Abstract N-(2, 2, 2-Trichloroethylidene)-and N-(2, 2, 2-trichloroethyl) arenesulfonamides react with phenol, 2-chlorophenol, and 2-methylphenol in the presence of oleum or sulfuric acid to give the corresponding 4-(2, 2, 2-trichloro-1-arylsulfonylaminoethyl) phenols in good yields.
