In the presence of S8 and copper(I) iodide, methyl fluorosulfonyldifluoroacetate 1 reacts with aryl halides 2 in hexamethylphosphoramide (HMPA) or N-methylpyrrolidinone (NMP) at 100–110 °C to give the corresponding trifluoromethylthiolated derivatives 3 in good yields.
Q. Chen and J. Duan, J. Chem. Soc., Chem. Commun., 1993, 918 DOI: 10.1039/C39930000918
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