文献类型：期刊文献

中文题名：2,3,4,6-四-氧-乙酰基-1-溴-1-氯-β-D-吡喃糖的超声波合成

英文题名：Ultrasound Synthesis of 2,3,4,6-Tetra-O-acetyl-1-chloro-1-bromo-β-D-pyranose

作者：周声蓉[1];何立[1];Amadow Woppa Diallo[1];徐庆[1];陈国荣[1]

机构：[1]华东理工大学精细化工研究所,上海200237

年份：2003

卷号：29

期号：6

起止页码：604

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(20176010)

语种：中文

中文关键词：吡喃糖;超声波;自由基反应;超声溴化

外文关键词：pyranose; ultrasound; radical reaction; ultrasonic bromination

摘要：应用超声技术,在超声波辐射下,合成了若干吡喃糖溴化物及偕双卤代吡喃糖。结果表明,超声波频率、功率对反应收率、速率及选择性均有很大影响。在功率不变时,随着频率的增大,反应速率和收率也增大,选择性提高;在频率不变时,随着功率的增大,反应的收率增大,选择性提高。借助电子自旋共振(ESR)技术,证实此类超声波溴化反应是自由基反应。
1,2,3,4,6PentaOacetylβDpyranosyl bromide and 2,3,4,6tetraOacetyl1chloro1bromoβDpyranose were synthesized by ultrasound technique. Result showed that with the different power and different frequency of ultrasonic wave, the changes of power and frequency of ultrasonic wave have a deep impact on the reaction rate, yield and selectivity. At the same power, the reaction rate and yield increased and good selectivity attained with the increase of frequency. With the same frequency, the reaction yield increased and good selectivity resulted with the increasing of power. ESR technique proved that the reaction of these pyranosyl bromides is a radical reaction.