PALLADIUM CATALYZED COUPLING REACTION OF ACYLCHROMATE COMPLEXES AND ALLYLIC BROMIDES

A cross-coupling reaction between acylchromate complexes and allylic bromides takes place under CO atmosphere in the presence of a catalytic amount of Pd(PPh3)4 to afford the corresponding allylic ketones in good yield. The same reaction also proceeds by adding RNC under argon atmosphere in place of CO atmosphere. Thus, the acylchromate complex works as a good acyl donor for Pd catalyzed acylation reaction.