Photochemical [3+2] Cycloaddition of 2'-Vinyl-2H-1,4-benzothiazin-3(4H)-one-2-spirocyclopropanes Catalyzed by Diphenyl Dichalcogenides

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概要

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• 2'-Vinyl-2H-1,4-benzothiazin-3(4H)-one-2-spirocyclopropanes (1) were irradiated with a tungsten lamp at room temperature in the presence of a catalytic amount of diphenyl dichalcogenide to provide 1,2-dioxolane derivatives (3) in good yields. Diphenyl diselenide was more effective than diphenyl disulfide as a radical source. The photochemical [3+2] cycloaddition of 1b with electron-deficient alkenes proceeded smoothly under reflux in benzene to give spiro-cyclopentanes (5). Spiro-cyclopentenes (6) were formed by the photochemical [3+2] cycloaddition of 1b with alkynes.

• 公益社団法人日本薬学会の論文
• 1998-06-15

著者

• 清水 博

  東大

• 清水 博

  東京大学・薬学部

• 清水 博

  東大・薬

• 清水 博

  東大薬

• Iwama Tetsuo

  Gifu Pharmaceutical University

• KATAOKA Tadashi

  Gifu Pharmaceutical University

• MATSUMOTO Harutoshi

  Gifu Pharmaceutical University

• SHIMIZU Hiroshi

  Gifu Pharmaceutical University

• Iwamura T

  Gifu Pharmaceutical Univ. Gifu Jpn

• Iwama T

  Gifu Pharmaceutical University

• ITO Taizo

  Gifu Pharmaceutical University

• Matsumoto H

  Yamanouchi Pharmaceutical Co. Ltd. Ibaraki Jpn

• Kataoka T

  Gifu Pharmaceutical Univ. Gifu Jpn

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