An efficient synthetic method of poly-substituted pyridines was developed. Various poly-substituted pyridines were prepared from the combination of Baylis–Hillman adducts (3 carbons), activated methylene compounds (2 carbons) and ammonium acetate (1 nitrogen) via [3+2+1] annulation protocol in good yields, regioselectively.
开发了一种高效的多取代
吡啶合成方法。通过[3 + 2 + 1]环化方案,从Baylis-Hillman加合物(3个碳),活化的亚甲基化合物(2个碳)和
乙酸铵(1个氮)的组合中,以区域选择性高收率制备了各种多取代的
吡啶。