详细信息
含氟反式环己基联苯液晶的合成
Synthesis of Fluorinated Transcyclohexylbiphenyl Liquid Crystals Catalyzed by Palladium Complexes
文献类型:期刊文献
中文题名:含氟反式环己基联苯液晶的合成
英文题名:Synthesis of Fluorinated Transcyclohexylbiphenyl Liquid Crystals Catalyzed by Palladium Complexes
作者:黄梅[1];陈建华[1];陶晓春[2];魏明旺[1];沈冬[1]
机构:[1]华东理工大学化学物理研究室,上海200237;[2]华东理工大学金属有机化学研究室,上海200237
年份:2007
卷号:22
期号:2
起止页码:124
中文期刊名:液晶与显示
外文期刊名:Chinese Journal of Liquid Crystals and Displays
收录:CSTPCD;;Scopus;北大核心:【北大核心2004】;CSCD:【CSCD_E2011_2012】;
基金:教育部优秀青年教师资助计划项目
语种:中文
中文关键词:含氟液晶;合成;Suzuki偶联反应
外文关键词:fluorinated liquid crystals; synthesis; Suzuki cross-coupling reaction
摘要:分别以PdCl2或Pd2(dba)3(CHCl3)作催化剂,K3PO4作碱,吡啶为溶剂,通过Suzuki交叉偶联反应合成了3个含氟反式环己基联苯液晶。与PdCl2相比,Pd2(dba)3(CHCl3)催化效力高,用量少(摩尔分数为0.25%),能有效催化多氟-反式环己基联苯类液晶的合成,纯产品产率达80%~67%,该反应体系简单、高效,催化剂合成储存方便,经济实用,具有较高的工业应用前景。
Three pure fluorinated trans-cyclohexylbiphenyl liquid crystals were prepared by Suzuki crosscoupling reaction using PdCl2 or Pd2 (dba)3 (CHCl3) as catalyst, K3PO4 as base and pyridine as solvent. Compared with PdCl2, Pd2 (dba)3 (CHCl3) catalyzed the reaction more effectively, 80 %-67 % product yields were obtained when 0.25 % mole fraction Pdz (dba)3 (CHCl3) was used, system is simple and efficient, has potential for application in chemical industry. reaction
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