Photolysis of 5-aryloxy-1-phenyl-1H-tetrazoles, and photo-Fries rearrangement of 2-aryloxybenzimidazole
Abstract
Photolysis of 5-phenoxy-1-phenyl-1H-tetrazole (I; R = H) in benzene gave 2-phenoxybenzimidazole (II), 2-(o-hydroxyphenyl)benzimidazole (III), 2-phenylbenzimidazole (IV), and biphenyl; the product (III) is derived from a photo-Fries rearrangement of (II).