title: Triflic acid controlled successive annelation of aromatic sulfonamides: An efficient one-pot synthesis of N-sulfonyl pyrroles, indoles and carbazoles.
abstract: A novel one-pot synthesis of N-substituted heterocycles via successive cyclization/annelation starting from primary sulfonamides is described. This process leads directly to N-sulfonyl pyrroles, indoles and carbazoles. The selection of appropriate reactant/triflic acid ratio successfully controls the formation of the desired product.
authors.affiliation: Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125-3393, USA.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Abid
authors.forename: Liliana
authors.initials: L
authors.lastname: Teixeira
authors.forename: Béla
authors.initials: B
authors.lastname: Török