A mild visible-light induced 4CzIPN/H+ photoredox system has been developed that enables hydroxyketones serving as a carbon radical precursor via formal C−O bond cleavage. This process was successfully exploited in the coupling/cyclization reaction of N-arylacrylamides and thereby provided a viable access to acyl oxindoles. This protocol features advantages including no need for any metal catalyst
已开发出一种温和的可见光诱导 4CzI
PN/H +光氧化还原系统,使羟基酮能够通过正式的 C−O 键裂解充当碳自由基前体。该过程已成功用于 N-芳基
丙烯酰胺的偶联/环化反应,从而为酰基羟
吲哚提供了可行途径。该方案的优点包括不需要任何
金属催化剂和添加剂、高产率、广泛的底物范围、克可扩展性以及 H 2 O 作为唯一副产物的释放。