A persistent P,N-heterocyclic carbene†
Guido D. Frey,Maoying Song,Jean-Baptiste Bourg,Bruno Donnadieu,Michele Soleilhavoup,Guy Bertrand
Chemical Communications Pub Date : 09/05/2008 00:00:00 , DOI:10.1039/B812333K
Abstract

Conjugate acids of cyclic (amino)(phosphino)carbenes (P-NHCs) have been prepared, and several different processes have been observed during their deprotonation, which include the formation of a metastable P-NHC, an azomethine ylide, and a bicyclic phosphirane.

Graphical abstract: A persistent P,N-heterocyclic carbene