[BPy] HSO4 Acidic Ionic Liquid as a Novel, Efficient, and Environmentally Benign Catalyst for Synthesis of 1, 5??Benzodiazepines under Mild Conditions

Y Du, F Tian, W Zhao

Index: Du, Yuying; Tian, Fuli; Zhao, Wenzhi Synthetic Communications, 2006 , vol. 36, # 12 p. 1661 - 1669

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Citation Number: 36

Abstract

Abstract A novel and simple ionic liquid methodology for the synthesis of 1, 5?? benzodiazepines is described. 1??Butylpyridinium hydrogen sulphate ([BPy] HSO4), an acidic room??temperature ionic liquid, as a novel and efficient catalyst, was synthesized and used in the preparation of a series of 1, 5??benzodiazepine derivatives by the reaction of o?? phenylenediamine with chalcones under mild conditions. This method is easy, efficient, ...