Nickel-catalyzed, ring-forming aromatic C–H alkylations with unactivated alkyl halides
作者:Quentin D. Tercenio、Erik J. Alexanian
DOI:10.1016/j.tet.2019.05.047
日期:2019.8
alkylation of aromatic substrates with unactivated alkyl halides is described. This carbocyclization facilitates the synthesis of diverse fused ring systems from simple aromatic substrates and is an attractive alternative to traditional polar or radical-mediated ring formations. The present system uses unactivated primary and secondary alkyl bromides and chlorides, while avoiding the use of precious palladium
描述了镍催化芳香族底物与未活化的烷基卤化物的 C-H 烷基化反应的发展。这种碳环化促进了从简单的芳香族底物合成多种稠合环系统,并且是传统极性或自由基介导的环形成的有吸引力的替代方案。本系统使用未活化的伯和仲烷基溴和氯化物,同时避免使用贵重的钯催化剂和相关C-H烷基化中常用的反应性更强的烷基卤。