title: Rhenium-catalyzed regio- and stereoselective synthesis of γ-thio-α,β-unsaturated ketones via insertion of terminal alkynes into the C-S bond.
abstract: The reaction of α-thioketones and alkynes in the presence of a rhenium catalyst, [HRe(CO)(4)](n), gave γ-thio-α,β-unsaturated ketones in excellent yields. The alkynes were inserted into the carbon-sulfur bond of the α-thioketones, and isomerization of a double bond provided the products with high regio- and stereoselectivities. This reaction also proceeded in an intramolecular fashion.
authors.affiliation: Division of Chemistry and Biotechnology, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
authors.forename: Mitsumi
authors.initials: M
authors.lastname: Nishi
authors.forename: Yoichiro
authors.initials: Y
authors.lastname: Kuninobu
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Takai