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The Newman–Kwart thermal rearrangement of two 2,4-disubstituted O-arylthiocarbamates, prepared from the corresponding phenols, is reported. Clean conversion to the S-arylthiocarbamates in high yields was observed. The rearrangement appears to be facilitated by the presence of electron-withdrawing substituents in the 2- and 4-positions of the aromatic ring.
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