An unexpected aromatic S N2? substitution of a 4-bromobenzopyran
作者:Catherine S. V. Houge-Frydrych、Andrew Marsh、Ivan L. Pinto
DOI:10.1039/c39890001258
日期:——
Reaction of 4-bromo-6-cyano-3,4-dihydro-2,2-dimethyl-3,3-ethylenedioxy-2H-1-benzopyran (2) with secondary amide anions provides C-5 substituted products in moderate yields.