申请人:Kuraray Co., Ltd.
公开号:US04117247A1
公开(公告)日:1978-09-26
A 1,1,1-trihalogeno-4-methyl-3-penten-2-ol is prepared by thermally isomerizing 1,1,1-trihalogeno-4-methyl-4-penten-2-ol. The isomerization reaction may be catalyzed by an acid or a transition metal of Group 6B, 7B or 8 of the Periodic Table of Elements, or a compound thereof. The 1,1,1-trihalogeno-4-methyl-3-penten-2-ol thus prepared is useful as a synergist for herbicides or a physiologically active compound, and, additionally, is useful as a starting material for the synthesis of 2,2-dimethyl-3-(2',2'-dihalogenovinyl)-cyclopropane carboxylic esters which are active ingredients of insecticides.
通过热异构化1,1,1-三卤代-4-甲基-3-戊烯-2-醇制备1,1,1-三卤代-4-甲基-3-戊烯-2-醇。该异构化反应可以由周期表元素6B、7B或8组的酸或过渡金属,或其化合物作为催化剂。因此制备的1,1,1-三卤代-4-甲基-3-戊烯-2-醇可用作除草剂的增效剂或生理活性化合物,并且还可用作合成杀虫剂活性成分2,2-二甲基-3-(2',2'-二卤代乙烯基)-环丙烷羧酸酯的起始原料。