Treatment of azoxybenzene with p-toluenesulfonic acid in acetic anhydride gave tosylates of 4-and 2-(phenylazo) phenols, and the corresponding acetates as by-product, besides azobenzene. However, a similar reaction of 4, 4′-difluoroazoxybenzene gave 2-tosyloxy-4, 4′-difluoroazobenzene as rearrangement product, besides 4-fluorophenyl tosylate and 4- fluorophenyl acetate. Meanwhile, the reaction of 4, 4′-diacetoxyazoxybenzene afforded ...
