Selective Transport of Alkali Metal Cations by New Type of Amide or Amino Bis (Crown Ether) s

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  • MATSUSHIMA Kenji
    Department of Applied Chemistry, Faculty of Science and Technology, Kinki University
  • IKEDA Isao
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • KOHMOTO Keiji
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • NAKATSUJI Yohji
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • OKAHARA Mitsuo
    Department of Applied Chemistry, Faculty of Engineering, Osaka University

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Other Title
  • 新規アミド及びアミノ型ビスクラウンエーテルによるアルカリ金属カチオンの選択輸送
  • シンキ アミド オヨビ アミノガタ ビスクラウンエーテル ニ ヨル アルカリ

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Amide-type bis (crown ether) s 3 and 4 were obtained from the reaction of aminomethyl crown ether 1 or morpholino crown ether 2 with alkylmalonyl dichloride. Amino-type bis (crown ether) s 5 and 6 were prepared by reduction of amides 3 and 4, respectively. Amide-type ligand 3 having two 15-crown-5 rings was highly selective toward potassium cation compared to sodium ion in the stability constant for complexation and transport through a liquid membrane. Amide 4 and amine ligands 5 and 6 were less selective than 3. The relationship between the molecular structures of crown ethers and complexing and transport properties is discussed.

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