Selective Synthesis of Substituted Pyrrole-2-phosphine Oxides and -phosphonates from 2<i>H</i>-Azirines and Enolates from Acetyl Acetates and Malonates
作者:Francisco Palacios、Ana M. Ochoa de Retana、Ander Vélez del Burgo
DOI:10.1021/jo201932m
日期:2011.11.18
simple and efficient selective synthesis of 1H-pyrrole-2-phosphine oxides 3 and -phosphonates 7 by addition of enolates derived from acetyl acetates to 2H-azirinylphosphine oxide 1 and -phosphonate 6 is reported. Nucleophilic addition of enolates derived from diethyl malonate to 2H-azirines 1 and 6 led to the formation of functionalized 2-hydroxy-1H-pyrrole-5-phosphine oxide 9 and -phosphonate 10,