The visible light-driven organophotoredox catalysis is reported for the construction of vicinal quaternary carbon centers. Intermolecular conjugate addition of alkyl radicals, derived from 2,2-disubstituted dihydroquinazolinones, to Michael acceptors under blue light irradiation and rhodamine B catalysis allows the facile assembly of diverse, vicinal secondary/quaternary, tertiary/quaternary, and
据报道,可见光驱动的有机光氧化还原催化用于邻位季碳中心的构建。在蓝光和
若丹明B催化下,将2,2-二取代的二氢
喹唑啉酮衍生的烷基分子间共轭加成到Michael受体上,从而可容易地在位置处组装不同的,相邻的仲/季,叔/季和季/季碳中心室内温度。我们的方法提供了一种合成上通用的方案,因为2,2-二取代的二氢
喹唑啉酮和Michael受体都可以从容易获得的酮中方便地制备。