A One-Pot Synthesis of Functionalised 3-pyrolin-2-ones by a four-component reaction between Triphenylphosphine, Primary Amines, Dimethyl Acetylenedicarboxylate and Ethyl Chlorooxoacetate
作者:Mohammad Anary-Abbasinejad、Hossein Anaraki-Ardakani、Alimohammad Dehghan、Alireza Hassanabadi、Mohammad Reza Seyedmir
DOI:10.3184/030823407x255542
日期:2007.10
Reaction between triphenylphosphine, dimethy acetylenedicarboxylate and amines produces phosphorus ylids which undergo a smooth reaction with ethyl chlorooxoacetate and triethylamine to produce dimethyl N-aryl-(or alkyl)-4-ethoxy-5-oxo-2,5-dihydro-1H-pyrole-2,3-dicarboxylates in high yields.
三苯基膦、乙炔二甲酸二甲酯和胺之间的反应生成磷叶立德,后者与氯代乙酸乙酯和三乙胺顺利反应生成二甲基 N-芳基-(或烷基)-4-乙氧基-5-氧代-2,5-二氢-1H-吡咯-2,3-二羧酸盐收率高。