title: Alpha-sulfanyl and alpha-selanyl propadienyl cations: regioselective generations and cycloadditions with thioamides and selemides controlled by MeNO2-H2O system.
abstract: Alpha-sulfanyl and alpha-selanyl propadienyl cations were easily generated by the catalytic system, scandium triflate-nitromethane-H(2)O in the presence of Bu(4)NHSO(4), to regioselectively afford the multifunctionalized thiazoles and selenazoles in high yields.
authors.affiliation: Department of Chemistry, Faculty of Education, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan. yoshimae@gifu-u.ac.jp
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Yoshimatsu
authors.forename: Teruhisa
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Arisa
authors.initials: A
authors.lastname: Sawa
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Kato
authors.forename: Genzoh
authors.initials: G
authors.lastname: Tanabe
authors.forename: Osamu
authors.initials: O
authors.lastname: Muraoka
mesh_terms: D002384:Catalysis; D002412:Cations; D003500:Cyclization; D008698:Mesylates / Q000737:chemistry; D015394:Molecular Structure; D016566:Organoselenium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012538:Scandium / Q000737:chemistry; D013237:Stereoisomerism; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D013844:Thiazoles / Q000138:chemical synthesis* / Q000737:chemistry; D013854:Thioamides / Q000737:chemistry*
chemical_list: D002412:Cations; D008698:Mesylates; D016566:Organoselenium Compounds; D013438:Sulfhydryl Compounds; D013844:Thiazoles; D013854:Thioamides; C436603:scandium triflate; D012538:Scandium