Directed ortho Metalation Reactions of Aryl O-Carbamates; A Regiospecific Synthesis of 2,2-Disubstituted 2H-1-Benzopyrans
作者:Brian A. Chauder、Alexey V. Kalinin、Victor Snieckus
DOI:10.1055/s-2001-9747
日期:——
A one-pot regiocontrolled synthesis of 2,2-disubstituted 2H-1-benzopyrans 5 from aryl O-carbamates 4 using the directed ortho metalation reaction is described and constitutes an advantageous complement to classical routes for this class of heterocycles.