An efficient and general strategy for the synthesis of 1,4-dihydro-λ3- and -λ5-azaphosphinines from 2-aza-1,3-dienes

Abstract

The first example of the use of 2-aza-1,3-dienes in the preparation of six-membered heterocycles containing phosphorus and nitrogen is described; 1,4-dihydro-1,4-λ³- and -λ⁵-azaphosphinines (3) have been prepared by reaction of 2-aza-1,3-diene (1) with halogenophosphines.