A facile and efficient method for the synthesis of N -substituted isoindolin-1-one derivatives under Pd(OAc) 2 /HCOOH system
作者:Yang Zhou、Ping Chen、Xue Lv、Junxing Niu、Yingying Wang、Min Lei、Lihong Hu
DOI:10.1016/j.tetlet.2017.04.073
日期:2017.6
A facile and efficient method for the synthesis of N-substituted isoindolin-1-one derivatives from 2-formylbenzoic acid and amine under Pd(OAc)2/HCOOH system has been described. The whole process is carried out in ligand-free conditions and furnished the desired products by reductive intramolecular cyclization. Furthermore, this procedure is applied successfully for the modification of natural products
corresponding N-substituted dimethyl 3-oxoisoindolin-1-ylphosphonates in good yield which, by means of a dephosphonylation reaction with lithiumaluminum hydride, give the target N-substituted isoindolin-1-ones in moderate to good yield. amino phosphonates - isoindolinones - C-P cleavage - microwave irradiation - one-pot reaction