Visible Light Driving Alkene Difunctionalization Reaction Involving Group Migration

As an important synthetic method in organic chemistry research, the difunctionalization of alkenes plays an important role in the field of synthetic chemistry.In recent years, the difunctionalization of alkenes caused by free radicals participating in the migration of intramolecular functional groups has risen rapidly, providing a new idea for the difunctionalization of alkenes.This strategy has the advantages of atom economy and environmental friendliness.As an effective means to generate radical precursors, mild and green photocatalysis has inspired chemistsʼ interest in initiating difunctionalization of alkenes by using photocatalysis to drive group migration.According to the species of near and far aryl, heteroaryl, imine, cyano, acyl, alkynyl, alkenyl and other functional groups involved in photocatalytic radicals, the alkene difunctionalization reactions are classified and summarized, and some reaction mechanisms are discussed.