CN106478513A - N-甲基-n-羟乙基咪唑醋酸盐的合成 - Google Patents

N-甲基-n-羟乙基咪唑醋酸盐的合成 Download PDF

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CN106478513A
CN106478513A CN201510535282.XA CN201510535282A CN106478513A CN 106478513 A CN106478513 A CN 106478513A CN 201510535282 A CN201510535282 A CN 201510535282A CN 106478513 A CN106478513 A CN 106478513A
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ohmim
vacuum distillation
add
distillation removes
salt
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赵世芬
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D233/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/56Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms
    • C07D233/60Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms with hydrocarbon radicals, substituted by oxygen or sulfur atoms, attached to ring nitrogen atoms

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  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

N‑甲基‑N‑羟乙基咪唑醋酸盐[C2OHmim][OAC]的合成,250mL三口瓶中加入0.5molN‑甲基咪唑和0.5mol氯乙醇混合均匀,80℃下反应24h,加入乙醚50mL萃取4次,减压蒸馏除去乙醇,得到离子液体[C2OHmim][Cl];500mL三口瓶中加入0.5mol[C2OHmim][Cl]和40mL无水乙醇溶解混合均匀,再加入无水乙醇溶解的51.80g乙酸钾,混合后在45℃下反应5h进行离子交换,抽滤出生成和未反应的盐,减压蒸馏除无水乙醇,静置后过滤生成盐,丙酮未反映物质析出剩余盐份,减压蒸馏除丙酮。得到[C2OHmim][OAC]。

Description

N-甲基-N-羟乙基咪唑醋酸盐的合成
技术领域
本发明涉及N-甲基-N-羟乙基咪唑醋酸盐的合成,属于合成化学领域。
背景技术
用疏水的离子液体和缓冲盐溶液组成两相体系,可以将底物或产物溶于离子液体中,从而减少底物或产物对酶的抑制,并起到分离的作用。例如Eckstein等用来自短乳杆菌的乙醇脱氢酶在[Bmim][(CF3SO2)2N]/缓冲盐两相体系中用底物偶联的方法催化异辛酮不对称还原反应,提高辅酶NADPH循环的效率,减少其对反应的抑制,为还原酶的应用提供可行的路线。
发明内容
本发明提供N-甲基-N-羟乙基咪唑醋酸盐[C2OHmim][OAC]的合成,250mL三口瓶中加入0.5mol N-甲基咪唑和0.5mol氯乙醇混合均匀,80℃下反应24h,加入乙醚50mL萃取4次,减压蒸馏除去乙醇,得到离子液体[C2OHmim][Cl];500mL三口瓶中加入0.5mol [C2OHmim][Cl]和40mL无水乙醇溶解混合均匀,再加入无水乙醇溶解的51.80g乙酸钾,混合后在45℃下反应5h进行离子交换,抽滤出生成和未反应的盐,减压蒸馏除无水乙醇,静置后过滤生成盐,丙酮未反映物质析出剩余盐份,减压蒸馏除丙酮。得到[C2OHmim][OAC]。
本发明的有益效果是:离子液体有比其他有机溶剂更好的溶解效果,使纤维素酶与微晶纤维素均相混合,提高的反应效率。
具体实施方式
以下对本发明的原理和特征进行描述,所举实例只用于解释本发明,并非用于限定本发明的范围。
实施例1
N-甲基-N-羟乙基咪唑醋酸盐[C2OHmim][OAC]的合成,250mL三口瓶中加入0.5mol N-甲基咪唑和0.5mol氯乙醇混合均匀,80℃下反应24h,加入乙醚50mL萃取4次,减压蒸馏除去乙醇,得到离子液体[C2OHmim][Cl];500mL三口瓶中加入0.5mol [C2OHmim][Cl]和40mL无水乙醇溶解混合均匀,再加入无水乙醇溶解的51.80g乙酸钾,混合后在45℃下反应5h进行离子交换,抽滤出生成和未反应的盐,减压蒸馏除无水乙醇,静置后过滤生成盐,丙酮未反映物质析出剩余盐份,减压蒸馏除丙酮。得到[C2OHmim][OAC]。
实施例2
N-甲基-N-羟乙基咪唑醋酸盐[C2OHmim][OAC]的合成,250mL三口瓶中加入0.4mol N-甲基咪唑和0.5mol氯乙醇混合均匀,80℃下反应24h,加入乙醚50mL萃取4次,减压蒸馏除去乙醇,得到离子液体[C2OHmim][Cl];500mL三口瓶中加入0.4mol [C2OHmim][Cl]和40mL无水乙醇溶解混合均匀,再加入无水乙醇溶解的51.80g乙酸钾,混合后在45℃下反应5h进行离子交换,抽滤出生成和未反应的盐,减压蒸馏除无水乙醇,静置后过滤生成盐,丙酮未反映物质析出剩余盐份,减压蒸馏除丙酮。得到[C2OHmim][OAC]。
实施例3
N-甲基-N-羟乙基咪唑醋酸盐[C2OHmim][OAC]的合成,250mL三口瓶中加入0.6mol N-甲基咪唑和0.6mol氯乙醇混合均匀,80℃下反应24h,加入乙醚50mL萃取4次,减压蒸馏除去乙醇,得到离子液体[C2OHmim][Cl];500mL三口瓶中加入0.6mol [C2OHmim][Cl]和40mL无水乙醇溶解混合均匀,再加入无水乙醇溶解的51.80g乙酸钾,混合后在45℃下反应5h进行离子交换,抽滤出生成和未反应的盐,减压蒸馏除无水乙醇,静置后过滤生成盐,丙酮未反映物质析出剩余盐份,减压蒸馏除丙酮。得到[C2OHmim][OAC]。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (2)

1.N-甲基-N-羟乙基咪唑醋酸盐[C2OHmim][OAC]的合成,250mL三口瓶中加入0.5mol N-甲基咪唑和0.5mol氯乙醇混合均匀,80℃下反应24h,加入乙醚50mL萃取4次,减压蒸馏除去乙醇,得到离子液体[C2OHmim][Cl];500mL三口瓶中加入0.5mol [C2OHmim][Cl]和40mL无水乙醇溶解混合均匀,再加入无水乙醇溶解的51.80g乙酸钾,混合后在45℃下反应5h进行离子交换,抽滤出生成和未反应的盐,减压蒸馏除无水乙醇,静置后过滤生成盐,丙酮未反映物质析出剩余盐份,减压蒸馏除丙酮,得到[C2OHmim][OAC]。
2.权利要求1所述N-甲基-N-羟乙基咪唑醋酸盐的合成, 反应温度为80℃下反应24h。
CN201510535282.XA 2015-08-28 2015-08-28 N-甲基-n-羟乙基咪唑醋酸盐的合成 Pending CN106478513A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912507A (zh) * 2019-03-25 2019-06-21 天津科技大学 一种咪唑类离子液体及其合成方法和应用

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912507A (zh) * 2019-03-25 2019-06-21 天津科技大学 一种咪唑类离子液体及其合成方法和应用
WO2020192014A1 (zh) * 2019-03-25 2020-10-01 天津科技大学 一种咪唑类离子液体及其合成方法和应用
CN109912507B (zh) * 2019-03-25 2022-11-15 天津科技大学 一种咪唑类离子液体及其合成方法和应用

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