A mild, efficient and one-pot synthesis of 2-substituted benzimidazoles by ZrOCl2. 8H2O catalyzed ring closure reaction

CS Reddy, A Nagaraj

Index: Sanjeeva Reddy; Nagaraj Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2008 , vol. 47, # 7 p. 1154 - 1159

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Citation Number: 16

Abstract

Abstract: A mild, efficient and one-pot synthesis of an array of 2-substituted benzimidazoles from an appropriate o-phenylenediamine and orthoesters such as orthoformate, orthoacetate and orthovalerate using ZrOCl₂. 8H₂O, at room temperature and under microwave irradiation is described. Eco-friendly, solvent-free methodology has been employed under microwave condition. Compared with the conventional method, ...