title: Synthesis of highly substituted N-(furan-3-ylmethylene)benzenesulfonamides by a gold(I)-catalyzed oxidation/1,2-alkynyl migration/cyclization cascade.
abstract: A variety of N-(furan-3-ylmethylene)benzenesulfonamides were obtained by a gold(I)-catalyzed cascade reaction from easily accessible starting materials. The reaction pathway involves a rarely observed 1,2-alkynyl migration onto a gold carbenoid. This observation further enriches gold carbenoid chemistry with regard to group migration.
authors.affiliation: Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221-54-4205.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Long
authors.initials: L
authors.lastname: Huang
authors.forename: Shuai
authors.initials: S
authors.lastname: Shi
authors.forename: Matthias
authors.initials: M
authors.lastname: Rudolph
authors.forename: A Stephen K
authors.initials: AS
authors.lastname: Hashmi
keywords: alkynes; furans; gold catalysis; imines; sulfonamides