2,3-Dichloro-5,6-dicyano-1,4-benzoquinone, a Mild Catalyst for the Formation of Carbon-Nitrogen Bonds

Article abstract of DOI:10.1016/0040-4020(95)00252-4

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.