Title:
【発明の名称】新規環式ケトン、香料及び芳香製品の香り特性を付与し、改善し、高め又は変調する方法、香料組成物、及び、新規化合物を製造するための方法並びにそのための中間体
Document Type and Number:
Japanese Patent JP2901776
Kind Code:
B2
Abstract:
Preparation of a compound of formula
in which the dotted lines show the location of a single or double bond, the symbol R<1> denotes a hydrogen atom or a methyl radical, the symbol R<2> denotes a saturated or unsaturated C1-C4 alkyl radical with a straight or branched chain, and the symbol R<3> denotes a methyl, ethyl or methylene radical, with the exclusion of 1-(2,2,3,6-tetramethyl-1-cyclohexyl)-1-hexen-3-one and of 1-(2,2,3,6-tetramethyl-1-cyclohexyl)-3-hexanone, the process being characterised in that a compound of formula
in which the dotted lines and the symbol R<3> are defined as above, is treated with a Lewis acid to obtain an aldehyde of formula
in which the dotted lines and the symbol R<3> have the meaning shown above, and this aldehyde is converted into the compound (I) with the aid of reactions of a conventional type.
This process makes it possible to obtain new compounds of formula
in which the dotted lines show the location of a single or double bond, the symbol R<1> denotes a hydrogen atom or a methyl radical, the symbol R<2> denotes a saturated or unsaturated C1-C4 alkyl radical with a linear or branched chain, with the exclusion of 4-(2,2,3,6-tetramethyl-1-cyclohexyl)-2-butanone, 4-(2,2,3,6-tetramethyl-1-cyclohexyl)-3-buten-2-one, 1-(2,2,3,6-tetramethyl-1-cyclohexyl)-1-hexen-3-one and 1-(2,2,3,6-tetramethyl-1-cyclohexyl)-3-hexanone, and of the particular isomeric forms of these compounds. The compounds (Ia) have advantageous olfactive properties and are consequently useful as perfuming ingredients for the preparation of perfuming compositions and scented articles.
Inventors:
KURISUCHIAN SHAPYUI
KAARUUHAINRITSUHI SHURUTEEERUTE
ERUE PAMANGURU
KURISUCHIAN MARUGOTSUTO
KAARUUHAINRITSUHI SHURUTEEERUTE
ERUE PAMANGURU
KURISUCHIAN MARUGOTSUTO
Application Number:
JP6170091A
Publication Date:
June 07, 1999
Filing Date:
March 26, 1991
Export Citation:
Assignee:
FUIRUMENITSUHI SA
International Classes:
A61K8/35; A61Q13/00; C07C33/14; C07C45/30; C07C45/58; C07C45/62; C07C45/75; C07C47/225; C07C47/30; C07C47/32; C07C47/42; C07C47/45; C07C49/11; C07C49/21; C07C69/75; C07C403/16; C07D303/04; C11B9/00; C11D3/50; C11D9/44; (IPC1-7): C07C49/11; A61K7/46; C07C45/58; C07C45/75; C07C47/32; C07C47/42; C07C49/21; C07D303/04; C11B9/00; C11D3/50; C11D9/44
Foreign References:
Attorney, Agent or Firm:
Toshio Yano (1 outside)