KOtBu-mediated annulation for the pot-economical synthesis of quinazolinobenzoxazepines†
Abstract
A novel and cost-effective KOtBu-mediated protocol has been developed for synthesizing quinazolinobenzoxazepines from 2-aminobenzonitriles and 2-(2-bromoethoxy)benzaldehydes. This transformation proceeds via a cascade pathway and affords products in moderate to good yields with broad substrate scope and excellent functional group tolerance.