alcohol (and)
4.0



cetyl palmitate (and) cocoglycerides



Ceteareth-12
4.0



Cetearyl alcohol
2.0



Dicaprylyl ether
4.5



Ethylhexyl stearate
4.0



Hexyl laurate
3.5



Ethylhexyl triazone
1.0



Benzylidene malonate polysiloxane
2.0



HDI/trimethylol hexyl-lactone crosspolymer
5.0



(and) silica



Stearyl dimethicone
1.0



Dimethicone
2.0



Cetyl alcohol
0.8



UV-absorber of formula (101)
2.0


Part B
Water
q.s. to 100



Water (and) scleroglucan (and) phenoxyethanol
2.0



Glycerol
2.0


Part C
Steareth-10 allyl ether/acrylate copolymer
 0.45



Phenoxyethanol (and) methylparaben (and)
0.7



ethylparaben (and) butylparaben (and)



propylparaben (and) isobutylparaben


Part D
Aqua (and) tocopheryl acetate (and) caprylic/
4.0



capric triglyceride (and) polysorbate 80



(and) lecithin


Part E
Water (and) sodium hydroxide
q.s.



Fragrance
q.s.









Preparation Procedure:

Part A and part B are heated separately to 80° C. Part A is poured into part B, whilst stirring continuously. Afterwards the mixture is homogenized with an Ultra Turrax at 11 000 rpm for 20 sec. The mixture is cooled to 60° C. and part C is added. At a temperature below 30° C., part D is added and the pH value is adjusted with sodium hydroxide to between 6.5 and 7.0. Finally, fragrance is added.
Example 9
Sun-Protection Cream, Type O/W















% w/w



INCI name
(as used)


















Part A
Polyglyceryl-3 methylglucose distearate
2.0



Decyl oleate
5.7



Isopropyl palmitate
5.8



Caprylic/capric triglyceride
6.5



UV-absorber of formula (101)
2.0



Ethylhexyl methoxycinnamate
5.0



Cetyl alcohol
0.7


Part B
Glycerol
3.0



Carbomer
0.3



Water
q.s. to 100


Part C
Phenoxyethanol (and) methylparaben (and)
0.5



ethylparaben (and) butylparaben (and)



propylparaben (and) isobutylparaben


Part D
Methylene bis-benzotriazolyl
8.0



tetramethylbutylphenol (and) aqua (and)



decyl glucoside (and) propylene glycol



(and) xanthan gum



Water
20.0 


Part E
Water (and) sodium hydroxide
q.s.



Fragrance
q.s.









Preparation Procedure

Part A and part B are heated separately to 75° C. Part A is poured into part B whilst stirring. The mixture is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. The mixture is cooled to 60° C. and part C and part D are incorporated. The mixture is homogenised again for a short time (5 sec./11 000 rpm) and further cooled, with moderate stirring. At room temperature, the pH is adjusted with sodium hydroxide solution to between 5.5 and 6.0. Finally, fragrance is added.
Example 10
Daily Care UV-Protection Lotion















% w/w



INCI name
(as used)


















Part A
Oleth-3 phosphate
0.6



Steareth-21
2.5



Steareth-2
1.0



Cetyl alcohol
0.8



Stearyl alcohol
1.5



Tribehenin
0.8



Isohexadecane
8.0



UV-absorber of formula (101)
5.0


Part B
Water
q.s. to 100



Glycerol
2.0



Methylene bis-benzotriazolyl tetramethylbutylphenol
3.0



(and) aqua (and) decyl glucoside (and) propylene



glycol (and) xanthan gum



Disodium EDTA
0.1


Part C
Water
20.0 



Diazolidinyl urea (and) iodopropynyl
 0.15



butylcarbamate



Propylene glycol
4.0


Part D
Sodium acrylate copolymer (and) liquid
1.5



paraffin (and) PPG-1 trideceth-6



Cyclopentasiloxane
4.5



PEG-12 dimethicone
2.0



Tocopheryl acetate
 0.45



Water (and) citric acid
q.s.


Part E
Fragrance
q.s.









Preparation Procedure

Heat part A and part B separately to 75° C. Pour part A into part B, whilst stirring continuously. Immediately after emulsification, incorporate in the mixture SF 1202 and SF 1288 from part D. Afterwards homogenise with an Ultra Turrax at 11 000 rpm for 30 sec. Allow to cool to 65° C. and incorporate SALCARE® SC91. At a temperature below 50° C., add part C. At 35° C. or below, incorporate vitamin E acetate and subsequently adjust the pH with citric acid. At room temperature, add part E.
Example 11
Sun-Protection Cream, Type O/W















% w/w



INCI name
(as used)


















Part A
Polyglyceryl-3 methylglucose distearate
2.0



Decyl oleate
5.7



Isopropyl palmitate
5.8



Caprylic/capric triglyceride
6.5



UV-absorber of formula (101)
2.0



Ethylhexyl methoxycinnamate
5.0



Cetyl alcohol
0.7


Part B
Glycerol
3.0



Carbomer
0.3



Water
q.s. to 100


Part C
Phenoxyethanol (and) methylparaben (and)
0.5



ethylparaben (and) butylparaben (and)



propylparaben (and) isobutylparaben


Part D
Methylene bis-benzotriazolyl tetramethylbutylphenol
8.0



(and) aqua (and) decyl glucoside (and) propylene



glycol (and) xanthan gum



Water
20.0 


Part E
Water (and) sodium hydroxide
q.s.



