作者:Ramesh C. Samanta、Julia Struwe、Lutz Ackermann
DOI:10.1002/anie.202004958
日期:2020.8.10
nickel catalysis commonly requires high reaction temperatures and strong bases, translating into limited substrate scope. Herein, nickel‐catalyzed C−H alkylations of unactivated 8‐aminoquinoline amides have been realized under exceedingly mild conditions, namely at room temperature, with a mild base and a user‐friendly electrochemical setup. This electrocatalyzed C−H alkylation displays high functional
羧酸衍生物的直接烷基化具有挑战性,特别是镍催化通常需要高反应温度和强碱,导致底物范围有限。在此,未活化的 8-氨基喹啉酰胺的镍催化 C-H 烷基化反应在极其温和的条件下(即室温)、使用温和的碱和用户友好的电化学装置实现。这种电催化的CH烷基化显示出高官能团耐受性,并且适用于一级和二级烷基化。基于详细的机理研究,提出了镍(II/III/I)催化歧管。