Abstract The Pd-catalyzed conjugate addition of diorganozinc reagents to α, β-unsaturated carbonyl compounds has been applied to a variety of enone substrates, both cyclic and acyclic, encompassing various combinations of aryl and alkyl substitution, in combination with diorganozinc reagents incorporating alkyl (Me, linear and branched) or Ph groups. While both Pd 0 and Pd II complexes have been found to be competent precatalysts, ...