Synthesis of imidazo[1,5-c][1,3]benzodiazepines via an aza-Wittig/carbodiimide-mediated annulation process
作者:Pedro Molina、Alberto Tárraga、David Curiel、Carmen Ramirez de Arellano
DOI:10.1016/s0040-4020(97)10050-3
日期:1997.11
The first synthesis of the imidazo[1,5-c][1,3]benzodiazepine ring system has been carried out by reaction of the iminophosphorane derived from the (Z)-5-(o-azidoarylidene)hydantoin with isocyanates. The isomeric (E)-tributyliminophosphorane undergoes intramolecular aza Wittig reaction to give the imidazo[4,5-b]quinolin-2-one ring.
通过衍生自(Z)-5-(邻叠氮基亚芳基)乙内酰脲的亚氨基膦烷与异氰酸酯的反应,进行了咪唑并[1,5-c] [1,3]苯并二氮杂ring环系统的首次合成。异构体(E)-三丁基亚氨基正膦经过分子内的氮杂Wittig反应,得到咪唑并[4,5-b]喹啉-2-酮环。