title: Synthesis of benzo[b]thiophenes by cyclization of arylketene dithioacetal monoxides under pummerer-like conditions.
abstract: Treatment of arylketene bis(methylthio)acetal monoxide with trifluoromethanesulfonic anhydride leads to ring-closure to afford 2-methylthiobenzo[b]thiophene in high yield. The reaction is useful for synthesizing multisubstituted benzo[b]thiophenes.
authors.affiliation: Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Suguru
authors.initials: S
authors.lastname: Yoshida
authors.forename: Hideki
authors.initials: H
authors.lastname: Yorimitsu
authors.forename: Koichiro
authors.initials: K
authors.lastname: Oshima
mesh_terms: D000080:Acetals / Q000737:chemistry*; D003500:Cyclization; D013876:Thiophenes / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D000080:Acetals; D013876:Thiophenes; C088015:benzothiophene