A new and efficient strategy for the preparation of 1,5,2-diazaphosphorines from primary β-enaminophosphonates
作者:Francisco Palacios、Ana M. Ochoa de Retana、Julen Oyarzabal
DOI:10.1016/s0040-4020(99)00068-x
日期:1999.3
A new and efficient synthesis of 1,5,2-diazaphosphorines is described. The key step is a base-induced heterocyclization of functionalized urea compounds. These compounds are formed by addition of primary beta-enaminophosphonates to isocyanates. (C) 1999 Elsevier Science Ltd. All rights reserved.