Abstract:
The invention discloses perfume compositions containing one or more phenylethynyl carbinol compounds along with conventional perfume ingredients. The phenylethynyl carbinol compounds have the formula: ##STR1## wherein R 1  and R 2  is the same or different lower alkyl.

Description:
FIELD OF THE INVENTION 
     This invention is concerned with the production of novel perfumes and perfumed articles containing phenylethynyl carbinol compounds. 
     BACKGROUND OF THE INVENTION 
     There is a continual search for new and inexpensive chemicals which can be utilized to modify, enhance, or otherwise improve the organoleptic properties of consumable products. 
     Although many acetylenic compounds are found naturally, the use of this class of compounds in perfumery has been limited. Arctander in &#34;Perfume and Flavor Chemicals&#34;, 1969, describes the ester methyl 2-nonynoate, commonly known as &#34;methyl heptine carbonate&#34;, as well as related acetylenes. U.S. Pat. No. 3,268,594 discloses compounds having the structure: 
     
         CH.sub.3 (CH.sub.2).sub.n C.tbd.CCH(OCH.sub.3).sub.2 
    
     which are useful as perfumery ingredients. 
     SUMMARY OF THE INVENTION 
     The present invention provides for perfume compositions having new and improved organoleptic properties. 
     Accordingly, it is an object of the invention to provide novel perfume compositions and perfumed articles which incorporate one or more phenylethynyl carbinol compounds into their fragrance formulas. Broadly, this invention provides for a perfume composition comprising: 
     a. one or more phenylethynyl carbinols having the structure: ##STR2## wherein R 1  and R 2  is the same or different lower alkyl in an amount sufficient to impart fragrance thereto; and 
     b. conventional perfume ingredients. 
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention provides for the production of novel perfumes and perfumed articles through the use of sufficient amounts of one or more of the phenylethynyl carbinols having the general formula presented hereinabove. Alkyl groups suitable for use in this invention perferably contain from 1 to 6 carbon atoms, most preferably from 1 to 4 carbon atoms. The alkyl groups may be straight chained or branched, cyclic or acyclic. The alkyls are perferably methyl, ethyl and isopropyl. The phenylethynyl carbinols preferably contain between 11 and about 16 carbon atoms. 
     Table I hereinafter illustrates some preferred compounds of Formula I which are characterized by odor notes. 
     
         ______________________________________EXAMPLES OF COMPOUNDS OF FORMULA I______________________________________3-Methyl-1-phenyl-1-butyn-3-ol                   green, floral ##STR3##3-Methyl-1-phenyl-1-pentyn-3-ol                   rosey, floral                   muguet-like ##STR4##3-Ethyl-1-phenyl-1-pentyn-3-ol                   fresh, rosey ##STR5##3,4-Dimethyl-phenyl-1-pentyn-3-ol                   sweet, floral                   slightly rosey ##STR6##______________________________________ 
    
