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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Barton–Kellogg reaction ： ウィキペディア英語版 Barton–Kellogg reaction The Barton–Kellogg reaction is a coupling reaction between a diazo compound and a thioketone through a diazo intermediate forming an alkene. This reaction was pioneered by Hermann Staudinger, and the reaction also goes by the name Staudinger type diazo-thioketone coupling. == Reaction mechanism == In the reaction mechanism for this reaction the diazo compound is a 1,3-dipole which reacts with the thioketone in a 1,3-dipolar cycloaddition to a thiadiazoline. This intermediate is unstable and through nitrogen gas expulsion and formation of an intermediate thiocarbonyl ylide it forms a stable episulfide. Triphenylphosphine opens the three-membered ring and then forms a sulfaphosphatane in a manner similar to the Wittig reaction. In the final step triphenylphosphine sulfide is expulsed liberating the alkene. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Barton–Kellogg reaction」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.