A novel isocyanide-based three-component synthesis of benzimidazo[1,2-a][1,4]diazepinones
作者:Mehdi Ghandi、Nahid Zarezadeh、Abuzar Taheri
DOI:10.1016/j.tetlet.2011.01.073
日期:2011.3
3-(2-Formyl-1H-benzimidazol-1-yl)propanoic acid, as a bifunctional formyl acid was prepared in four steps. This compound underwent a one-pot reaction with amines and alkyl isocyanides via the Ugi 4-center-3-component condensation. A series of novel benzimidazole-fused 1,4-diazepine-5-ones were obtained via this method in moderate to excellent yields.
分四步制备作为双官能甲酰基酸的3-(2-甲酰基-1 H-苯并咪唑-1-基)丙酸。该化合物通过Ugi 4-中心-3-组分缩合反应与胺和烷基异氰化物进行一锅反应。通过该方法以中等至优异的产率获得了一系列新颖的苯并咪唑稠合的1,4-二氮杂-5-酮。