苯并噁唑类液晶的合成  

Synthesis of Benzoxazoles Liquid Crystals

作　　者：张建立[1,2] 尚洪勇[1,2] 梁晓[1,2] 刘鑫勤[1] 

机构地区：[1]石家庄永生华清液晶有限公司,河北石家庄050091 [2]清华大学化学系,北京100084

出　　处：《液晶与显示》2009年第4期482-486,共5页Chinese Journal of Liquid Crystals and Displays

基　　金：国家"863"计划资助项目(No.2008AA03A304)

摘　　要：自主设计了苯并噁唑类液晶的合成路线。采用对烷基苯酚为起始原料,合成制得对烷基邻硝基苯酚,还原得到对烷基邻氨基苯酚,再与烷基苯氰在多聚磷酸脱水剂存在下合环得到2,5-取代苯并噁唑类液晶化合物,并在此基础上进一步拓展,合成出了系列化合物。标定了产品结构,测定了相关液晶参数,对液晶材料的性能进行了研究。在所研究的液晶化合物中,有的品种已实现了量产。A series of 2-amino-4-alkylphenol were synthesized by reduction of 4-alkyl-2-nitrophenol which was synthesized from alkyl-phenol. In the presence of polyphoshoric acid, 2-amino-4-alkylphenol reacted with alkyl benzonirtrile to yield 2,5-disubstuted benzoxazole, a series of liquid crystalline com- pounds were synthesized. The structures of products were calibrated, the parameters of liquid crystal were measured and the performances of liquid crystal were studied. Some of the products achieved mass production, good effect was obtained.

关 键 词：苯并噁唑 液晶 多聚磷酸 

分 类 号：O753.2[理学—晶体学]