A practical synthesis of 2-(N-substituted)-aminobenzimidazoles utilizing CuCl-promoted intramolecular cyclization of N-(2-aminoaryl)thioureas |
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| Authors: | Xiao-jun Wang Li Zhang Yibo Xu Dhileepkumar Krishnamurthy Chris H Senanayake |
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| Institution: | Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield CT 06877, USA |
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| Abstract: | A practical protocol for synthesis of 2-(N-substituted)-aminobenzimidazoles was developed. N-(2-Aminoaryl)thioureas undergo a CuCl-promoted intramolecular cyclization to give the corresponding 2-(N-substituted amino)benzimidazoles in good to excellent isolated yields. |
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| Keywords: | Aminobenzimidazole CuCl N-(2-Aminoaryl)thiourea |
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