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    • 7. 发明申请
    • PROCESS FOR THE PREPARATION OF A POLYUNSATURATED KETONE COMPOUND
    • 制备聚氧乙烯酮化合物的方法
    • WO2016116634A1
    • 2016-07-28
    • PCT/EP2016/051456
    • 2016-01-25
    • AVEXXIN AS
    • SANDBERG, MarcelAUKRUST, Inger-Reidun
    • C07C303/28C07C309/66C07C327/22C07C319/02C07C323/14C07C319/14C07C323/22
    • C07C319/14C07C303/28C07C319/02C07C319/28C07C327/22C07C309/66C07C323/14C07C321/08
    • A process for the preparation of a polyunsaturated thiol comprising: (1) reacting a polyunsaturated alcohol in the presence of a compound of formula R 2 -SO 2 Hal wherein R 2 is a C 1-20 hydrocarbyl group, such an C 1-10 alkyl group, to form a polyunsaturated sulphonyl ester; (2) converting the polyunsaturated sulphonyl ester to a polyunsaturated thioester by reacting with an anion of formula - SC(=O)R 4 wherein R 4 is a C 1-20 hydrocarbyl group; (3) converting the polyunsaturated thioester to form a polyunsaturated thiol optionally in the presence of an antioxidant, e.g. using a metal carbonate. (4) reacting said polyunsaturated thiol with a compound (LG)R 3 COX wherein X is an electron withdrawing group and R 3 is an alkylene group carrying a leaving group (LG), such as LG-CH 2 - forming (I) where X is an electron withdrawing group and LG is a leaving group; optionally in the presence of an antioxidant, so as to form a polyunsaturated ketone compound.
    • 一种制备多不饱和硫醇的方法,包括:(1)在式R2-SO2Hal化合物存在下使多不饱和醇反应,其中R 2为C 1-20烃基,如C 1-10烷基,形成 多不饱和磺酰酯; (2)通过与式-SC(= O)R4的阴离子反应将多不饱和磺酰酯转化成多不饱和硫酯,其中R4是C1-20烃基; (3)将多不饱和硫酯转化成任选地在抗氧化剂存在下形成多不饱和硫醇。 使用金属碳酸盐。 (4)使所述多不饱和硫醇与化合物(LG)R3COX反应,其中X是吸电子基团,R3是携带离去基团(LG)的亚烷基,如LG-CH2-形成(I),其中X是电子 退党组,LG是离职团体; 任选地在抗氧化剂存在下,以形成多不饱和酮化合物。