[EN] PROCESS FOR THE MANUFACTURE OF 6,10,14-TRIMETHYLPENTADECAN-2-ONE, ISOPHYTOL AND ALPHA-TOCOPHEROL<br/>[FR] PROCÉDÉ DE PRODUCTION DU 6,10,14-TRIMÉTHYLPENTADÉCAN-2-ONE, ISOPHYTOL ET ALPHA-TOCOPHÉROL
申请人:DSM IP ASSETS BV
公开号:WO2017098050A1
公开(公告)日:2017-06-15
The present invention is directed to a process for the manufacture of 6,10,14-trimethylpentadecan-2-one ("C18-ketone") comprising the step of hydrogenating a mixture of (3E,5E,9E)-3,4-dehydrofarnesylacetone and (3Z,5E,9E)-3,4-dehydrofarnesylacetone with hydrogen in the presence of a catalyst, whereby the catalyst is capable of preferentially hydrogenating carbon-carbon double bonds over carbon-oxygen double bonds. Preferably the catalyst comprises a metal selected from the group consisting of palladium, platinum, rhodium, iridium and nickel and mixtures thereof. A process for the preparation of (2E,6E)-farnesal by selective oxidation of (2E,6E)-farnesol and a process for the manufacture of a mixture of (3E,5E,9E)-3,4-dehydrofarnesylacetone and (3Z,5E,9E)-3,4-dehydrofarnesylacetone from (2E,6E)-farnesal is also disclosed.
本发明涉及一种生产6,10,14-三甲基十五碳二酮(“C18-酮”)的方法,包括在催化剂存在下,用氢气加氢混合物(3E,5E,9E)-3,4-去氢法尼酮和(3Z,5E,9E)-3,4-去氢法尼酮,其中催化剂能够优先加氢碳碳双键而不是碳氧双键。优选的催化剂包括钯、铂、铑、铱和镍及其混合物。本发明还公开了一种通过选择性氧化(2E,6E)-法尼醇制备(2E,6E)-法尼醛的方法,以及一种从(2E,6E)-法尼醛制备(3E,5E,9E)-3,4-去氢法尼酮和(3Z,5E,9E)-3,4-去氢法尼酮混合物的方法。