Borane-Catalyzed C3-Alkylation of Pyridines with Imines, Aldehydes, or Ketones as Electrophiles
作者:Zhong Liu、Jia-Hao He、Ming Zhang、Zhu-Jun Shi、Han Tang、Xin-Yue Zhou、Jun-Jie Tian、Xiao-Chen Wang
DOI:10.1021/jacs.2c00962
日期:2022.3.23
The existing methods, including electrophilic aromatic substitution and C–H activation, often require harsh reaction conditions and excess pyridine and generate multiple regioisomers. Herein, we report a method for borane-catalyzed tandem reactions that result in exclusively C3-selective alkylation of pyridines. These tandem reactions consist of pyridine hydroboration, nucleophilicaddition of the resulting