申请人:Hamada Yasumasa
公开号:US20060135802A1
公开(公告)日:2006-06-22
The present invention relates to a process for producing (2R)-2-propyloctanoic acid, which comprises subjecting (2R)-2-hexyloxirane to a two-carbon adding reaction with ring-opening reaction, followed by a protecting reaction of a hydroxyl group to convert it to a compound represented by formula (I):
(wherein X represents an optionally protected hydroxyl group) and then subjecting the compound to a one-carbon adding reaction to convert it to (2R)-2-propyloctanamide, followed by recrystallization and hydrolysis. According to the process of the present invention, (2R)-2-propyloctanoic acid can be produced by less steps as compared with the conventional method without a dangerous reaction.
本发明涉及一种制备(2R)-2-丙基辛酸的方法,包括将(2R)-2-己氧环烷经过两碳加成反应和环开启反应,然后进行羟基保护反应将其转化为式(I)所表示的化合物(其中X表示可选的羟基保护基),然后将该化合物进行一碳加成反应,转化为(2R)-2-丙基辛酰胺,随后进行重结晶和水解。根据本发明的方法,与传统方法相比,可以通过较少的步骤生产(2R)-2-丙基辛酸,而且不会发生危险反应。