A Keggin heteropoly acid as an efficient catalyst for an expeditious, one-pot synthesis of 1-methyl-2-(hetero)arylbenzimidazoles |
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Authors: | Manas Chakrabarty Ajanta Mukherji Shiho Arima |
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Affiliation: | a Department of Chemistry, Bose Institute, 93/1, A.P.C. Road, Kolkata 700 009, India b School of Pharmaceutical Sciences, Kitasato University, Minato-ku, Tokyo 108, Japan |
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Abstract: | The Keggin heteropoly acid, silicotungstic acid, H4SiW12O40, has been demonstrated to be highly efficient for an expeditious, one-pot synthesis of 1-methyl-2-(hetero)arylbenzimidazoles from N-methyl-1,2-phenylenediamine and (hetero)aryl aldehydes in ethyl acetate at room temperature. The catalyst works equally well for N-phenyl-1,2-phenylenediamine. |
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Keywords: | 1-Methyl-2-(hetero)arylbenzimidazoles Synthesis Aryl aldehydes N-Methyl-1,2-phenylenediamine Silicotungstic acid |
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