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Title: A mild, efficient and one-pot synthesis of 2-substituted benzimidazoles by ZrOCl₂.8H₂O catalyzed ring closure reaction
Authors: Reddy, Ch Sanjeeva
Nagaraj, A
Keywords: ZrOCl₂.8H₂O
Microwave irradiation
Issue Date: Jul-2008
Publisher: CSIR
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, microwave irradiation method has the advantages of excellent yields (81-93%) and shorter reaction time (5-10 min).
Page(s): 1154-1159
ISSN: 0376-4699
Source:IJC-B Vol.47B(07) [July 2008]

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