Enantioselective α‐photoalkylation of β‐ketocarbonyls without any external photosensitizer was described in this work. The photoalkylation reactions, enabled solely by a chiral primary amine catalyst, provided convenient constructions of all‐carbon quaternary stereocenters with good activity and high enantioselectivity. Mechanism studies revealed a direct photolytic radical chain process under visible
这项工作描述了β-
酮羰基的对映选择性α-光烷基化反应,而没有任何外部光敏剂。仅通过手性
伯胺催化剂就能进行的光烷基化反应,可以方便地构建具有良好活性和高对映选择性的全
碳四元立体中心。机理研究表明在可见光照射下有直接的光解自由基链过程。