The use of microwave energy in chemical reactions has revolutionized the field of heterocyclic chemistry in the
past two decades. Synergy of microwave methodology with reactions performed on support media and/or in the absence
of solvent constitutes an environmentally clean technique, that offers tremendous advantages such as clean chemistry, reduction
in reaction times, improved yields, and applicability to wide range of reactions, safety and tremendous scope for
automation over the traditional heating. The benzoannulated azaheterocycles display an impressive repertoire of biological
activities. The present review will provide an in-depth view of microwave-assisted synthetic methodologies of benzo-fused
seven-membered azaheterocycles such as benzodiazepines, benzothiazepines and benzoxazepines.