申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP3929173A1
公开(公告)日:2021-12-29
The present invention provides a process for preparing (9Z,11E)-9,11-hexadecadienal of the following formula (4), the process comprising: subjecting (2E)-2-heptenal of the following formula (1) to a Wittig reaction with a triarylphosphonium 9,9-dialkoxynonylide compound of the following general formula (2), wherein Ar represents an aryl group that may be same with or different from each other, and R1 and R2 represent, independently of each other, a monovalent hydrocarbon group having 1 to 15 carbon atoms, or R1 and R2 may form together a divalent hydrocarbon group, R1-R2, having 2 to 10 carbon atoms to form a (5E,7Z)-16,16-dialkoxy-5,7-hexadecadiene compound of the following general formula (3), wherein R1 and R2 are as defined above; and hydrolyzing the (5E,7Z)-16,16-dialkoxy-5,7-hexadecadiene compound (3) to form (9Z,11E)-9,11-hexadecadienal (4).
本发明提供了一种制备下式(4)的(9Z,11E)-9,11-十六碳二烯醛的工艺,该工艺包括:使下式(1)的(2E)-2-庚烯醛与下式通式(2)的 9,9-二烷氧基壬基化三芳基鏻化合物进行维蒂希反应,其中 Ar 代表可以相互相同或不同的芳基,R1 和 R2 相互独立地代表、具有 1 至 15 个碳原子的一价烃基,或 R1 和 R2 可共同形成具有 2 至 10 个碳原子的二价烃基 R1-R2,以形成下通式(3)的 (5E,7Z)-16,16-二烷氧基-5,7-十六碳二烯化合物,其中 R1 和 R2 如上定义;水解(5E,7Z)-16,16-二烷氧基-5,7-十六碳二烯化合物(3),形成(9Z,11E)-9,11-十六碳二烯醛(4)。