The research process of monoamides is reported in this paper.The structure of the extracted complex crystals and the relations between the structure and properties of the amide are discussed.

• 介绍了近年来取代单酰胺类萃取剂的研究进展情况，探讨了萃合物晶体结构及取代单酰胺结构与萃取性能的关系。