Alpha-(alkylcyclohexyloxy)-beta-alkanols and perfume compositions
申请人:Kao Corporation
公开号:US05194423A1
公开(公告)日:1993-03-16
An .alpha.-(alkylcyclohexyloxy)-.beta.-alkanol of formula (1) ##STR1## wherein at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 is the group ##STR2## wherein R.sup.9 and R.sup.10 are the same or different alkyl groups having 1 to 4 carbon atoms or are coupled with each other to form a cycloalkyl group, and R.sup.11 is a hydrogen atom or an alkyl group having 1 to 4 carbons or is a hydrogen atom when R.sup.9 and R.sup.10 form the cycloalkyl group, and the remaining R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 groups are hydrogen atoms or methyl groups, and wherein R.sup.6, R.sup.7 and R.sup.8 are hydrogen atoms or the same or different alkyl groups having 1 to 6 carbon atoms.
Alpha-(alkylcyclohexyloxy)-beta-alkanols and perfume compositions containing the same
申请人:Kao Corporation
公开号:EP0467290A2
公开(公告)日:1992-01-22
An a-(alkylcyclohexyloxy)-β-alkanol of formula (1)
wherein at least one of R1, R2, R3, R4, and R5 is the group
wherein R9 and R10 are the same or different alkyl groups having 1 to 4 carbon atoms or are coupled with each other to form a cycloalkyl group, and R11 is a hydrogen atom or an alkyl group having 1 to 4 carbons or is a hydrogen atom when R9 and R10 form the cycloalkyl group, and the remaining R1, R2, R3, R4 and R5 groups are hydrogen atoms or methyl groups, and wherein R6, R7 and R8 are hydrogen atoms or the same or different alkyl groups having 1 to 6 carbon atoms.
METHOD OF PRODUCING 1-(2-t-BUTYL CYCLOHEXYLOXY)-2-ALKANOL
申请人:Kao Corporation
公开号:EP2799417A1
公开(公告)日:2014-11-05
The present invention relates to [1] a method of producing a 1-(2-t-butylcyclohexyloxy)-2-alkanol including a step of adjusting a raw material mixture containing a 1-(2-t-butylphenyloxy)-2-alkanol represented by the formula (1) to a pH of from 7.5 to 10.0 and hydrogenating it in the presence of a palladium catalyst (A) and a metal catalyst (B) containing one or more kinds of members selected from ruthenium, rhodium, platinum, and nickel; and [2]a perfume composition containing a 1-(2-t-butylcyclohexyloxy)-2-alkanol obtained by the foregoing method. The present invention provides a method of efficiently producing a 1-(2-t-butylcyclohexyloxy)-2-alkanol having a high trans-isomer content and a strong woody or amber-like fragrance as a perfume material and also having excellent persistence of aroma.
(In the formula, R1 is a methyl group or an ethyl group.)
METHOD OF PRODUCING 1-(2-t-BUTYL CYCLOHEXYLOXY)-2-BUTANOL
申请人:Kao Corporation
公开号:EP2799416B1
公开(公告)日:2016-10-12
METHOD OF PRODUCING 1-(2-T-BUTYL CYCLOHEXYLOXY)-2-BUTANOL
申请人:KAO CORPORATION
公开号:US20140378713A1
公开(公告)日:2014-12-25
The present invention relates to [1] a method of producing 1-(2-t-butylcyclohexyloxy)-2-butanol including a step of hydrogenating 1-(2-t-butylphenyloxy)-2-butanol under a condition at a hydrogen pressure of from 1 to 5 MPa in the presence of a palladium catalyst (A) supported on peat-derived active carbon and a metal catalyst (B) containing one or more kinds of members selected from ruthenium, rhodium, platinum, and nickel; and [2] a perfume composition containing 1-(2-t-butylcyclohexyloxy)-2-butanol obtained by the foregoing method. According to the present invention, 1-(2-t-butylcyclohexyloxy)-2-butanol having a woody or amber-like fragrance as a perfume material and excellent fragrance notes can be obtained in a high purity because of a small remaining amount of a reaction intermediate and in a high yield.