キハラ ノブヒロ   Kihara Nobuhiro
  木原 伸浩
   所属   神奈川大学  理学部 化学科
   職種   教授
言語種別 英語
発行・発表の年月 2007/02
形態種別 学術雑誌
査読 査読あり
標題 Effect of Steric Barrier on the Shuttling of Rotaxane Having Crown Ether Wheel
執筆形態 共著
掲載誌名 Chem. Lett.
巻・号・頁 36(2),pp.208-209
著者・共著者 Nobuhiro Kihara, Yoshifumi Koike, and Toshikazu Takata
概要 Rotaxanes comprising dibenzo-24-crown-8 and a sym. ammonium salt were desymmetrized by N-acylation. The shuttling behavior was investigated in detail. For the N,N-di-n-alkyl-type axle, the propionyl group was necessary to stop shuttling, whereas the acetyl group was bulky enough for the N,N-dibenzyl-type axle. According to the ΔS (activation) term of the shuttling, the N-formyl and N-acetyl rotaxanes with an N,N-di-n-alkyl-type axle showed similar shuttling frequencies at room temp.
DOI 10.1246/cl.2007.208
ISSN 0366-7022