Efficient and Facile Synthesis of a-Chloroenones Bearing β-Carbonates or β-Carbamates

摘要

Efficient synthesis of α-chloroenones bearing β-carbonates or β-carbamates was achieved by rhodium(II)-catalyzed reaction of cyclic diazodicarbonyl compounds with a variety of chloroformates or carbamyl chlorides in good yields. These reactions provided a useful and rapid route to β-substituted α-haloenones.