申请人:——
公开号:US20020082457A1
公开(公告)日:2002-06-27
The present invention relates to a process for the preparation of 1-(2,2,6-trimethylcyclohexyl)-3-alkanols with a content of at least 15% of trans isomers, based on the total amount of the 1-(2,2,6-trimethylcyclohexyl)-3-alkanol, by catalytic hydrogenation, where a) 1-(2,6,6-trimethyl-1 or 2-cyclohexen-1-yl)-1-alken-3-ones are reacted in the presence of ruthenium-containing catalysts or catalyst mixtures, or b) 1 -(2,6,6-trimethyl-1 or 2-cyclohexen-1-yl)-1-alken-3-ols are reacted in the presence of catalysts which contain 1 or more elements of groups Ib, VIb and VIII of the Periodic Table of the Elements.
本发明涉及一种通过催化氢化制备反式异构体含量至少为 15%的 1-(2,2,6-三甲基环己基)-3-烷醇的工艺,其中 a) 1-(2,6、1-(2,6,6-三甲基-1 或 2-环己烯-1-基)-1-烯-3-酮在含钌催化剂或催化剂混合物存在下进行反应,或 b) 1-(2,6,6-三甲基-1 或 2-环己烯-1-基)-1-烯-3-醇在含有元素周期表 Ib、VIb 和 VIII 族中 1 个或多个元素的催化剂存在下进行反应。