Ib. Rozentsveig et al., Reaction of N-(2,2,2-trichloroethylidene)arenesulfonamides with aromatic and heterocyclic compounds, RUSS J ORG, 36(5), 2000, pp. 671-673
N-(2,2,2-Trichloroethylidene)arenesulfonamides react with aromatic and hete
rocyclic compounds in the presence of oleum to give N-[1-aryl(heteryl)-2,2,
2-trichloroethyl]arenesulfonamides.