Synthesis of 3-Acyl and 2-Acyl Imidazo [1, 2-a]pyridines by I2-Mediated Diamination of α, β-Unsaturated Ketones with 2-Aminopyridines

Wenquan Yu, Lina Song, Xianhai Tian, Ting Zhao, Manman Wang, Jie Wu, Yan Qiao, Junbiao Chang
2018 Youji huaxue  
a 郑州大学化学与分子工程学院 郑州 450001) Abstract Employing molecular iodine as the sole oxidant, a new and transition metal-free diamination reaction of α,β-unsaturated ketones with 2-aminopyridines has been developed. It can not only produce 3-acyl imidazo[1,2-a]pyridines but can also generate novel 2-acyl derivatives regioselectively by changing the solvent and substituents in the 2-aminopyridine substrates.
doi:10.6023/cjoc201712045 fatcat:5bqclk2refanhmgplyjgcgxwva