Conversion of 1,3-Dicarbonyls to 1,4-Dicarbonyls

Kazuhiko Saigo Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan

Hiroshi Kurihara Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan; Department of Applied Chemistry, Faculty of Engineering, Saitama University, Shimo-ohkubo, Urawa, 338, Japan

Hisao Miura Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan; Department of Applied Chemistry, Faculty of Engineering, Saitama University, Shimo-ohkubo, Urawa, 338, Japan

Akinori Hongu Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan

Naomi Kubota Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan

Hiroyuki Nohira Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan; Department of Applied Chemistry, Faculty of Engineering, Saitama University, Shimo-ohkubo, Urawa, 338, Japan

Masaki Hasegawa Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113, Japan

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Abstract

The cycopropanation of β-trimethylsiloxy α, β-unsaturated esters and ketones, prepared from 1,3-dicarbonyl compounds, with carbenes followed by ring cleavage gave corresponding 1,4-dicarbonyl compounds in moderate yields.

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Conversion of 1,3-Dicarbonyls to 1,4-Dicarbonyls

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Conversion of 1,3-Dicarbonyls to 1,4-Dicarbonyls

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