intermolecular carbohalogenation of alkynes with alkenyl bromides enabled by dual photoredox and nickel catalysis is described. This dual protocol enables an atom-economic access to a wide array of brominated 1,3-dienes from simple starting materials. Broad substrate scope and high regioselectivity are observed. The synthetic utility has been demonstrated and preliminary mechanistic studies have been performed
描述了通过双光
氧化还原和
镍催化实现的
炔烃与
烯基
溴的区域选择性分子间
碳卤化反应。这种双重协议能够以原子经济方式从简单的起始材料中获取各种
溴化 1,3-二
烯。观察到广泛的底物范围和高区域选择性。合成效用已得到证实,并进行了初步的机理研究以阐明反应途径。