Synthesis of α-Phosphorylated α,β-Unsaturated Imines and Their Selective Reduction to Vinylogous and Saturated α-Aminophosphonates
作者:Francisco Palacios、Javier Vicario、Agnieszka Maliszewska、Domitila Aparicio
DOI:10.1021/jo062609+
日期:2007.3.1
[GRAPHIC]An efficient synthesis of alpha,beta-unsaturated imines derived from alpha-aminophosphonates is achieved through aza-Wittig reaction of P-trimethyl phosphazenes with beta,gamma-unsaturated alpha-ketophosphonates. Selective 1,2-reduction of such 1-azadienes affords beta,gamma-unsaturated alpha-aminophosphonates, phosphorylated analogs of vinylglycines, which are hydrogenated to yield saturated alpha-aminophosphonate derivatives.