1-HALOALKADIENE AND PROCESS FOR PREPARING THE SAME AND A PROCESS FOR PREPARING (9E,11Z)-9,11-HEXADECADIENYL ACETATE
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP3556742A1
公开(公告)日:2019-10-23
The object of the invention is to prepare (9E,11Z)-9,11-hexadecadienyl acetate with a good yield and high purity.
The present invention provides a process for preparing a 1-haloalkadiene of the general formula (1): CH3-(CH2)3-CH=CH-CH-CH-(CH2)a-X, comprising a step of conducting a Wittig reaction between a haloalkenal of the general formula (2): OHC-CH=CH-(CH2)a-X, and a triarylphosphonium pentylide of the general formula (3): CH3-(CH2)3-CH--P+Ar3, to obtain the 1-haloalkadiene, and the use of a (7E,9Z)-1-halo-7,9-tetradecadiene obtained by the process for a process of preparing (9E,11Z)-9,11-hexadecadienyl acetate.
本发明的目的是制备收率高、纯度高的(9E,11Z)-9,11-十六碳二烯乙酸酯。
本发明提供了一种制备通式(1)的 1-卤代碳二烯的工艺:CH3-(CH2)3-CH=CH-CH-CH-(CH2)a-X,包括在通式(2)的卤代烯醛之间进行维蒂希反应的步骤:OHC-CH=CH-(CH2)a-X的卤代烯醛与通式(3)的三芳基戊基鏻之间进行威蒂什反应:CH3-(CH2)3-CH--P+Ar3之间的反应,得到1-卤代烷二烯,并将通过该工艺得到的(7E,9Z)-1-卤代-7,9-十四烷二烯用于制备(9E,11Z)-9,11-十六烷二烯乙酸酯的工艺中。