Disubstituted cycloalkanones as fragrance materials

Perfume compositions – Perfume compositions – Ring containing active ingredient

Reexamination Certificate

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Details

C424S070100, C510S101000, C512S015000

Reexamination Certificate

active

06548474

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to disubstituted cycloalkanones for use as fragrance materials. More particularly, the present invention relates to disubstituted cycloalkanones of the following general formula (I) or (II):
wherein R
1
is a straight-chain or branched saturated or unsaturated hydrocarbon group having between 1 and 6 carbon atoms, and m and n are each either 1 or 2.
Disubstituted cycloalkanones are prepared by alkylation of cycloalkylidenecycloalkanones (Qi et al., Hecheng Huaxue 4(4):296-299 (1996)). Disubstituted cycloalkanones are of interest as potential antiinflammatory compounds and anticancer compounds. Qi et al. synthesized 2-(1-cyclopentenyl)-2-alkylcyclopentanone Mannich base hydrochlorides, and performed studies on their anticancer and antiinflammatory properties (Zhongguo Yaowu Juaxue Zazhi 5(4):235-42 (1995)). They showed that some species had significant antitumor activity against cultured cancer cell lines, and others showed significant antiinflammatory activity comparable to that of indomethacin. In a separate work, the same authors synthesized &agr;,&bgr;-unsaturated and &bgr;-aminomethylcyclopentanones containing &agr;-(1-cyclopentenyl) and showed these compounds exhibited significant levels of anticancer activity in vitro against cultured cancer cell lines (Chin. Chem. Lett. 6(10):847-850 (1995)).
Various monosubstituted cycloalkanones have been investigated for use as fragrances. In particular, 2-cyclohexylcyclohexanone (reviewed in Food Cosmet. Toxicol. 12(3):399 (1974)) and 2-cyclopentenones (Ger. Offen. DE 83-3338853) have been prepared for use as fragrances. In addition, 2-cyclopentylcyclopentanone was used in preparation of a dentrifice, a soap, and a fragrance or flavoring composition giving a jasmine-like smell (European Patent EP 16650 801001). Furthermore, Japanese Patent Publication JP 82-230558 discloses the use of &dgr;-cyclopentyl-&dgr;-lactone in perfume preparations.
Mekhtiev et al. studied the structure/odor relationships among selected monosubstituted cycloalkanones (Dokl. Akad. Nauk Az. SSR 32(12):46-52 (1976)). They concluded that introduction of an n-alkyl group at the &agr;-position in a cyclopentanone ring caused a fatty odor increasing in intensity from methyl to propyl, and a strong jasmine scent for C4 to C7 groups. Cyclohexanone derivatives had a weaker jasmine scent than their cyclopentanone analogs. Branched amyl- and hexylcyclopentanones with geminal terminal methyl groups also gave a jasmine scent, with strong fruity or woody overtones. Substitution of a methyl or ethyl group at the &agr;′-position of the cyclopentanone ring carrying an n-alkyl group weakened the jasmine scent, and increased the fruity tones.
While monosubstituted and disubstituted cycloalkanones are known in the art, the use of di substituted cycloalkanones as fragrance materials has not been investigated. More particularly, the use of disubstituted cycloalkanones as fragrance materials for consumer products has not been investigated.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of the present invention to provide disubstituted cycloalkanones for use as fragrance material.
It is another object of the present invention to provide disubstituted cycloalkanones suitable for use as fragrance materials in commercial consumer products, such as cleaning materials, perfumes, and personal hygiene products.
Briefly stated, di substituted cycloalkanones are prepared from one of 2-cyclopentylidenecyclopentan-1-one, 2-cyclohexylidenecyclohexan-1-one, 2-cyclopentylidenecyclohexan-1-one, or 2-cyclohexylidenecyclopentan-1-one. The resulting compounds were analyzed for their odor characteristics. The different compounds exhibit varied odor characteristics, which are not predictable from the structures of the compounds. The compounds are useful in the preparation of fragrance compositions suitable for use in consumer products.
According to an embodiment of the present invention, a fragrance composition consisting of a disubstituted cycloalkanone of the following general formula (I) or (II):
wherein R
1
is a member selected from the group consisting of a straight-chain saturated hydrocarbon group, a branched saturated hydrocarbon group, a straight-chain unsaturated hydrocarbon group, and a branched unsaturated hydrocarbon group, and wherein R
1
has between 1 and 6 carbon atoms, and wherein m and n are each either 1 or 2.
The above, and other objects, features and advantages of the present invention will become apparent from the following description read in conjunction with the accompanying drawing.


