イワクラ イズミ   Iwakura Izumi
  岩倉 いずみ
   所属   神奈川大学  工学部 化学教室
    神奈川大学大学院  工学研究科 工学専攻(応用化学領域)
   職種   教授
言語種別 英語
発行・発表の年月 2010/04
形態種別 学術雑誌
査読 査読あり
標題 Direct Observation of the Molecular Structural Changes during the Claisen Rearrangement Including the Transition State
執筆形態 共著
掲載誌名 Chemistry Letters
掲載区分国外
出版社・発行元 The Chemical Society of Japan
巻・号・頁 39(4),pp.374-375
著者・共著者 Izumi Iwakura, Atsushi Yabushita, Takayoshi Kobayashi
概要 The detailed processes in the Claisen rearrangement were observed. The process was vibrationally excited in the electronic ground state by a stimulated Raman process using a 5-fs pulse. The Claisen rearrangement was found to follow a three-step pathway. At first, the C4-O bond is weakened to generate a bis-allyl-like intermediate. Next, the formation of a weak C1-C6 bond results in the generation of an aromatic-like intermediate. Finally, C4-O breaking and C1-C6 formation occur simultaneously to generate the product.