Electrochemical C−H Oxidation/Conjugate Addition/Cyclization Sequences of 2‐Alkyl Phenols: One‐Pot Synthesis of 2‐Amino‐4H‐chromenes

Abstract Electrochemical C−H oxidation/conjugate addition/cyclization sequences of 2‐alkyl phenols with malononitrile are described. This transformation is an environmentally friendly approach by successfully avoiding the use of stoichiometric amounts of external redox reagents. Various 2‐amino‐4 H ‐chromene derivatives are afforded in moderate to high yields through a one‐pot process from 2‐benzyl or 2‐cinnamyl phenol derivatives under mild reaction conditions.