REFERENCES:
patent: 3342186 (1967-09-01), Cook
patent: 3338853 (1984-05-01), None
patent: 0 016 650 (1980-01-01), None
patent: 0504592 (1992-09-01), None
patent: 0770671 (1997-05-01), None
patent: 2351078 (1977-12-01), None
patent: 6080606 (1994-03-01), None
patent: 9205713 (1992-04-01), None
“Synthesis of a Potential Steroid Intermediate by Anionic Oxy-Cope Rearrangement”, Tetrahedron Letters, vol. 30, No. 33 pp. 4427-4428, 1989.*
“Synthesis of Linearly Fused Tricyclic Compounds Via Thermal Oxy-Cope Rearrangement”, Tetrahedron, vol. 52, No. 2, pp. 7737-7744, 1996.*
Qi et al., “Alkylation of 2-cyclopentylidenecyclopentanone”,Hecheng Huaxue, 4(4):296-299 (1996). (in Chinese).
Qi et al., “Synthesis of 2-(1-cyclopentenyl)-2-alkylcyclopentanone Mannich base hydrochlorides and studies on their anticancer and antiinflammatory activities”,Zhongguo Yaowu Huaxue Zazhi, 5(4):235-41 (1995). (In Chinese).
Qi et al., “Synthesis and potential antineoplastic activity of &agr;&phgr;(1-cyclopentenyl)cyclopentanone derivatives—a new family of anticancer agents”,Chin. Chem. Lett.6(10):847-50 (1995).
Koppes et al., “Photochemistry of &bgr;,&phgr;enones. 9. Mechanistic photochemical studies on the 1,3 acyl shift and oxa-di-&pgr;&phgr;methane rearrangement of two &bgr;,&ggr;,&ggr;,&dgr;-dienones”,Neth. Recl. Trav. Chim. Pays-Bas, 104(10):272-6 (1985).
Van der Veen et al., “Photochemistry of &bgr;,&ggr;&phgr;enones—VIII. On the remarkable photostability of some &bgr;,&ggr;,&bgr;,&ggr;-dienones and the 1,3-acyl shift photoreactivity of two &bgr;,&ggr;&bgr;,&ggr;-dienones”,Neth. Tetrahedron41(3):585-94 (1985).
Buys et al., “Photochemistry of &agr;&phgr;oxo oxime ethers. 8 Steric control in the photochemical E-Z isomerization of some (over)crowded &agr;&phgr;oxo oxime ethers”,Neth. Recl. Trav. Chim. Pays-Bas104(1):19-24 (1985).
Van der Veen et al., “Temperature-dependent alkylation of &ggr;&phgr;pheny &bgr;, &ggr;&phgr;unsaturated acid and ester systems in hexamethyl-phosphoric triamide-tetrahydrofuran solutions using lithium diisopropylamide”,Neth. J. Org. Chem50(3):342-6 (1985).
Coffin et al., “Photochemical studies on the mechanism of the oxadi-&pgr;&phgr;methane rearrangement. An example of a stereospecific rearrangement”,J. Amer. Chem. Soc.101(12):3261-72 (1979).
Bakuzis et al., “Acid-catalyzed ketone rearrangements. Synthesis of decalins and spiro[4,5]decanes”,J. Org. Chem.39(16):2427-9 (1974).
Carlson et al., “Synthetic organic photochemistry. Photochemical approach to hydroazulenes by photolysis of a &bgr;,&ggr;&phgr;unsaturated ketone”,J. Chem. Soc., Chem. Commun.14:501-2 (1973).
Van der Veen et al., “Electrophilic substitution of &bgr;, &ggr;&phgr;unsaturated esters and ketones using phenyl vinyl sulfoxide as a vinyl cation synthon”,Neth. J. Chem. Soc.4:661-8 (1985).
Wang et al., “Synthesis of a vegetable flavor fragrance”,Shiyou Huagong Gaodeng Xuexiao Xuebao10(4):34-35, 43 (1997) (in Chinese).
Nakano et al., “Cross-condensation reactions of cycloalkanones with aldehydes and primary alcohols under the influence of zirconocene complexes”,J. Org. Chem.52(11):2239-44 (1987).
Yasuda et al., “The effect of alkyl substituents on the mode of reactions of organozinc and organoaluminum compounds with ketones”,Nippon Kagaku Kaishi3:317-23 (1985) (in Japanese).
Sepiol et al., “Elimination of the nitrile group from carbocyclic o-hydroxynitriles”,Synthesis4:290-2 (1979).
Mekhtiev et al., “Synthesis of cycloalkenylcyclanones”,Azerb. Khim. Zh.

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