Copper(I)-catalyzed cross-coupling reaction of acylzirconocene complexes with allylic and/or propargylic halides

Efficient cross-coupling reaction of acylzirconocene chloride with allylic and/or propargylic halides was attained by utilizing a catalytic amount of a Cu(I) salt to give allylic and/or allenic ketones, respectively, in good yields. The mild Cu(I)-catalyzed reaction of acylzirconocene chloride offered an alternative protocol for the generation of an ‘unmasked’ acyl anion.