Aryltriazeness are generally crystalline compounds which are stable to air, light, and basic conditions9 and have been used for the synthesis of aryl iodides by replacement of the triazene moiety with iodine.'0,''Although eleven thioglycolic acids could be synthesized by this method, the preparation of carboxyphenylthioglycolic acid from [2-~ arboxyphenyl) azo] pyrrolidine failed in this study. The product of this reaction was salicylic acid, possibly ...