Rhenium-catalyzed insertion of terminal acetylenes into a C-H bond of active methylene compounds.
[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.
Kuninobu
Yoichiro
Y
Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Japan. kuninobu@cc.okayama-u.ac.jp
Kawata
Atsushi
A
Takai
Kazuhiko
K