Nucleo-Palladation-Triggering Alkene Functionalization: A Route to γ-Lactones
摘要:
An unprecedented strategy for the highly effective synthesis of gamma-lactones from homoallylic alcohols was achieved by palladium catalysis in one step. The protocol affords aryl, alkyl, and spiro gamma-lactones directly from readily available "homoallylic alcohols in good yields with excellent functional group tolerance and high chemoselectivity under mild conditions.
A new radical cyclization method for the formation of C(sp3)–C(sp3) and C–O bonds via MnO2-promoted alkene carboesterification with anhydrides is developed.