title: Oxidative intramolecular bromo-amination of N-alkenyl sulfonamides via umpolung of alkali metal bromides.
abstract: The oxidative intramolecular bromo-amination of various N-alkenyl sulfonamides and N-alkenoxyl sulfonamides via umpolung of alkali metal bromides occurred exo-selectively to generate cyclic bromoamides in high yields with good diastereoselectivities. This method provided the desired products without elaborating the stoichiometric amount of corresponding organic waste.
authors.affiliation: Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan. moriyama@faculty.chiba-u.jp
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Moriyama
authors.forename: Yuta
authors.initials: Y
authors.lastname: Izumisawa
authors.forename: Hideo
authors.initials: H
authors.lastname: Togo
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D000586:Amination; D001966:Bromine / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D008672:Metals, Alkali / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D013237:Stereoisomerism; D013449:Sulfonamides / Q000737:chemistry*
chemical_list: D000475:Alkenes; D008672:Metals, Alkali; D013449:Sulfonamides; D001966:Bromine