• Bulletin of the Korean Chemical Society
• /
• v.33 no.12
• /
• pp.4150-4154
• /
• 2012

Efficient synthesis of ${\alpha}$-chloroenones bearing ${\beta}$-carbonates or ${\beta}$-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 ${\beta}$-substituted ${\alpha}$-haloenones.

• Bulletin of the Korean Chemical Society
• /
• v.17 no.7
• /
• pp.579-580
• /
• 1996

• Bulletin of the Korean Chemical Society
• /
• v.32 no.5
• /
• pp.1554-1558
• /
• 2011

A novel and efficient method for the synthesis of 2,3-dihydrofurans bearing a variety of substituents on the dihydrofuran ring was achieved by the reaction of cyclic diazodicarbonyl compounds with styrene and vinyl acetate. The key strategy was AgBF$_4$/[Bmim]BF$_4$-catalyzed [3+2] cycloaddition. The synthesized dihydrofurans with an acetate group were further converted to the corresponding 3-acylfurans.