CN108147937A - 一种季铵盐的制备方法 - Google Patents

一种季铵盐的制备方法 Download PDF

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CN108147937A
CN108147937A CN201711393732.1A CN201711393732A CN108147937A CN 108147937 A CN108147937 A CN 108147937A CN 201711393732 A CN201711393732 A CN 201711393732A CN 108147937 A CN108147937 A CN 108147937A
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quaternary ammonium
ammonium salt
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林富荣
周海军
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Changzhou University
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    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/04Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
    • C07C209/14Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups
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    • C07D207/02Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/30Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
    • C07D207/32Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
    • C07D207/323Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atoms
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    • C07ORGANIC CHEMISTRY
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    • 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
    • C07D233/58Heterocyclic 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 only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring nitrogen atoms
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    • C07D295/02Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements
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    • C07D295/02Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements
    • C07D295/037Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements with quaternary ring nitrogen atoms

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Abstract

本发明提供一种季铵盐的制备方法,其制备步骤包括:(1)胺与酸反应,生成胺盐;(2)胺盐与碳酸烷基酯在有机溶剂中反应,生成季铵盐;(3)将步骤(2)中产物用结晶的方法提纯,得到相应的季铵盐。该法反应过程中没有卤化物参与,可使季铵盐中卤素离子含量小于5ppm,由此季铵盐配成的超级电容器电解质,具有优良的循环特性。

