Lewis Acid-Mediated Cycloaddition of Methylenecyclopropanes with Aldehydes and Imines: A Facile Access to Indene, THF, and Pyrrolidine Skeletons via Homoallylic Rearrangement Protocol
摘要:
Methylenecyclopropanes (MCPs) 1 can react with aldehydes and aldimines to give the corresponding indene, THF, and pyrrolidine cycloaddition products in the presence of (BF3OEt2)-O-. under mild reaction conditions.