金合欢醇羟基的溴取代反应研究  

RESEARCH ON BROMO-SUBSTITUTION OF HYDROXYL GROUP OF FARNESOL

作　　者：孙震[1] 赵振东[1] 李冬梅[1] 刘先章[1] 

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏南京210042

出　　处：《林产化学与工业》2004年第B08期69-72,共4页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目 (39970 6 0 0 )

摘　　要：通过使用自行合成的高效溴取代试剂二溴三苯基膦 ,成功地从金合欢醇合成了金合欢基溴 ,并用化学分析的方法测定其含量。主要反应条件为 :苯作溶剂 ,室温反应 3h。因为二溴三苯基膦遇水极易分解 ,因此反应中使用的溶剂需要进行干燥处理。溴化反应时为了除去反应中生成的HBr ,需要加入吡啶使之成盐析出。反应完毕后 ,通过蒸除溶剂然后加入正己烷溶出金合欢基溴的方法除去反应中生成的三苯基氧化膦。本合成反应具有操作简单和得率较高的特点 。In this paper, farnesyl bromide is successfully synthesized by using the highly efficient halide-(replacement) reagent Ph_3PBr_2 prepared in the lab, and the content of the bromide is analyzed with a chemical (analytical) method. Typical reaction conditions are: room temperature and 3 h in benzene as a solvent. Since Ph_3PBr_2 is easy to be decomposed in the presence of water, the solvent used in the reaction should be dried in advance. To get rid of HBr resulted during the bromo-substitution, pyridine was added to salt it out. The (solution) was distilled after the reaction was completed to remove the solvent, then hexane was added to resolve the bromide, and thus (Ph_3PO) produced during the reaction could be removed. The reaction is easy to operate, with high yield, can be applied to other terpenols as well.

关 键 词：金合欢基溴 溴取代反应 二溴三苯基膦 含量测定 反应条件 萜烯醇类化合物 金合欢醇 香料 

分 类 号：TQ351.471[化学工程] TQ655