Description

一种季铵盐的制备方法
技术领域
本发明涉及一种季铵盐的制备方法,具体来说是一种由仲胺,或叔胺与酸成盐后,再与碳酸烷基酯反应制备卤素离子含量低的季铵盐的方法。
背景技术
超级电容器,又叫做双层电容器(Ectrochemical Double-Layer Capacitors,EDLCs),比传统静电电容器有更高的能量密度,比二次电池有更大的功率密度,是介于普通电池与传统静电电容器之间的新型能量储存器件。由于超级电容器具有功率密度高,循环寿命长,充放电时间短和使用温度范围宽等优点,具有广阔的应用前景,成为了研究的热点。
电解质是超级电容器的重要组成部分,对超级电容器的性能有很大的影响。季铵盐,特别是甲基三乙基四氟硼酸铵、N,N-二甲基吡咯四氟硼酸铵、1,3-二甲基咪唑四氟硼酸铵,在极性有机溶剂中有良好的溶解性,具有较高的电导率;几乎没有蒸汽压,可以消除因挥发对环境产生的污染;工作温度范围宽、防爆性能和阻燃性能较好,具有较高的安全性能等优点,广泛用作超级电容器电解质。
用作超级电容器电解质的氟硼酸、六氟磷酸类季铵盐,如甲基三乙基四氟硼酸铵、N,N-二甲基吡咯四氟硼酸铵、1,3-二甲基咪唑四氟硼酸铵,其合成方法有以下三种:(1)方法一,是先将卤代季铵盐转化成季铵碱,再与相应的酸中和反应,得到目标产品。专利CN104892433 A公布了一种甲基三乙基四氟硼酸铵的制备方法,是先制备甲基三乙基氯化铵,再与氢氧化钠或氢氧化钾反应转化成甲基三乙基氢氧化物,再与四氟硼酸反应,得到甲基三乙基四氟硼酸铵。该合成方法有卤化物参与,卤素离子不易去除干净,会影响超级电容器的电化学性能。为了尽量脱除卤素离子,专利JP 2011192963 A利用氧化银与甲基三乙基氯化铵在水溶液中反应,制备甲基三乙基氢氧化物,再与四氟硼酸反应,得到甲基三乙基四氟硼酸铵。虽然此方法可以几乎完全去除卤素离子,但成本太高。(2)方法二,以硫酸烷基酯为烷基化试剂与胺反应制备硫酸类季铵盐,再与相应的酸反应,得到目标产品。专利CN101328128 A公布了将二乙胺或三乙胺与硫酸二甲酯季铵化反应,生成硫酸类季铵盐,再与六氟磷酸反应得到相应的产品。该方法虽然合成工艺简单,收率高,并且没有卤素离子的引入,但硫酸烷基酯毒性大,对环境污染严重,所以限制了其使用。(3)方法三,以碳酸烷基酯为烷基化试剂与胺反应制备碳酸类季铵盐,再与相应的酸反应,得到目标产品。专利CN102584602 A公布了将正三丙胺或哌嗪与碳酸二甲酯季铵化反应,生成碳酸类季铵盐,再与氟硼酸或六氟磷酸反应得到相应的产品。该方法虽然没有卤素离子的引入,但是碳酸烷基酯的活性低,反应需要在耐压釜中进行,工艺条件复杂,增加了生产成本。
发明内容
本发明的目的在于克服上述四氟硼酸、六氟磷酸类季铵盐合成方法的不足,提供一种季铵盐的制备方法。
本发明目的的实现,步骤如下:
(1)胺与酸反应,生成胺盐;
(2)胺盐与碳酸烷基酯在有机溶剂中反应,生成季铵盐;
(3)将步骤(2)中产物用结晶的方法提纯,得到相应的季铵盐。
所述步骤(1)中,酸为四氟硼酸、六氟磷酸中的一种。
所述步骤(1)中,胺为以下结构的一种:
其中:R1代表氢或C1~C4烷基;R2、R3代表C1~C4烷基。
所述步骤(1)中,胺与酸的摩尔比为1.0:1.0~1.0:1.2。
所述步骤(2)中,碳酸烷基酯为碳酸二甲酯、碳酸二乙酯中的一种。
所述步骤(2)中,有机溶剂为碳酸烷基酯对应的醇、DMF、DMSO中的一种。
所述步骤(2)中,胺盐与碳酸烷基酯的摩尔比为1.0:2.0~1.0:10,反应温度为70℃~180℃,反应时间为5h~14h。
有益效果:该法反应过程中没有卤化物参与,可使季铵盐中卤素离子含量小于5ppm,由此季铵盐配成的超级电容器电解质,具有优良的循环特性。
具体实施方法
以下结合具体实施例对本申请进行示例性说明和进一步理解,但实施例仅作为例子给出,不视为本发明的全部技术方案,不是对本发明总的技术方案的限定。凡具有相同或相似技术特征,简单改变或替换的,均属本发明保护范围。
实施例1
将三乙胺(10.10g,0.1mol)置于三口烧瓶中,逐滴加入40%的四氟硼酸水溶液(26.34g,0.12mol),反应结束后,加入30mL甲苯共沸脱水,得到20.86g三乙胺四氟硼酸盐。
将三乙胺四氟硼酸盐20.86g,碳酸二甲酯(27.02g,0.3mol)和无水甲醇30mL加入到高压反应釜中,搅拌,150℃左右反应10h。反应结束后,冷却结晶,抽滤,得到甲基三乙基四氟硼酸铵粗品19.77g,产率97.4%。用40mL无水甲醇重结晶,得到16.87g高纯甲基三乙基四氟硼酸铵,产率83.2%,产率以三乙胺的量为基准计算,滤液中还有产品。
产物进行核磁氢谱和碳谱测试,结果如下:
1H-NMR(D2O)δ,ppm:1.30~1.34(t,9H,N-CH2-CH3),2.95~2.99(s,3H,N-CH3),3.21~3.28(q,6H,N-CH2)。
13C-NMR(D2O):
产品经离子色谱检测,并与由甲基三乙基氯化铵与四氟硼酸反应制备的样品对比,其中前者记为样品1,对比样品记为样品2,结果如下。
将制备的甲基三乙基四氟硼酸铵与乙腈配制成电解液,在电化学工作站上进行循环伏安测试参见附图1,曲线接近矩形,其电化学性能较好。
实施例2
将N-甲基吡咯烷(42.57g,0.5mol)置于三口烧瓶中,逐滴加入60%六氟磷酸水溶液(145.97g,0.6mol),反应结束后,加入150mL甲苯共沸脱水,得到135.14g N-甲基吡咯六氟磷酸盐。
将N-甲基吡咯六氟磷酸盐135.14g,碳酸二甲酯(90.07g,1mol),甲醇80mL加入到高压反应釜中,搅拌,145℃左右反应9h。反应结束后,冷却结晶,抽滤,得到120.16g N,N-二甲基吡咯六氟磷酸铵粗品,产率98.1%。用100mL无水甲醇重结晶,得到103.01高纯N,N-二甲基吡咯六氟磷酸铵,产率84.1%,产率以N-甲基吡咯烷的量为基准计算,滤液中还有产品。
产物进行核磁氢谱和碳谱测试,结果如下:
1H-NMR(D2O)δ,ppm:2.28~2.32(t,4H,CH2),3.21~3.28(s,6H,N-CH3),3.58~3.65(q,4H,N-CH2)。
13C-NMR(D2O):
产品经离子色谱检测,并与由N,N-二甲基吡咯氯化铵与六氟磷酸反应制备的样品对比,其中前者记为样品3,对比样品记为样品4,结果如下。
将制备的N,N-二甲基吡咯六氟磷酸铵与乙腈配制成电解液,在电化学工作站上进行循环伏安测试参见附图2,曲线接近矩形,其电化学性能较好。
实施例3
将1-甲基咪唑(82.10g,1mol)置于三口烧瓶中,逐滴加入40%的四氟硼酸水溶液(263.43g,1.2mol),反应结束后,加入200mL甲苯共沸脱水,得到192.46g N-甲基吡咯四氟硼酸盐。
将1-甲基咪唑四氟硼酸盐192.46g,碳酸二乙酯(236.26g,2mol),甲醇160mL加入到高压反应釜中,搅拌,135℃左右反应8h。反应结束后,冷却结晶,抽滤,得194.94g 1-甲基-3-乙基咪唑四氟硼酸铵粗品,产率98.5%。用250mL无水甲醇重结晶,得到168.82g高纯1-甲基-3-乙基咪唑四氟硼酸铵,产率85.3%,产率以1-甲基咪唑的量为基准计算,滤液中还有产品。
产物进行核磁氢谱和碳谱测试,结果如下:
1H-NMR(D2O)δ,ppm:0.92~0.98(s,3H,CH3),1.52~1.63(s,2H,CH2),3.92~3.97(s,3H,CH3),7.44~7.61(s,2H,CH),8.64~8.73(s,1H,CH)。
13C-NMR(D2O):
产品经离子色谱检测,并与由1-甲基-3-乙基咪唑氯化铵与四氟硼酸反应制备的样品对比,其中前者记为样品5,对比样品记为样品6,结果如下。
将制备的1-甲基-3-乙基咪唑四氟硼酸铵与乙腈配制成电解液,在电化学工作站上进行循环伏安测试参见附图3,曲线接近矩形,其电化学性能较好。
实施例4
将N-乙基哌啶(41.05g,0.5mol)置于三口烧瓶中,逐滴加入60%的六氟磷酸水溶液(145.97g,0.6mol),反应结束后,加入150mL甲苯共沸脱水,得到134.57g N-乙基哌啶六氟磷酸盐。
将N-乙基哌啶六氟磷酸盐134.57g,碳酸二乙酯(118.13g,1mol),甲醇140mL加入到高压反应釜中,搅拌,140℃左右反应10h。反应结束后,冷却结晶,抽滤,得281.15g N,N-二乙基哌啶六氟磷酸铵粗品,产率97.9%。用200mL无水甲醇重结晶,得到240.94g高纯N,N-二乙基哌啶六氟磷酸铵,产率83.9%,产率以N-乙基哌啶的量为基准计算,滤液中还有产品。
产物进行核磁氢谱和碳谱测试,结果如下:
1H-NMR(D2O)δ,ppm:1.37~1.45(s,2H,CH2),1.81~1.89(s,4H,CH2),3.28~3.36(s,4H,CH2),3.42~3.51(s,6H,CH3)。
13C-NMR(D2O):
产品经离子色谱检测,并与由N,N-二乙基哌啶氯化铵与六氟磷酸反应制备的样品对比,其中前者记为样品7,对比样品记为样品8,结果如下。
将制备的N,N-二乙基哌啶六氟磷酸铵与乙腈配制成1mol/L的电解液,在电化学工作站上进行循环伏安测试参见附图4,曲线接近矩形,其电化学性能较好。

