[EN] HIGHLY SELECTIVE NOVEL AMIDATION METHOD<br/>[FR] PROCÉDÉ D'UNE NOUVELLE AMIDATION TRÈS SÉLECTIVE
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2005121133A1
公开(公告)日:2005-12-22
The present invention provides an industrial production method with a short process having a high yield of an aliphatic cyclic carboxamide having carboxyl group, which comprises reacting functional group-selectively using an inexpensive condensing agent without protecting the carboxyl group by esterification, that is, reacting carboxylic acid anhydride obtained by reacting carboxylic acid and tertiary carboxylic acid halide with aliphatic cyclic secondary amine having carboxyl group.
本发明提供了一种工业生产方法,该方法具有短流程、高产率,用于制备含有羧基的脂肪族环状酰胺,其特点在于使用廉价的缩合剂对功能团进行选择性反应,而不通过酯化保护羧基,即通过将由羧酸与叔羧酸卤化物反应得到的羧酸酐与含有羧基的脂肪族环状仲胺进行反应。