title: Ferric chloride-catalyzed C-N bond cleavage for the cyclization of arylallenes leading to polysubstituted indenes.
abstract: A range of arylallenes undergo carbocation-initiated cyclization reaction with N-benzylic and N-allylic sulfonamides in the presence of 10 mol% ferric chloride to give structurally diverse polysubstituted indenes in good yields with extremely high regioselectivity.
authors.affiliation: Joint Laboratory of Green Synthetic Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: Cong-Rong
authors.initials: CR
authors.lastname: Liu
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Wang
authors.forename: Qing-Biao
authors.initials: QB
authors.lastname: Qi
authors.forename: Shi-Kai
authors.initials: SK
authors.lastname: Tian