Atmosphere-Controlled Chemoselectivity: Rhodium-Catalyzed Alkylation and Olefination of Alkylnitriles with Alcohols
作者:Junjun Li、Yuxuan Liu、Weijun Tang、Dong Xue、Chaoqun Li、Jianliang Xiao、Chao Wang
DOI:10.1002/chem.201704037
日期:2017.10.17
The chemoselective alkylation and olefination of alkylnitriles with alcohols have been developed by simply controlling the reaction atmosphere. A binuclear rhodium complex catalyzes the alkylation reaction under argon through a hydrogen‐borrowing pathway and the olefination reaction under oxygen through aerobic dehydrogenation. Broad substrate scope is demonstrated, permitting the synthesis of some
通过简单地控制反应气氛,已经开发了烷基腈与醇的化学选择性烷基化和烯化。双核铑配合物可通过氢借入途径催化氩气下的烷基化反应,而需氧脱氢则可催化氧气下的烯化反应。展示了广泛的底物范围,可以合成一些重要的有机结构单元。机理研究表明,烷基化产物可通过氢化铑将烯烃中间体共轭还原而形成,而烯烃产物的形成可能是由于氢化铑络合物与分子氧的氧化所致。