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Chin. J. Org. Chem. ›› 2005, Vol. 25 ›› Issue (06): 673-678. Previous Articles     Next Articles

Original Articles

含二苯并-18-冠-6和二苯并-14-冠-4的酰胺型液晶冠醚的合成

张晓静1，张淑媛*,2，郑世军1，王志玲2，李自法1   

  1. (1郑州大学材料工程学院 郑州450052)
    (2郑州大学化学系 郑州 450052)
  • 收稿日期:2004-06-10 修回日期:2004-12-15 发布日期:2005-05-30
  • 通讯作者: 张淑媛

Synthesis of Amido Type Liquid Crystalline Crown Ethers Containing Dibenzo-18-crown-6 and Dibenzo-14-crown-4 Units

ZHANG Xiao-Jing1, ZHANG Shu-Yuan*2, ZHENG Shi-Jun1, WANG Zhi-Ling2, LI Zi-Fa1   

  1. (1 College of Materials and Engineering, Zhengzhou University, Zhengzhou 450052)
    (2 Department of Chemistry, Zhengzhou University, Zhengzhou 450052)
  • Received:2004-06-10 Revised:2004-12-15 Published:2005-05-30
  • Contact: ZHANG Shu-Yuan

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Two series of amido type liquid crystalline crown ethers were synthesized using the intermediates of 4-[4-(n-alkoxyl)biphenyl-4-carboxyl]benzoic acid, diaminodibenzo-18-crown-6 and diamino-diben-zo-14-crown-4. Their structures and properties were characterized by elemental analysis, 1H NMR, IR, MALDI -TOF-MS, DSC and polarizing optical microscopy with a heating stage. For compounds 4I, 4II, 6I and 6II, both melting point Tm and isotropization temperature Ti were decreased with the increase of the carbon numbers in the end alkoxy groups. However, the smectic phase temperature range was increased gradually.

Key words: crown ether, amide, thermotropic liquid crystal, synthesis