申请人:TAVARES FRANCIS XAVIER
公开号:WO2015061407A1
公开(公告)日:2015-04-30
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 such as that of the formula (a), provided herein, wherein G represents the atom(s) needed to form a closed ring.
本文介绍了一种合成内酰胺的方法,其中一个化学式为HOOC------OR---NH-LG的羧酸,其中OR是一个有机基团,LG是一个离去基团,与一种酸反应,例如有机酸,特别是强酸,并且使用一种脱水剂,可以是同一种强酸酐,以便添加的酸量允许所需的转化在环化之前发生,而不会失去离去基团(LG),并且回收内酰胺,例如本文提供的化学式(a),其中G代表形成闭合环所需的原子。