Merging of Light/Dark Palladium Catalytic Cycles Enables Multicomponent Tandem Alkyl Heck/Tsuji–Trost Homologative Amination Reaction toward Allylic Amines
作者:Nikita Kvasovs、Jian Fang、Fedor Kliuev、Vladimir Gevorgyan
DOI:10.1021/jacs.3c04968
日期:2023.8.23
light-induced palladium-catalyzed homologative three-component synthesis of allylic amines has been developed. This protocol proceeds via a unique mechanism involving two distinct cycles enabled by the same Pd(0) catalyst: a visible light-induced hybrid radical alkyl Heck reaction between 1,1-dielectrophile and styrene, followed by the “in dark” classical Tsuji–Trost-type allylic substitution reaction. This
开发了一种可见光诱导的钯催化同系三组分烯丙胺合成方法。该协议通过一种独特的机制进行,涉及由相同的 Pd(0) 催化剂实现的两个不同的循环:1,1-介电试剂和苯乙烯之间的可见光诱导的杂化自由基烷基 Heck 反应,然后是“在黑暗中”经典的 Tsuji- Trost型烯丙基取代反应。该方法适用于各种伯胺和仲胺、芳基烯烃、亲电试剂以及复杂的环境。所得产物的区域化学主要受1,1-介电试剂的结构控制。 π-烯丙基钯中间体的参与可以控制立体选择性,这一点已被证明高达 95:5 er。