Copper(II) ethanoate-assisted phosphonation of aryl halides
Abstract
A mixed valence trinuclear copper complex [Cu3(OAc)5{P(OR)3}2] is formed in the reaction between a 2-halogenoaryl azo compound and a trialkyl phosphite in the presence of copper(II) ethanoate which gives the corresponding 2-(dialkylphosphonato)aryl azo compound.