Dithiane Induced Cycloaddition/Aromatization Tactic for the Synthesis of Multisubstituted Furans
摘要:
The development of a new transition-metal-free tactic for convergent, one-pot synthesis of multisubstituted furans by beta-chloro-vinyl dithiane cyclization with aldehydes is described. Key to the success was the development of a new vinylidene dithiane site as a donor allene that generates the active dihydrofuran, which undergoes in situ aromatization under mild conditions.
The development of a new transition-metal-free tactic for convergent, one-pot synthesis of multisubstituted furans by beta-chloro-vinyl dithiane cyclization with aldehydes is described. Key to the success was the development of a new vinylidene dithiane site as a donor allene that generates the active dihydrofuran, which undergoes in situ aromatization under mild conditions.