化学学报 ›› 1996, Vol. 54 ›› Issue (8): 777-782. 上一篇    下一篇

研究论文

乙二胺桥联环糊精二聚体的多重识别研究

宋乐新;孟庆金;游效曾   

  1. 苏州大学化学系;南京大学配位化学研究所
  • 发布日期:1996-08-15

Study on the multiple recognition of β-cyclodextrin dimer bridged with two 1, 2-diamioethane

SONG LEXIN;MENG QINGJIN;YOU XIAOZENG   

  • Published:1996-08-15

本文合成了由两个乙二胺分子桥联的β-环糊精二聚体(1)。在碱性溶液中1与二价铜离子形成稳定的配合物(2), 根据客体分子被包合前后主、客体质子化学位移的变化研究了水溶液中三个主体分子: β-环糊精、1和2分别与对、间和邻氯苯酚及其钠盐的包合反应。通过比较主-客体包合物生成常数的大小可以推断2与有机阴离子客体之间存在多重识别作用。

关键词: 二聚体, 环糊精, 铜络合物, 乙二胺, 氯苯酚, 江苏省自然科学基金, 多重识别, 包合反应

The β-cyclodextrin dimer (1, host) bridged two 1, 2-diaminoethane was synthesized by using a regiospecific capping reagent (m-benzenedisulfonyl chloride). The research we have done indicated that the dimer and Cu^2^+ ion formed a stable coordination compound (2, host). The evidence that p-, m- or o-chlorophenol and p-, m- or o- chlorophenolate (guests) was included by β-cyclodextrin, 1 and 2 respectively, comes from ^1H NMR spectroscopic studies performed on the host-guest inclusion compounds in D2O at 22℃. Comparison of the formation constants of inclusion compounds revealed that there is a multiple recognition mechanism in existence between the host molecule (2) and the organic anion guest.

Key words: DIMER, CYCLODEXTRIN, COPPER COMPLEX, ETHANEDIAMINE

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