Synthesis of 2-(Benzoylmethylene)imidazolidines and -hexahydropyrimidines by Condensation of Ethyl Benzoylacetimidates With 1,2-Ethanediamine or 1,3-Propandiamine, and Some Addition Reactions
作者:Zhi-tang Huang、Zhi-rong Liu
DOI:10.1055/s-1987-27942
日期:——
Ethyl benzoylacetimidates react with 1,2-ethanediamine or 1,3-propanediamine in absolute ethanol to afford the 2-(benzoylmethylene)-imidazolidines or -hexahydropyrimidines, respectively. The structure of these products as ketene aminals is confirmed by spectral data. Electrophilic additions of hydrochloric acid and diethyl diazenedicarboxylate to the ketene aminals are also described.
苯甲酰乙酰亚胺酸乙酯与 1,2-乙二胺或 1,3-丙二胺在绝对乙醇中发生反应,分别生成 2-(苯甲酰亚甲基)咪唑烷或六氢嘧啶。光谱数据证实了这些产物的烯酮胺结构。此外,还介绍了盐酸和重氮二甲酸二乙酯与烯酮氨基化合物的亲电加成。