Ev. Rudyakova et al., Alkylation of phenols with N-(2,2,2-trichloroethylidene)- and N-(2,2,2-trichloroethyl)arenesulfonamides, RUSS J ORG, 37(1), 2001, pp. 96-100
N-(2,2,2-Trichloroethylidene)- and N-(2,2,2-trichloroethyl)arenesulfonamide
s 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-aryls
ulfonylaminoethyl)phenols in good yields.