申请人:TAVARES FRANCIS XAVIER
公开号:WO2013163239A1
公开(公告)日:2013-10-31
Methods for the synthesis of lactams are presented whereby a carboxylic acid of the formula HOOC------OR---NH-LG, wherein OR is an organic moiety and LG is a leaving group, is reacted with an acid, such as an organic acid, in particular a strong acid, and a dehydrating agent, which may be one in the same such as a strong acid anhydride, such that the amount of acid added allows for the desired transformation to take place without the loss of the leaving group (LG) before the cyclization, and recovering the lactam.
本文介绍了一种合成内酰胺的方法,其中一个公式为HOOC------OR---NH-LG的羧酸,其中OR是有机基团,LG是离去基团,与酸(例如有机酸,特别是强酸)和脱水剂反应,脱水剂可以是同一种强酸酐,添加的酸量允许在环化之前进行所需的转化而不会失去离去基团(LG),并回收内酰胺。