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  

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

作　　者：张晓静[1] 张淑媛[2] 郑世军[1] 王志玲[2] 李自法[1] 

机构地区：[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

出　　处：《有机化学》2005年第6期673-678,共6页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金(No.29974026);河南省自然科学基金(No.0211021100);河南省教育厅自然科学基金(No.20021500004)资助项目.

摘　　要：以4-[(4'-正烷氧基联苯基)-4-碳酰氧基]苯甲酸、二氨基二苯并-18-冠-6和二氨基二苯并-14-冠-4为中间体,通过溶液缩合反应,合成了两个系列酰胺型液晶冠醚.并用元素分析、核磁共振、红外光谱、基质辅助激光解析电离飞行时间质谱、示差扫描量热法和偏光显微镜对其进行了表征.随分子末端烷氧基碳原子数增加,化合物4I,4II,6I和6II的熔点(Tm)和液晶态的清亮点(Ti)逐渐降低,近晶相范围递增.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 diaminodibenzo-14-crown-4. Their structures and properties were characterized by elemental analysis, H-1 NMR, IR, MALDI-TOF-MS, DSC and polarizing optical microscopy with a heating stage. For compounds 4I, 4II, 6I and 6II, both melting point T-m and isotropization temperature T-i were decreased with the increase of the carbon numbers in the end alkoxy groups. However, the smectic phase temperature range was increased gradually.

关 键 词：二苯并-18-冠-6 液晶冠醚 酰胺型 合成 电离飞行时间质谱 示差扫描量热法 偏光显微镜 缩合反应 元素分析 核磁共振 红外光谱 碳原子数 烷氧基 二氨基 苯甲酸 酰氧基 联苯基 中间体 化合物 清亮点 液晶态 近晶相 溶液 分子 

分 类 号：O625.7[理学—有机化学]