Synthetic communications

Hypervalent Iodine??Mediated Synthesis of 1??Aryl??4??methyl??1, 2, 4??triazolo [4, 3??a] quinoxalines by Oxidative Cyclization of Arene Carbaldehyde??3??methylquinoxalin …

R Aggarwal, G Sumran

Index: Aggarwal, Ranjana; Sumran, Garima Synthetic Communications, 2006 ,  vol. 36,  # 13  p. 1873 - 1878

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Citation Number: 13

Abstract

Abstract Arene carbaldehyde??3??methylquinoxalin??2??yl hydrazones (2) obtained by the condensation of 2??hydrazino??3??methylquinoxaline (1) with various aromatic aldehydes, on treatment with iodobenzene diacetate (IBD) in dichloromethane, undergo oxidative cyclization to exclusively afford 1??aryl??4??methyl??1, 2, 4??triazolo [4, 3??a] quinoxalines (5) in excellent yield.