C−C bond formation. We disclose a facile activation of α-halo boronic esters using light and a Lewis base to permit homolytic scission. Addition to styrenes allows the construction of E-allylic boronic esters. The simplicity of activation permits the strategic merger with energy transfer catalysis to enable the stereodivergent synthesis of Z-isomers.
α-
硼基自由基作为多功能中间体重新出现,通过相邻的 C−C 键形成来获取有机
硼。我们公开了使用光和路易斯碱轻松活化α-卤代
硼酸酯以允许均裂。添加到
苯乙烯中可以构建E-烯丙基
硼酸酯。活化的简单性允许与能量转移催化的战略合并,从而实现Z异构体的立体发散合成。