4′-正丁基-4-氰基联苯液晶的合成

Synthesis of 4'-n-butyl-4-cyanobiphenyl liquid crystal

对溴苯胺重氮化后与苯偶联,经 Friedel-Crafts 酰化,用 Wolff-Kishner-Huang Minglong 法还原再氰化等合成了4'-正丁基-4-氰基联苯液晶。

In this paper,4'-n-butyl-4-cyanobiphenylliquid crystal was synthesized by a new method.The starting material 4-bromoaniline was diazo-tized and then reacted with benzene to form 4-bromobiphenyl After Friedel-Crafts acylation,Wolff-Kishner-Huang Minglong reaction and cy-anation,4'-n-butyl-cyanobiphenyl liquid crystalwas obtained.