Rhenium‐ and Manganese‐Catalyzed Insertion of Alkynes into a Carbon–Carbon Single Bond of Cyclic and Acyclic 1,3‐Dicarbonyl Compounds |
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| Authors: | Yoichiro Kuninobu Dr. Atsushi Kawata Mitsumi Nishi Salprima Yudha S. Jingjin Chen Kazuhiko Takai Prof. Dr. |
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| Affiliation: | 1. Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Kita‐ku, Okayama 700‐8530 (Japan), Fax: (+81)?86‐251‐8094;2. Current address: Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032 (China) |
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| Abstract: | 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‐Å molecular sieves instead of a catalytic amount of an isocyanide. |
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| Keywords: | alkynes C?C activation insertion manganese rhenium |
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