期刊文献+

Williamson反应合成二甘醇二甲醚的研究 被引量:4

Synthesis of Diethylene Glycol Dimethyl Ether by Williamson Reaction
在线阅读 下载PDF
导出
摘要 以二乙二醇单甲醚(C5H12O3)和氢氧化钠为原料,n(NaOH):n(C5H12O3)=1.5:1.0(mol/mol),减压条件下,先合成二乙二醇单甲醚醇钠盐,然后通入CH3Cl与二乙二醇单甲醚钠盐进行Williamson反应合成二甘醇二甲醚。较为系统研究了反应温度、反应时间及n(NaOH)/n(C5H12O3)的摩尔配比等因素对反应的影响。用FTIR和NMR分析测试手段表征了产物结构。实验结果表明该反应的较优工艺条件为:n(NaOH)/n(C5H12O3)/n(CH3Cl)=1.5:1.0:1.4,反应温度为90~100℃,CH3Cl通入时间为5.0h,二甘醇二甲醚的收率可这95.0%以上。 Diethylene glycol mono-methyl ether monosodium salt was prepared from diethylene glycol mono-methyl ether (C5H12O3 ) and sodium hydroxide under vacuum pressure condition and n(NaOH)/n(C5H12O3 ) = 1.5:1.0. Then diethylene glycol dimethyl ether (DMDE) was synthesized through Williamson reaction from CH3Cl and CH3OCH2CH2OCH2CH2ONa. The influencing factors, such as reaction temperature, reacticn time and n(CH3Cl)/n(C5H12O3 ), ere were investigated. The product was identified by FT IR and NMR. The results indicated that the suitable Williamson reaetion conditions were as follows: n ( NaOH ) / n ( C5H12O3 ) / n( CH3Cl) = 1.5 : 1.0 : 1.4 ; reaction temperature, 90 - 100℃; reaetion time, 5.0 h. The yield of DMDE could reach over 95.0%.
出处 《化学世界》 CAS CSCD 北大核心 2006年第7期417-419,共3页 Chemical World
关键词 二甘醇单甲醚钠盐 二甘醇二甲 Williamson反应 合成 diethylene glycol mono-methyl ether mono-sodium salt diethylene glycol dimethyl ether Williamson reaction synthesis
  • 相关文献

参考文献6

二级参考文献19

  • 1[2]Mack Karl Ernst,MuellerWemer.甲基醚[P].DE:2900 279.1980.
  • 2[7]Giinter Scheffel,Burghausen Salzach.醚类生产过程[P].US:4 146 736,1979.
  • 3[9]Inada Shinichi,Honda Shuichi,Koga Kohji.四烷氧基硅制备[P].EP:225 137,1987.
  • 4[13]Bastenbeck Edwin W,Haydu Tuan. Composition and process for conditioning the surface of polycarbonate resins prior to metal plating[P].US:4 775 557,1988.
  • 5[15]CA,94:32190u.
  • 6杨树良 王新荣 陈志荣 等.双烷基封端聚醚的合成方法[P].CN 1 276 391 A.2000.
  • 7陈志荣 尹红 王伟松 等.甲基或乙基封端聚醚的合成方法[P].CN 1 311 265 A.2001.
  • 8Fujioka Norio,Sayama Tetsuya,Tokune Takashi.Detergent compositions for screen printing plates[P].JP 10 077 426 A2.1999.
  • 9Shiino TorH,Nobuta Kenichi,Onishi Hiroshi.Method for taking off part fixed on jig with hot—melt adhesive[P].JP 08 283 668 A2.1996.
  • 10Nabeshima Toshiichi,Kono’Fakeshi,Sato Hisami.Cleaning agents for glass molds for plastic lenses[P]. JP 08 224 740 A2.1996.

共引文献9

同被引文献30

引证文献4

二级引证文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部