     Compounds of the present invention may be prepared in accordance with known technology by reacting phenylacetylene with the appropriate ketone as illustrated in accompanying Scheme I. ##STR7## Such procedures are reported by Smissman et al., in the Journal of the American Chemical Society, Vol. 78, pp. 3395-3400 (1956) and are incorporated here by reference. 
     The phenylethynyl carbinols of the present invention have been found to possess distinctive green, floral, rosey, muguet, slightly balsamic odors which render them useful in fine fragrances as well as perfumed products such as soaps, detergents, deodorants, cosmetic preparations and the like. 
     One or more of the phenylethynyl carbinols of this invention and auxiliary perfume ingredients, for example, alcohols, aldehydes, ketones, nitriles, esters and essential oils, may be admixed so that the combined odors of the individual components produce a desired fragrance. Such perfume compositions are carefully balanced, harmonious blends of essential oils, aroma chemicals, resinoids and other extracts of natural odorous materials. Each perfume ingredient imparts its own characteristic effect to the composition. Thus, one or more of the phenylethynyl carbinols of the invention can be employed to impart novel characteristics into fragrance compositions. 
     Such perfume compositions may contain between about 0.001 and about 80 weight percent of any one or more of the phenylethynyl carbinols of this invention. Ordinarily, at least about 0.001 weight percent of the phenylethynyl carbinol is required to impart significant odor characteristics. Amounts of phenylethynyl compounds in the range of from about 1 to about 60 weight percent are preferred. The phenylethynyl carbinols of this invention may be formulated into concentrates containing from about 1 to about 60 weight percent of the compound in an appropriate solvent. Such concentrates are then employed to formulate products such as colognes, soaps, etc., wherein the concentration of the compounds of this invention can be in the range of from about 0.001 to 7 weight percent, depending upon the final product. For example, the concentration of the compounds of this invention will be of the order of about 0.001 to about 0.1 weight percent in detergents, and of the order of about 0.1 to about 7 weight percent in perfumes and colognes. 
     The phenylethynyl carbinols of this invention are useful as olfactory components of perfume compositions for detergents and soaps, space odorants and deodorants, perfumes, colognes, toilet water, bath preparations such as bath oils and bath solids, hair preparations such as lacquers, brilliantines, pomades and shampoos, cosmetic preparations such as creams, deodorants, hand lotions and sunscreens, powders such as talcs, dusting powders and face powders, and the like. 
     The following examples are set forth herein to illustrate the preferred method of synthesis of the compounds of this invention. In addition, examples are included which demonstrate their use in fragrance compositions. These examples are intended only to illustrate the preferred embodiments of this invention and are in no way meant to limit the scope thereof. 
    
    
     EXAMPLE 1 
     Preparation of 3-Methyl-1-phenyl-1-pentyn-3-ol 
     Phenylacetylene (500 g, 4.2 mol) was added to a mixture of potassium hydroxide flake (290 g) and toluene (3 L). 2-Butanone (425 g, 5.9 mol) was added over 45 minutes keeping the temperature below 30° C. with periodic cooling and the resulting mixture agitated for 20 h at room temperature. Water (1 L) was added, the toluene solution washed until neutral, the solvent evaporated, and the residue distilled to give 517 g (71% yield) of 3-methyl-1-phenyl-1-pentyn-3-ol; bp 107°-110° C./3 mm; IR (film) 3400, 1150, 1000, 920 cm -1  ; NMR (CDCl 3 ) 1.1 (3H, t), 1.6 (3H, s), 1.8 (2H, q), 2.2 (1H, s), 7.2-7.6 (5.H, m) δ; MS (m/e) 174, 156, 145, 43. 
     EXAMPLE 2 
     Preparation of 3-Methyl-1-phenyl-1-butyn-3-ol 
     The procedure outlined in Example 1 was followed using acetone and resulted in the isolation of 403 g (60% yield) of 3-methyl-1-phenyl-1-butyn-3-ol: bp 101° C./3 mm [mp 52°-53° C./from hexane]; IR (film) 3400, 1150, 960, 910 cm -1  ; NMR (CDCl 3 ) 1.6 (6H, s), 2.2 (1H, s), 7.2-7.5 (5H, m) δ; MS (m/e) 160, 142, 145, 43. 
     EXAMPLE 3 
     Preparation of 3-Ethyl-1-phenyl-1-pentyn-3-ol 
     The procedure outlined in Example 1 was followed using 3-pentanone and resulted in the isolation of 568 g (72% yield) of 3-ethyl-1-phenyl-1-pentyn-3-ol: bp 117°-118° C./3 mm; IR (film) 3400, 1310, 1130, 950 cm -1  ; NMR (CDCl 3 ) 1.1 (6H, t), 1.8 (4H, q), 2.1 (1H, s), 7.2-7.6 (5H, m) δ; MS (m/e) 188, 160, 159, 57. 
     EXAMPLE 4 
     Preparation of 3,4-Dimethyl-1-phenyl-1-pentyn-3-ol 
     The procedure outlined in Example 1 was followed using 3-methyl-2-butanone and resulted in the isolation of 458 g (58% yield) of 3,4-dimethyl-1-phenyl-1-pentyn-3-ol: bp 113°-115° C./3 mm; IR (film) 3400, 1100, 1060, 910 cm -1  ; NMR (CDCl 3 ) 1.1 (6H, 2d), 1.5 (3H, s) 1.6-2.0 (1H, m), 2.2 (1H, s), 7.2-7.6 (5H, m) δ; MS (m/e) 188, 160, 145, 43. 
     EXAMPLE 5 
     The following illustrates the use of the phenylethynyl carbinols in a perfume composition of the muguet type. 
     
