应用化学 ›› 1993, Vol. 0 ›› Issue (3): 83-84.

• 研究简报 • 上一篇    下一篇

4,4′-二羟基联苯的合成

林静, 林敏, 陈立, 黄海水   

  1. 厦门大学化学系 361005 厦门
  • 收稿日期:1992-07-14 修回日期:1992-11-11 出版日期:1993-06-10 发布日期:1993-06-10

SYNTHESIS OF 4,4′-DIHYDROXYBIPHENYL

Lin Jing, Lin Min, Chen Li, Huang Haishui   

  1. Department of Chemistry, Xiamen University, 361005 Xiamen
  • Received:1992-07-14 Revised:1992-11-11 Published:1993-06-10 Online:1993-06-10

摘要: 4,4′-二羟基联苯是染料的稳定剂和高聚物中间体,也是制备烷氧基取代的联苯液晶的重要前体。4,4′-联苯二磺酸钠盐的碱熔,在催化剂存在下4,4′-二卤代联苯(X=Cl,Br)的水解,以及烷基取代的4,4′-二羟基联苯的去烷基化等已有的制备方法均需较高的温度、特殊催化剂及设备。通过卤代芳烃催化配合的制备方法,成本较高。用联苯胺盐酸盐重氮化后再水解的制备方法,则认为重氮化时盐酸中不可含有硫酸,因为联苯胺硫酸盐不易溶解。

关键词: 4,4′-二羟基联苯, 合成, 联苯胺, 重氮化

Abstract: An efficient route for 4,4'-dihydroxybiphenyl synthesis has been developed. The diazotisation reaction is carried out with 25% sulfphuric acid. It occurs readily under mild conditions in satisfactory yield but less by-products.

Key words: dihydroxybiphenyl, diazotisation synthesis