Hydroarylation of (E)-5-(2-Arylethenyl)-2-methyl-2H-tetrazoles under Superelectrophilic Activation

Abstract

The reaction of 5-(2-arylethenyl)-2-methyl-2<i>H</i>-tetrazoles with arenes (benzene, xylenes, <i>tert</i>-butylbenzene, anisole, veratrole, 1,2-dichlorobenzene) under conditions of superelectrophilic activation under the action of Brønsted superacids (CF₃SO₃H, FSO₃H) or strong Lewis acids (AlCl₃, AlBr₃) leads regioselectively to the products of hydroarylation of the carbon–carbon double bond, viz., 5-(2,2-diarylethenyl)-2-methyl-2<i>H</i>-tetazoles, in yields of up to 95%.