Fragrance
q.s.









Preparation Procedure:

Part A and part B are heated separately to 75° C. Part A is poured into part B whilst stirring. The mixture is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. The mixture is cooled to 60° C., and part C and part D are incorporated. The mixture is homogenised again for a short time (5 sec./11 000 rpm). After further cooling, with moderate stirring, the pH is adjusted with sodium hydroxide at room temperature. A solution between pH 5.50 and 6.00 is obtained. Finally, fragrance is added.
Example 12
Sun-Protection Cream, Type O/W















% w/w



INCI name
(as used)


















Part A
Polyglyceryl-3 methylglucose distearate
2.0



Decyl oleate
5.7



Isopropyl palmitate
5.8



Caprylic/capric triglyceride
6.5



Mixture of the compound of UV-absorber of
2.0



formula (101) (50%) and Uvinul A Plus CAS



Reg. No. 302776-68-7 (50%)



Ethylhexyl methoxycinnamate
5.0



Cetyl alcohol
0.7


Part B
Glycerol
3.0



Carbomer
0.3



Water
q.s. to 100


Part C
Phenoxyethanol (and) methylparaben (and)
0.5



ethylparaben (and) butylparaben (and)



propylparaben (and) isobutylparaben


Part D
Methylene bis-benzotriazolyl tetramethylbutylphenol
8.0



(and) aqua (and) decyl glucoside (and) propylene



glycol (and) xanthan gum



Water
20.0 


Part E
Water (and) sodium hydroxide
q.s.



Fragrance
q.s.









Preparation Procedure:

Part A and part B are heated separately to 75° C. Part A is poured into part B whilst stirring. The mixture is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. After cooling 60° C., part C and part D are incorporated. The mixture is homogenised again for a short time (5 sec./11 000 rpm). After further cooling, with moderate stirring, the pH is adjusted at room temperature with sodium hydroxide solution to between 5.50 and 6.00. Finally, fragrance is added.
Example 13
Sun-Protection Cream, Type O/W















% w/w



INCI name
(as used)


















Part A
Polyglyceryl-3 methylglucose distearate
2.0



Decyl oleate
5.7



Isopropyl palmitate
5.8



Caprylic/capric triglyceride
6.5



Mixture of UV-absorber of formula (101) (50%)
2.0



and benzylidene camphor, CAS Reg. No.



36861-47-9 (50%)



Ethylhexyl methoxycinnamate
5.0



Cetyl alcohol
0.7


Part B
Glycerol
3.0



Carbomer
0.3



Water
q.s. to 100


Part C
Phenoxyethanol (and) methylparaben (and)
0.5



ethylparaben (and) butylparaben (and)



propylparaben (and) isobutylparaben


Part D
Methylene bis-benzotriazolyl tetramethylbutylphenol
8.0



(and) aqua (and) decyl glucoside (and) propylene



glycol (and) xanthan gum



Water
20.0 


Part E
Water (and) sodium hydroxide
q.s.



Fragrance
q.s.









Preparation Procedure

Part A and part B are heated separately to 75° C. Part A is poured into part B whilst stirring. The mixture is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. After cooling to 60° C., part C and part D are incorporated. The mixture is homogenised again for a short time (5 sec./11 000 rpm). After further cooling, with moderate stirring, the pH is adjusted at room temperature with sodium hydroxide. A solution between pH 5.50 and 6.00 is obtained. Finally, fragrance is added.

## Claims

1. A compound of formula



R1 and R2 independently from each other are branched C4-C22alkyl; or branched C4-C12alkenyl;
R3 and R4 are cyano; and
R5 and R6 independently from each other are hydrogen; C1-C6alkyl; or
C5-C8cycloalkyl which may be substituted by one or more than one C1-C4alkyl.

2. A compound according to claim 1, wherein in formula (1)
R1 and R2 are identical; and
R3, R4, R5, and R6 are as defined in claim 1.

3. A compound according to claim 1, wherein in formula (1)
R1 and R2 are selected from the group consisting of 1-methylpropyl; 1,3-dimethylbutyl; 2-methylbutyl; 1,1,3,3-tetramethylbutyl; 3-methylbutyl; 7-methyloctyl; 2-ethylhexyl; 4-methylcyclohexyl; and 2-methyl-2-propene.

4. A method for the protection of human hair and skin against the damaging effect of UV radiation wherein said method comprises applying to said hair and skin an effective amount of a compound of formula (1) according to claim 1.

5. A cosmetic preparation comprising at least one compound of formula (1) according to claim 1 together with cosmetically tolerable carriers or adjuvants.