研究了硼酸与频哪醇和环己醇在离子液体1-甲基-2-吡咯烷酮硫酸氢盐([Hnmp]HSO4)、1-丁基-3-甲基咪唑四氟硼酸盐([Bmim]BF4)及1-丁基3-甲基咪唑六氟磷酸盐([Bmim]PF6)中生成2-环己氧基-4,4,5,5-四甲基-1,3,2-二氧硼烷的酯化反应.考察了不同离子液体、反应温度、反应时间和离子液体与反应物物质的量比等对反应的影响.结果表明,当n(硼酸):n(频哪醇):n(环己醇):n([Hnmp]HSO4)=1:1:1:1,反应温度为70℃和反应时间为4 h时,硼酸酯的产率为72.5%,离子液体重复使用4次,催化活性无明显降低.
参考文献
| [1] | Abbott A P,Capper G,Davies D L,et al.Quaternary Ammonium Zinc-or Tin-containing Ionic Liquids:Water Insensitive,Recyclable Catalysts for Diels-Alder Reactions[J].Green Chem,2002,4:24-26. |
| [2] | Howarth J,Dallas A.Moisture Stable Ambient Temperature Ionic Liquids:Solvents for the New Millennium.1.The Heck Reaction[J].Molecules,2000,5:851-855. |
| [3] | ZHANG Suobo,DING Mengxian,GAO Lianxun.Application of Ionic liquids in Organic Reactions[J].Chinese J Org Chan,2002,22(3):159-163(in Chinese).张所波,丁孟贤,高连勋.离子液体在有机反应中的应用[J].有机化学,2002,22(3):159-163. |
| [4] | XU Danqian,LUO Shuping,LIU Baoyou,et al.Catalytic Synthesis of Benzyl Cinnamate in Room Temperature Ionic Liquid[J].Chinese J Org Chem,2004,24(1):99-102(in Chinese).许丹倩,罗书平,刘宝友,等.室温离子液体中催化合成肉桂酸苄酯[J].有机化学,2004,24(1):99-102. |
| [5] | Zhu H P,Yang F,Tang J,et al.Br0nsted Acidic Ionic Liquid 1-Methylimidazolium Tetrafluoroborate:A Green Catalyst and Recyclable Medium for Esteriiication[J].Green Chem,2003,5:38-39. |
| [6] | Zhao G Y,Jiang T,Gao H X,et al.Mannich Reaction using Acidic Ionic Liquids as Catalysts and Solvents[J].Green Chem,2004,6:75-77. |
| [7] | Xie C,Li H L,Li L,et al.Synthesis of Plasticizer Ester using Acid-Functionalized Ionic Liquid as Catalyst[J].J Hazard Mater,2008,151:847-850. |
| [8] | Imrie C,Elago E R T,McCleland C W,et al.Esterification Reactions in Ionic Liquids.The Efficient Synthesis of Ferrocenyl Esters in the Ionic Liquids[bmim][BF4] and[bmim][PF6][J].Green Chem,2002,4:159-160. |
| [9] | Zhao Y W,Long J X,Deng F G,et al.Catalytic Amounts of Br0nsted Acidic Ionic Liquids Promoted Esterification:Study of Acidity-activity Relationship[J].Catal Commun,2009,10:732-736. |
| [10] | Swatloski R P,Holbrey J D.Rogers R D.Ionic Liquids are not Always Green:Hydrolysis of 1-Butyl-3-methylimidazolium Hexafluorophosphate[J].Green Chem,2003,5:361-363. |
| [11] | Zhang H,Xu F,Zhou X,et al.A Brφnsted Acidic Ionic Liquid as an Efficient and Reusable Catalyst System for Esterification[J].Green Chem,2001,9:1208-1211. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%