Rhenium- and manganese-catalyzed insertion of alkynes into a carbon-carbon single bond of cyclic and acyclic 1,3-dicarbonyl compounds.
Treatment of alkynes with cyclic and acyclic 1,3-dicarbonyl compounds in the presence of a catalytic amount of a rhenium or manganese complex gives ring-expanded and carbon-chain extension products, respectively. In these reactions, alkynes insert into a non-strained carbon-carbon single bond of 1,3-dicarbonyl compounds. The ring-expansion reaction is also promoted by the addition of 4-A molecular sieves instead of a catalytic amount of an isocyanide.
Kuninobu
Yoichiro
Y
Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Kita-ku, Okayama 700-8530, Japan. kuninobu@cc.okayama-u.ac.jp
Kawata
Atsushi
A
Nishi
Mitsumi
M
Yudha
Salprima
S
Chen
Jingjin
J
Takai
Kazuhiko
K