Metal-free,base catalyzed oxidative amination and denitration reaction: Regioselective synthesis of 3-arylimidazo[1,2-a]pyridines |
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| Authors: | Elango Sankari Devi Anitha Alanthadka Subbiah Nagarajan Vellaisamy Sridharan Chockalingam Uma Maheswari |
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| Institution: | 1. Organic Synthesis Group, Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, India;2. Department of Chemistry, National Institute of Technology, Warangal, Warangal 506 004, Telangana State, India;3. Department of Chemistry and Chemical Sciences, Central University of Jammu, Temporary Academic Block, Sainik Colony Sector E Extension, Jammu 180011, India |
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| Abstract: | A metal-free, regioselective strategy for the synthesis of 3-arylimidazo1,2-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-arylimidazo1,2-a]pyridines. |
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| Keywords: | β-Nitrostyrenes 2-Aminopyridines Oxidation Base catalysis |
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