         ______________________________________BASE COMPOSITIONComponent        Parts by weight______________________________________cis-3-Hexenol    1.0Tonalide         3.0Indole (10% in DEP)            3.0Citral quenched  5.0Alpha Ionone     7.0Nerolidol        8.0Citronellyl formate            8.5Geranyl acetate  9.5Citronellyl propionate            20.0Jasmin absolute B            25.0Linalool synthetic            45.0Terpineol        65.0Phenylethyl alcohol            70.0Hydroxycitronellal            100.0Benzyl alcohol   200.0            570.0______________________________________ 
    
     
         ______________________________________MODIFYING INGREDIENTS            Parts by weightComponent          A      B       C    D______________________________________Geraniol           200    --      --   --Laevo citronellol  230    --      --   --3-Methyl-1-phenyl-1-pentyn-3-ol              --     430     --   --3-Ethyl-1-phenyl-1-pentyn-3-ol              --     --      400  --3,4-Dimethyl-1-phenyl-1-pentyn-3-ol              --     --      --   370Diethyl phthalate  --     --      30    60Base               570    570     570  570              1000   1000    1000 1000______________________________________ 
    
     When varying amounts of the phenylethynyl carbinols (formulations B, C and D) were mixed with the base as indicated, the character of the finished products was more rounded and esthetic as evaluated in both the freshly blottered and on dry out, than compositions A with the rose alcohols normally used. 
     EXAMPLE 6 
     The following illustrates the use of several phenylethynyl carbinols in the preparation of a substitute Rose absolute. 
     
         ______________________________________BASE COMPOSITIONComponent              Parts by weight______________________________________Phenylacetic acid      2Rosetone               4Benzyl isoeugenol      10Oakmoss absolute       4Dimethylbenzylcarbinyl acetate                  20Guaiacwood acetate     20Honey base             10Undecylenic alcohol    2Aldehyde C.sub.9 (10% in DEP)                  15Aldehyde undecylenic (10% in DEP)                  20Alcohol C.sub.9        2Mimosa absolute        2Oil Chamomile blue     1Methyl octine carbonate (1% in DEP)                  10Penylacetaldehyde dimethyl acetal                  9Costus                 5Isobutylphenyl acetate 12Alpha Irisone white extra                  25Oil Geranium bourbon   19Oil Ceranium Maroc selection                  40Phenylethyl acetate    12Citronellyl formate    40Dibutylsulfide (1% in DEP)                  4Geranyl acetate        50Phenylethyl alcohol    902-trans-6-cis-Nonadienal (5% in DEP)                  2                  430______________________________________ 
    
     
         ______________________________________MODIFYING INGREDIENTS         Parts by weightComponent         A      B      C    D    E______________________________________Geraniol ex Palmarosa              270   --     --   --   --Laevo citronellol  300   --     --   --   --3-Methyl-1-phenyl-1-             --      570   --   --   --pentyn-3-ol3-Ethyl-1-phenyl-1-             --     --      530 --   --pentyn-3-ol3,4-Dimethyl-1-phenyl-1-             --     --     --    500 --pentyn-3-ol3-Methyl-1-phenyl-1-             --     --     --   --    570butyn-3-olDiethyl phthalate --     --      40   70  --Base              430    430    430  430  430             1000   1000   1000 1000 1000______________________________________ 
    
     When the rose absolute is made up with the varying amounts of phenylethynyl carbinols as indicated above (formulations B, C, D and E), the characteristics of the finished products are more esthetic and better balanced than the one made with the rose alcohols (example A) normally used.