Tetrahedron

2, 3-Dichloro-5, 6-dicyano-1, 4-benzoquinone, a mild catalyst for the formation of carbon-nitrogen bonds

JJV Eynde, F Delfosse, P Lor, Y Van Haverbeke

Index: Eynde, Jean Jacques Vanden; Delfosse, Florence; Lor, Pascal; Haverbeke, Yves Van Tetrahedron, 1995 , vol. 51, # 20 p. 5813 - 5818

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Citation Number: 80

Abstract

2, 3-Dichloro-5, 6-dicyano-1, 4-benzoquinone (DDQ) catalyzes the preparation of N- tetrahydropyranylbenzazoles, 2-substituted 1, 3-diphenylimidazolidines, and N- (arylmethylene) benzene-1, 2-diamines. In the latter case, use of one equivalent of DDQ provides a novel one-pot method for the synthesis of 1H-benzimidazoles.