申请人:Toray Industries, Inc.
公开号:US04613680A1
公开(公告)日:1986-09-23
Angelic acid or esters thereof which are useful as perfume materials are prepared by isomerizing tiglic acid or an ester thereof with an organic sulfinic acid as the catalyst, and novel esters of angelic acid represented by the formula ##STR1## wherein R represents 3-hexenyl, 3-methyl-2-butenyl, 3-methyl-3-butenyl, 3-methyl-2-pentenyl, 3-methyl-4-pentenyl, CH.sub.3 (CH.sub.2).sub.l - (in which l is an integer from 5 to 9), cyclopentyl, cyclohexyl, 2-methylpentyl, .alpha.-methylbenzyl, neryl or furfuryl are provided as part of said esters of angelic acid.
天使酸或其酯作为香料原料的制备方法是通过使用有机亚砜酸作为催化剂,对丁烯酸或其酯进行异构化来制备,其中表示为公式的天使酸的新酯为提供的天使酸酯的一部分。其中R代表3-己烯基、3-甲基-2-丁烯基、3-甲基-3-丁烯基、3-甲基-2-戊烯基、3-甲基-4-戊烯基、CH3(CH2)l -(其中l为5到9的整数)、环戊基、环己基、2-甲基戊基、α-甲基苯甲基、涅里尔或呋喃基。