Michael Addition with an Olefinic Pyridine: Organometallic Nucleophiles and Carbon Electrophiles
作者:Michael R. Stentzel、Douglas A. Klumpp
DOI:10.1021/acs.joc.0c00823
日期:2020.10.2
The conjugate addition reactions of trans-1,2-di(2-pyridyl)ethylene have been studied. This substrate reacts with organolithium nucleophiles, and the resulting anionic intermediates may be trapped by proton or various carbonyl-based electrophiles. It is suggested that the dipyridyl structure stabilizes the intermediate carbanion, allowing the Michael adduct to be captured by an added electrophile.
研究了反式-1,2-二(2-吡啶基)乙烯的共轭加成反应。该底物与有机锂亲核试剂反应,所得的阴离子中间体可能被质子或各种基于羰基的亲电试剂捕获。建议二吡啶基结构稳定中间碳负离子,从而使迈克尔加合物被添加的亲电子试剂捕获。