Claims (7)

1.一种季铵盐的制备方法,其特征在于该方法步骤如下:
(1)胺与酸反应,生成胺盐;
(2)胺盐与碳酸烷基酯在有机溶剂中反应,生成季铵盐;
(3)将步骤(2)中产物用结晶的方法提纯,得到相应的季铵盐。
2.根据权利要求1所述的一种季铵盐的制备方法,其特征在于,所述步骤(1)中的酸为四氟硼酸、六氟磷酸中的一种。
3.根据权利要求1所述的一种季铵盐的制备方法,其特征在于,所述步骤(1)中的胺为以下结构中的一种:
其中:R1代表氢或C1~C4烷基;R2、R3代表C1~C4烷基。
4.根据权利要求1所述的一种季铵盐的制备方法,其特征在于,所述步骤(1)中胺与酸的摩尔比为1.0:1.0~1.0:1.2。
5.根据权利要求1所述的一种季铵盐的制备方法,其特征在于,所述步骤(2)中碳酸烷基酯为碳酸二甲酯、碳酸二乙酯中的一种。
6.根据权利要求1所述的一种季铵盐的制备方法,其特征在于,所述步骤(2)中有机溶剂为碳酸烷基酯对应的醇、DMF、DMSO中的一种。
7.根据权利要求1所述的一种季铵盐的制备方法,其特征在于,所述步骤(2)中胺盐与碳酸烷基酯的摩尔比为1.0:2.0~1.0:10,反应温度为70℃~180℃,反应时间为5h~14h。
CN201711393732.1A 2017-12-21 2017-12-21 一种季铵盐的制备方法 Pending CN108147937A (zh)

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Application publication date: 20180612