title: Rhenium-catalyzed insertion of terminal acetylenes into a C-H bond of active methylene compounds.
abstract: [reaction: see text] A rhenium complex, [ReBr(CO)(3)(thf)](2), catalyzed the intermolecular reactions of 1,3-dicarbonyl compounds with terminal acetylenes and gave the corresponding alkenyl derivatives in excellent yields. These reactions could apply to an intramolecular version and gave the corresponding cyclic compounds quantitatively.
authors.affiliation: Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Japan. kuninobu@cc.okayama-u.ac.jp
authors.forename: Yoichiro
authors.initials: Y
authors.lastname: Kuninobu
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kawata
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Takai