Phosphorus carbene and olefine analogues

Abstract

A representative of the yet unknown parent iminophosphane is ButP=NBut 1 which has been recognized as an carbenic analogue for some time. The unusual properties of 1 prompted our investigations of the synthesis of further phosphorus(III)-(p-p)π-bonds systems with an orbital sequence (HOMO= n(P), LUMO= T (P=X)) as well as the reaction behaviour of this class of compounds.