Abstract
It was e1ucidated that 2-(o-aminophenylthio)-3, 5-dichloropyridine (III), 4-(o-aminophenylthio)-3-nitropyridine (VIII), and their acyl (formyl, acetyl) derivatives undergo rearrangement to the corresponding disulfides (V and IX) by catalytic action of alkyl halide as well as ethanolic hydrogen chloride. On the basis of the spectroscopic data and experimental results, the mechanism of this rearrangement was discussed.
