title: α-Haloarylsulfonamides: Multiple Cyclization Pathways to Skeletally Diverse Benzofused Sultams.
abstract: The development of new methods to skeletally diverse sultams based on a central α-halo benzene sulfonamide building block is reported. Several salient features of this building block are utilized in multiple reaction pathways, including the Heck reaction, C- and O-arylation, Sonogashira-Pauson-Khand, Sonogashira-intramolecular hydroamination, lithiative cyclization and domino aza-Michael Heck for the generation of 5-, 6- and 7-membered benzofused bicyclic and tricyclic sultams.
authors.affiliation: Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582.
authors.forename: Dinesh Kumar
authors.initials: DK
authors.lastname: Rayabarapu
authors.forename: Aihua
authors.initials: A
authors.lastname: Zhou
authors.forename: Kyu Ok
authors.initials: KO
authors.lastname: Jeon
authors.forename: Thiwanka
authors.initials: T
authors.lastname: Samarakoon
authors.forename: Alan
authors.initials: A
authors.lastname: Rolfe
authors.forename: Hina
authors.initials: H
authors.lastname: Siddiqui
authors.forename: Paul R
authors.initials: PR
authors.lastname: Hanson