New Access to and Reactions of P‐Functional Acylphosphane Complexes

Abstract

AbstractP‐Functional (acylphosphane)tungsten complexes 4a–f have been prepared in good yields by the reaction of phosphinidenoid complexes 2a–d with acyl chlorides 3a,b. The reactions of acyl(chloro)phosphane complex 4a at –80 °C with organolithium reagents selectively led to the formation of lithiated phospha‐enolate complex 5b. The ambident reactivity of this compound was demonstrated in reactions with electrophiles such as PhC(O)Cl, MeI, and Me3SiCl, which yielded O‐substituted complexes 6a,b and 8a,b and P‐substituted complex 7.