申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US09278900B2
公开(公告)日:2016-03-08
Provided is a process for producing 3,5-dimethyldodecanoic acid, which is an active ingredient of the pheromone of California prionus. More specifically provided is a method for producing 3,5-dimethyldodecanoic acid (5) comprising the steps of converting 2-methylnonyl halide (1) to a 2-methylnonyl metal reagent (2), and reacting the 2-methylnonyl metal reagent (2) with 2-ethylidene malonic acid ester (3) to form 2-(1,3-dimethyldecyl)malonic acid ester (4) as a result of 1,4-addition of the 2-methylnonyl metal reagent (2) to the 2-ethylidene malonic acid ester (3), as shown in the following scheme:
提供了一种制备3,5-二甲基十二酸的过程,该酸是加利福尼亚长角天牛信息素的活性成分。更具体地,提供了一种制备3,5-二甲基十二酸(5)的方法,包括将2-甲基壬基卤化物(1)转化为2-甲基壬基金属试剂(2),并将2-甲基壬基金属试剂(2)与2-乙烯基马来酸酯(3)反应,由于2-甲基壬基金属试剂(2)对2-乙烯基马来酸酯(3)进行1,4-加成反应,形成2-(1,3-二甲基癸基)马来酸酯(4),如下图所示: