CN108774146A - A kind of preparation method of glycine betaine methyl ester hydrochloride - Google Patents

A kind of preparation method of glycine betaine methyl ester hydrochloride Download PDF

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Publication number
CN108774146A
CN108774146A CN201810932980.7A CN201810932980A CN108774146A CN 108774146 A CN108774146 A CN 108774146A CN 201810932980 A CN201810932980 A CN 201810932980A CN 108774146 A CN108774146 A CN 108774146A
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China
Prior art keywords
glycine betaine
ester hydrochloride
methyl ester
preparation
reaction
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CN201810932980.7A
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Chinese (zh)
Inventor
邢文国
岳涛
冯维春
陈琦
李培培
邢伶
纪晓红
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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Priority to CN201810932980.7A priority Critical patent/CN108774146A/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/04Formation of amino groups in compounds containing carboxyl groups
    • C07C227/06Formation of amino groups in compounds containing carboxyl groups by addition or substitution reactions, without increasing the number of carbon atoms in the carbon skeleton of the acid
    • C07C227/08Formation of amino groups in compounds containing carboxyl groups by addition or substitution reactions, without increasing the number of carbon atoms in the carbon skeleton of the acid by reaction of ammonia or amines with acids containing functional groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention discloses a kind of preparation methods of glycine betaine methyl ester hydrochloride, comprise the concrete steps that:Methyl chloroacetate is added into reaction bulb, then passes to front three amine gas and is reacted, after reaction, air-distillation deviates from unreacted methyl chloroacetate to get glycine betaine methyl ester hydrochloride;Wherein, the mol ratio of methyl chloroacetate and trimethylamine is 1.2~2:1.The preparation method of the present invention, realize the Quantitative yield of trimethylamine, avoid the hydrolysis of methyl chloroacetate, product yield reaches 99% or more, stable quality, simple for process, low energy consumption, it is low fundamentally to overcome monoxone facile hydrolysis, conversion ratio in traditional soda technique, trimethylamine is excessive, and discharge amount of exhaust gas is big, easily causes the key technology difficulty of environmental pollution.

Description

A kind of preparation method of glycine betaine methyl ester hydrochloride
Technical field
The present invention relates to a kind of preparation methods, and in particular to a kind of preparation method of glycine betaine methyl ester hydrochloride.Belonging to Learn synthesis technical field.
Background technology
Beet alkali hydrochlorate is a kind of quaternary alkaloid, possesses excellent bioactivity, in medicine, pesticide, feed The industries such as additive and cosmetics have a wide range of applications, and glycine betaine methyl ester hydrochloride be prepare beet alkali hydrochlorate must not The key intermediate species that can lack, its preparation directly affect the preparation of beet alkali hydrochlorate.
The chemical synthesis of beet alkali hydrochlorate, can according to the type of alkali mostly using monoxone and trimethylamine as base stock To be subdivided into the calcium method technique different with two class of sodium method.The calcium method technique of existing literature report is substantially all using monoxone, hydrogen Calcium oxide and trimethylamine reaction prepare glycine betaine methyl ester hydrochloride, are then acidified the synthesis strategy for preparing beet alkali hydrochlorate again, But during monoxone and calcium hydroxide reaction prepare calcium chloroacetate, monoxone hydrolytic side reactions inevitably occur Hydroxyacetic acid is generated, trimethylamine is excessive, and discharge amount of exhaust gas is big, easily causes environmental pollution, and energy consumption is high.Sodium method technique is main Monoxone, sodium hydroxide and trimethylamine are raw material, although raw material is easy to get, technique chlorine in the preparation process of sodium chloroacetate Acetolysis side reaction is more, causes the yield of the technique only 86% or so, and the production cycle of technique is long, the utilization rate of equipment and Turnover rate is relatively low, and sodium chloride residual is more in the product prepared, influences product quality.Therefore, there is an urgent need to develop a kind of high Imitate energy saving, environmental-friendly glycine betaine methyl ester hydrochloride preparation method.
Invention content
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of preparation of glycine betaine methyl ester hydrochloride Method is to prepare glycine betaine methyl ester hydrochloride by excessive methyl chloroacetate and trimethylamine quaternization reaction, avoids chloroethene Sour first ester hydrolysis, realizes the Quantitative yield of trimethylamine, reduces the generation of exhaust gas, and with short production cycle, simple for process, Low energy consumption.
To achieve the above object, the present invention uses following technical proposals:
A kind of preparation method of glycine betaine methyl ester hydrochloride, comprises the concrete steps that:Methyl chloroacetate is added into reaction bulb, so After be passed through front three amine gas and reacted, after reaction, air-distillation deviates from unreacted methyl chloroacetate to get glycine betaine Methyl ester hydrochloride;Wherein, the mol ratio of methyl chloroacetate and trimethylamine is 1.2~2:1, reaction equation is as follows:
Preferably, reaction temperature is 25~40 DEG C.
Preferably, the reaction time is 1~4 hour.
Preferably, the unreacted methyl chloroacetate cycle is anti-for preparing for glycine betaine methyl ester hydrochloride next time It answers.
Beneficial effects of the present invention:
The present invention carries out quaternization reaction to prepare glycine betaine methyl esters by excessive methyl chloroacetate and front three amine gas Hydrochloride, after reaction air-distillation go out unreacted methyl chloroacetate, obtain product glycine betaine methyl ester hydrochloride, the chlorine of abjection Methyl acetate recycle utilizes.
The preparation method of the present invention, realizes the Quantitative yield of trimethylamine, avoids the hydrolysis of methyl chloroacetate, and product is received Rate reaches 99% or more, stable quality, simple for process, low energy consumption, and it is easy fundamentally to overcome monoxone in traditional soda technique Hydrolysis, conversion ratio are low, and trimethylamine is excessive, and discharge amount of exhaust gas is big, easily causes the key technology difficulty of environmental pollution.
Specific implementation mode
With reference to embodiment, the present invention will be further elaborated, it should explanation, following the description merely to It explains the present invention, its content is not defined.
Embodiment 1:
After methyl chloroacetate 129.6g (1.2mol) is added into reaction bulb, it is passed through front three amine gas 59g (2mol), is kept Temperature is to react 1h at 25 DEG C, and then air-distillation deviates from unreacted methyl chloroacetate to get product glycine betaine methyl esters hydrochloric acid Salt, the methyl chloroacetate of abjection is directly used in prepares reaction next time.The yield of glycine betaine methyl ester hydrochloride is 99.2%, purity It is 99.18%.
Embodiment 2:
After methyl chloroacetate 129.6g (1.2mol) is added into reaction bulb, it is passed through front three amine gas 59g (2mol), is kept Temperature is to react 4h at 25 DEG C, and then air-distillation deviates from unreacted methyl chloroacetate to get product glycine betaine methyl esters hydrochloric acid Salt, the methyl chloroacetate of abjection is directly used in prepares reaction next time.The yield of glycine betaine methyl ester hydrochloride is 99.4%, purity It is 99.06%.
Embodiment 3:
After methyl chloroacetate 162g (1.5mol) is added into reaction bulb, it is passed through front three amine gas 59g (2mol), keeps temperature For degree to react 1h at 40 DEG C, then air-distillation deviates from unreacted methyl chloroacetate to get product glycine betaine methyl ester hydrochloride, The methyl chloroacetate of abjection is directly used in prepares reaction next time.The yield of glycine betaine methyl ester hydrochloride is 99.4%, and purity is 99.02%.
Embodiment 4:
After methyl chloroacetate 162g (1.5mol) is added into reaction bulb, it is passed through front three amine gas 59g (2mol), keeps temperature For degree to react 4h at 30 DEG C, then air-distillation deviates from unreacted methyl chloroacetate to get product glycine betaine methyl ester hydrochloride, The methyl chloroacetate of abjection is directly used in prepares reaction next time.The yield of glycine betaine methyl ester hydrochloride is 99.6%, and purity is 99.09%.
Embodiment 5:
After methyl chloroacetate 216g (2mol) is added into reaction bulb, it is passed through front three amine gas 59g (2mol), keeps temperature It is to react 3h at 40 DEG C, then air-distillation deviates from unreacted methyl chloroacetate to get product glycine betaine methyl ester hydrochloride, takes off The methyl chloroacetate gone out is directly used in prepares reaction next time.The yield of glycine betaine methyl ester hydrochloride is 99.6%, and purity is 99.10%.
Embodiment 6:
After methyl chloroacetate 216g (2mol) is added into reaction bulb, it is passed through front three amine gas 59g (2mol), keeps temperature It is to react 2h at 35 DEG C, then air-distillation deviates from unreacted methyl chloroacetate to get product glycine betaine methyl ester hydrochloride, takes off The methyl chloroacetate gone out is directly used in prepares reaction next time.The yield of glycine betaine methyl ester hydrochloride is 99.5%, and purity is 99.07%.
Although the above-mentioned specific implementation mode to the present invention is described, not to the limit of the scope of the present invention System, based on the technical solutions of the present invention, those skilled in the art need not make the creative labor can make it is each Kind modification or deformation are still within protection scope of the present invention.

Claims (5)

1. a kind of preparation method of glycine betaine methyl ester hydrochloride, which is characterized in that comprise the concrete steps that:Chloroethene is added into reaction bulb Sour methyl esters then passes to front three amine gas and is reacted, and after reaction, unreacted methyl chloroacetate is deviate from air-distillation, Up to glycine betaine methyl ester hydrochloride;Wherein, the mol ratio of methyl chloroacetate and trimethylamine is 1.2~2:1, reaction equation is such as Under:
2. a kind of preparation method of glycine betaine methyl ester hydrochloride according to claim 1, which is characterized in that reaction temperature is 25~40 DEG C.
3. a kind of preparation method of glycine betaine methyl ester hydrochloride according to claim 1, which is characterized in that the reaction time is 1~4 hour.
4. a kind of preparation method of glycine betaine methyl ester hydrochloride according to claim 1, which is characterized in that the reaction time is 2~4 hours.
5. a kind of preparation method of glycine betaine methyl ester hydrochloride according to claim 1, which is characterized in that the unreacted Preparation reaction of the methyl chloroacetate cycle for glycine betaine methyl ester hydrochloride next time.
CN201810932980.7A 2018-08-16 2018-08-16 A kind of preparation method of glycine betaine methyl ester hydrochloride Pending CN108774146A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110568119A (en) * 2019-10-09 2019-12-13 山东省化工研究院 method for simultaneously detecting betaine hydrochloride and methyl chloroacetate quaternary ammonium salt

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DD294708A5 (en) * 1990-05-30 1991-10-10 Berlin-Chemie,De NEW BIOLOGICAL ACTIVE OMEGA (ALKYLAMINO) CARBON ACID PHENYLESTER
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CN101691335A (en) * 2009-10-26 2010-04-07 大庆市富杰化工有限公司 Carboxylic acid higher alcohol ester-trimethyl ammonium chloride and application thereof in clay stabilizer
CN102126964A (en) * 2010-12-10 2011-07-20 江南大学 Method for preparing high-content alpha-lauryl betaine by solvent-free quaternization
CN102267918A (en) * 2011-06-23 2011-12-07 杭州海尔希畜牧科技有限公司 Method for preparing betaine hydrochloride
CN102391139A (en) * 2011-08-24 2012-03-28 山东大学 Energy-saving and environmentally-friendly process for synthesizing alkyl betaine
CN107986988A (en) * 2017-11-28 2018-05-04 云南大学 Protonated betaine type ionic liquid of hydroxamic acid functionalization and preparation method thereof
CN109942445A (en) * 2019-02-26 2019-06-28 山东瑞弘生物科技有限公司 Beet alkali hydrochlorate synthetic method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD294708A5 (en) * 1990-05-30 1991-10-10 Berlin-Chemie,De NEW BIOLOGICAL ACTIVE OMEGA (ALKYLAMINO) CARBON ACID PHENYLESTER
CN1263085A (en) * 1998-12-28 2000-08-16 花王株式会社 Preparation method of betaine alkyl ester mixture
CN101691335A (en) * 2009-10-26 2010-04-07 大庆市富杰化工有限公司 Carboxylic acid higher alcohol ester-trimethyl ammonium chloride and application thereof in clay stabilizer
CN102126964A (en) * 2010-12-10 2011-07-20 江南大学 Method for preparing high-content alpha-lauryl betaine by solvent-free quaternization
CN102267918A (en) * 2011-06-23 2011-12-07 杭州海尔希畜牧科技有限公司 Method for preparing betaine hydrochloride
CN102391139A (en) * 2011-08-24 2012-03-28 山东大学 Energy-saving and environmentally-friendly process for synthesizing alkyl betaine
CN107986988A (en) * 2017-11-28 2018-05-04 云南大学 Protonated betaine type ionic liquid of hydroxamic acid functionalization and preparation method thereof
CN109942445A (en) * 2019-02-26 2019-06-28 山东瑞弘生物科技有限公司 Beet alkali hydrochlorate synthetic method

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FREDERICK G. BORDWELL等: "Acidities of the H-C Protons in Carboxylic Esters, Amides, and Nitriles", 《J. ORG. CHEM.》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110568119A (en) * 2019-10-09 2019-12-13 山东省化工研究院 method for simultaneously detecting betaine hydrochloride and methyl chloroacetate quaternary ammonium salt

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Application publication date: 20181109