Copper-Catalyzed Divergent Trifluoromethylation/Cyclization of Unactivated Alkenes
作者:Jing Zheng、Ziyang Deng、Yan Zhang、Sunliang Cui
DOI:10.1002/adsc.201500965
日期:2016.3.3
Most of the precedent copper‐catalyzed trifluoromethylation reactions of unactivated alkenes concern terminal alkenes, and these processes are terminated in elimination, or nucleophilic addition, or semipinacol rearrangement, or CH bond functionalization steps. In this study, we develop a trifluoromethylation method for both unactivated terminal and internal alkenes to enable divergent late‐stage
大多数未活化烯烃的先例铜催化的三氟甲基化反应的涉及末端烯烃,并且这些方法在消除或亲核加成,或重排semipinacol或C端的 H键的官能化步骤。在这项研究中,我们开发了一种针对未活化的末端烯烃和内部烯烃的三氟甲基化方法,以实现发散的后期自由基环化并实现高分子复杂性。这些环化与鲍德温规则完全一致。此外,进行了动力学同位素效应(KIE)的研究和控制反应,并提出了可能的机理。