882187-78-2Relevant articles and documents
Cobalt-Catalyzed Direct Arylation of Imidazo[1,2-a]pyridine with Aryl Iodides
Babar, Dattatraya A.,Rode, Haridas B.
supporting information, p. 1823 - 1827 (2020/03/23)
The Co(II)Cl2·6H2O catalyzed C–H activation/direct arylation of imidazo[1,2-a]pyridine with aryl/heteroaryl iodide is reported. The cost effective, ligand and additive free protocol using KOAc successfully afforded 3-arylimidazo[1,2-
Metal-free, base catalyzed oxidative amination and denitration reaction: Regioselective synthesis of 3-arylimidazo[1,2-a]pyridines
Devi, Elango Sankari,Alanthadka, Anitha,Nagarajan, Subbiah,Sridharan, Vellaisamy,Maheswari, Chockalingam Uma
supporting information, p. 3485 - 3489 (2018/08/22)
A 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 inexp
Switching of Regioselectivity in a Perfluorohexyl Iodide Mediated Synthesis of Phenylimidazo[1,2-a]pyridines
Roslan, Irwan Iskandar,Chuah, Gaik-Khuan,Jaenicke, Stephan
supporting information, p. 671 - 675 (2017/02/05)
3-Phenylimidazo[1,2-a]pyridines were synthesized through the perfluorohexyl iodide mediated coupling of 2-aminopyridines and phenylacetylenes. In situ iodination of the terminal alkyne by perfluorohexyl iodide reverses the polarity by generating a transient electrophilic iodoalkyne, and this alters the regioselectivity of the phenyl group. The reaction then proceeds by tandem electrophilic alkynylation and cyclization to form the fused-ring product. The protocol affords the 3-phenyl isomer with full regioselectivity and is complementary to reported methodologies for the synthesis of the 2-phenyl isomer starting from the same substrates.