Visible-light-catalyzed synthesis of 1,3-benzoxazines via formal [4 + 2] cycloaddition of oximes with o-hydroxybenzyl alcohols

Abstract

A formal [4 + 2] cycloaddition of oximes with o-hydroxybenzyl alcohols was developed, affording the facile synthesis of diverse 1,3-benzoxazine derivatives under visible light-based organocatalytic and TsOH conditions. The reaction...