摘要
根据化学平衡理论，提出了还原剂A／无水乙醇体系二次还原精制龙脑的工艺，并且考察了还原剂A用量和溶剂用量对樟脑二次还原的影响。经二次还原，樟脑转化率及龙脑产率都得到了较大提高。在本文的最佳反应条件下，还原剂A／无水乙醇体系二次还原所得的最高樟脑转化率和龙脑产率分别为93％和81％。二次还原法具有反应时间短，反应条件温和，产物收率和产物纯度高，经济效益高，绿色环保等优点。
Accorded to the chemical equilibrium theory, the technology of secondary reduction of camphor to refine D-borneol in reduetant A/ethanol system was presented, and the effects of the quantity of A and solvent on the secondary reduction reaction was studied. The conversion of camphor and the yield of D-borneol were remarkably increased after secondary reduction. The highest conversion of camphor and the yield of D-borneol respectively was 93% and 81% under the optimum reaction conditions. The technology of secondary reduction to refine D-borneol had shorter reaction time, milder reaction condition, higher yield and high product purity.
出处
《化工技术与开发》
CAS
2008年第1期6-8,33,共4页
Technology & Development of Chemical Industry
基金
国务院侨办科研项目（05QZR02）资助
关键词
右旋龙脑
二次还原
樟脑
不对称还原
camphor
D-borneol
secondary reduction
asymmetric reduction
