第 45 卷第 6 期Vol. 45 No. 6
2015 年 12 月Dec 2015

所属栏目:医药及中间体

3-甲基苯丙酮的合成方法研究
黄朋勉,唐文娟,吴 莹,黄子杰,易 霞,周智慧 (长沙理工大学 化学与生物工程学院,湖南 长沙 410114)
摘 要:以溴乙烷和镁屑为原料,四氢呋喃为溶剂制备乙基溴化镁格氏试剂。格氏试剂和间甲基苯甲醛反应得到3′-甲基苯丙醇,随后采用氯铬酸吡啶鎓盐(Pcc)氧化得到产品3′-甲基苯丙酮。收率为72%,纯度为98%(HPLC)。优化反应条件为:n(溴乙烷)∶n(镁屑)∶n(间甲基苯甲醛)= 1.2∶1.1∶1.0,氧化反应温度为40℃。
关键词:格氏试剂;间甲基苯甲醛;3′-甲基苯丙酮;Pcc
中图分类号:O625.42  文献标识码:A  文章编号:1009-9212(2015)06-0023-03
Synthesis of 3-Methypropiophenone
HUANG Peng-mian, TANG Wen-juan, WU Ying, HUANG Zi-jie, YI Xia, ZHOU Zhi-hui (Changsha University of Science & Technology, Changsha 410114, China)
Abstract:Grignard reagent-ethyl magnesium bromide was prepared using bromoethane and magnesium in tetrahydrofuran. 1-(3-Methyl-phenyl)-propan-1-ol was obtained by the reaction of ethyl magnesium bromide with m-tolualdehyde. 3-Methylpropiophenone was obtained from the oxidation reaction of 1-(3-methyl-phenyl)-propan-1-ol using pyridinium chlorochromate (PCC) with a yield of 72% and purity of 98% (HPLC). The optimal reaction conditions were as following: the molar ratio of bromoethane, magnesium and m-tolualdehyde was of 1.2:1.1:1.0, and the oxidation reaction temperature was of 40℃.
Key words:Grignard reagent; m-tolualdehyde; 3-methylpropiophenone; Pcc
基金项目:湖南省教育厅项目资助(15C0022)。
作者简介:黄朋勉(1972-),男,湖南靖州人,副教授,博士,主要从事药物及中间体的研究(E-mail:huangpengmian@126.com)。
收稿日期:2015-10-21