Palladium-Catalyzed [3+2] Cycloaddition of 4-Vinyl-4-Butyro-lactones with Sulfamate-Derived Cyclic Imines: Construction of Sulfamate-Fused Pyrrolidines

Abstract

The palladium-catalyzed [3+2] decarboxylative cycloaddition of 4-vinyl-4-butyrolactones with sulfamate-derived cyclic imines has been developed, providing the sulfamate-fused pyrrolidine derivatives in high yields with good diastereoselectivities. The scale-up reaction and further derivation of the product worked well, demonstrating the potential application of the current reaction in organic synthesis. A plausible reaction mechanism was also proposed.