Metal-free, base catalyzed oxidative amination and denitration reaction: Regioselective synthesis of 3-arylimidazo[1,2-a]pyridines
作者:Elango Sankari Devi、Anitha Alanthadka、Subbiah Nagarajan、Vellaisamy Sridharan、Chockalingam Uma Maheswari
DOI:10.1016/j.tetlet.2018.08.024
日期:2018.9
metal-free, regioselective strategy for the synthesis of 3-arylimidazo[1,2-a]pyridines from β-nitrostyrenes and 2-aminopyridines using triethylamine as the catalyst and H2O2 (30% aq.) as the oxidant is reported. The use of an inexpensive base and facile reaction conditions make this strategy a practical alternative for the synthesis of 3-arylimidazo[1,2-a]pyridines.
使用三乙胺作为催化剂,以H 2 O 2(30%水溶液)为氧化剂,从金属上合成β-硝基苯乙烯和2-氨基吡啶的3-芳基咪唑并[1,2- a ]吡啶的无金属区域选择性策略是报告。使用廉价的碱和容易的反应条件使该策略成为合成3-芳基咪唑并[1,2- a ]吡啶的实用替代方法。