CN101613273A - A kind of preparation method of dimeric acid methyl ester - Google Patents

A kind of preparation method of dimeric acid methyl ester Download PDF

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CN101613273A
CN101613273A CN200910159634A CN200910159634A CN101613273A CN 101613273 A CN101613273 A CN 101613273A CN 200910159634 A CN200910159634 A CN 200910159634A CN 200910159634 A CN200910159634 A CN 200910159634A CN 101613273 A CN101613273 A CN 101613273A
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acid
methyl ester
acid methyl
functionalization
alkylsulphonic
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于世涛
刘仕伟
刘福胜
解从霞
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Qingdao University of Science and Technology
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Abstract

The present invention relates to the method that the ionic liquid-catalyzed unsaturated fatty acids methyl esters of a kind of Br φ nsted-Lewis bisgallic acid dimerization prepares dimeric acid methyl ester, it is characterized in that adopting 1 of the pyridylium of alkylsulphonic acid functionalization or alkylsulphonic acid functionalization, the Br φ nsted-Lewis bisgallic acid ionic liquid that the quaternary ammonium salt cationic of 3-dialkylimidazolium positively charged ion or alkylsulphonic acid functionalization and Lewis tart inorganic anion constitute is as catalyzer; Under nitrogen protection, 220~280 ℃ of temperature of reaction, reaction times 2~8 hours catalysis fatty acid methyl esters polyreaction prepare dimeric acid methyl ester, compared with prior art: 1. have higher polymerizing power, it is short to need not pressurization and reaction times.2. dimeric acid methyl ester product and ionic-liquid catalyst are miscible and layering voluntarily makes sepn process more easy.3. the catalyst ion liquid properties is stable, can be recycled.

Description

A kind of preparation method of dimeric acid methyl ester
Technical field
The present invention relates to a kind of
Figure G2009101596340D00011
The application of-Lewis bisgallic acid ionic liquid in unsaturated fatty acids methyl esters polyreaction promptly relates to a kind of
Figure G2009101596340D00012
The ionic liquid-catalyzed unsaturated fatty acids methyl esters of-Lewis bisgallic acid dimerization prepares the novel method of dimeric acid methyl ester.
Background technology
Dimeric acid methyl ester is the intermolecular generation of two or more unsaturated fatty acid esters Diels-Alder reaction, the oligomeric compound of the dicarboxylic esters that generates, it is actually by 36 carbon dimers, a small amount of 54 carbon tripolymers and the mixture formed of polymer polymer more.Dimeric acid methyl ester can be used to produce polyamide resin, and its snappiness is good, adhesive power is high and antiseptic and rustproof characteristic is arranged, and can be used for making coating, tamanori etc., is widely used in industries such as boats and ships, machinery, motor, automobile, civil construction.The polymkeric substance of dimeric acid methyl ester has good snappiness, sticking power, stopping property and water tolerance, can be used for industries such as electronics, coating, printing ink.Dimeric acid methyl ester and petroleum product, organic solvent have good intermiscibility, thermostability, can be used as metal processing machining oil, lubricating oil, antirust wet goods additive, also can be used as tensio-active agent and be used for washing composition, flow agent, levelling agent, dispersion agent, static inhibitor etc.Bao Dao lipid acid polymerization method is hot dimerization method the earliest, this arts demand high-temperature pressurizing reaction.At present carclazyte catalysis fatty acid methyl ester dimerization reactions that adopt prepare dimeric acid methyl ester more, are catalyzer as US 3873585 with the wilkinite that contains 75% above polynite; It is catalyzer that US 6187903 and US 3632822 adopt the carclazyte of alkali-metal oxyhydroxide and oxide modifying respectively; And CN101293829A employing Aluminum chloride anhydrous or Zinc Chloride Anhydrous are catalyzer, and the vitriol oil is a promotor.There is following shortcoming mostly in these technologies: the consumption of heterogeneous catalyst is excessive, and the meeting entrained product, causes the loss of product; Generally need to carry out under the high pressure, reaction conditions is relatively harsher, and is also higher to the requirement of conversion unit and operation.
Because of having traditional molecular solvent and fused salt dual nature, ionic liquid at room temperature has been widely used in catalysis or the uncatalyzed reaction as eco-friendly green solvent of a class or catalyzer.In recent years, the acid functionalization ionic liquid has become the focus in the research, and its advantage is: compare favourably with solid acid, and the tart modulation is easier, meticulousr, thereby helps the research and the screening of catalyst of catalytic mechanism more; Similar with conventional acid, have the advantage of fluent material, as: good fluidity, acidic site density height and strength of acid are evenly distributed; By changing and modified ion liquid yin, yang ionic structure, can realize the optimization of heterogeneous reaction system, as: simplify the separation of product, promote ion liquid recycling.Therefore, the acid functionalization ionic liquid can replace the conventional acid catalyzer, has great application potential.
Summary of the invention
The objective of the invention is to replace the method that traditional acid catalysis fatty acid methyl polyisocyanate polyaddition prepares dimeric acid methyl ester, a kind of efficient and eco-friendly catalysts is provided, under the reaction conditions of gentleness, catalysis fatty acid methyl ester polyreaction prepares the novel method of dimeric acid methyl ester, for dimeric acid methyl ester synthetic provides an eco-friendly operational path.
The present invention relates to a kind of preparation method of dimeric acid methyl ester, it is characterized in that adopting 1 of the pyridylium of alkylsulphonic acid functionalization or alkylsulphonic acid functionalization, the quaternary ammonium salt cationic of 3-dialkylimidazolium positively charged ion or alkylsulphonic acid functionalization and Lewis tart inorganic anion constitute
Figure G2009101596340D00021
-Lewis bisgallic acid ionic liquid is as catalyzer; Reaction conditions is under the nitrogen protection, 200~280 ℃ of temperature of reaction, 2~8 hours reaction times, and catalysis fatty acid methyl ester polyreaction prepares dimeric acid methyl ester.
1 of pyridylium of alkylsulphonic acid functionalization used herein (1) or alkylsulphonic acid functionalization, the general structure of the quaternary ammonium salt cationic (3) of 3-dialkylimidazolium positively charged ion (2) or alkylsulphonic acid functionalization is as follows:
Figure G2009101596340D00022
N=3~4 wherein, R 1Be C 1~C 3, R 2Be C 1~C 3
Lewis tart inorganic anion used herein is a kind of in chlorine zincic acid root, bromine zincic acid root, chlorine copper acid group, bromine copper acid group, chlorine ferrous acid root, the bromine ferrous acid root.
Ionic liquid quality used in the present invention is 1: 30 to 1: 4 with the total quality of material ratio of reaction
The present invention solves this technical problem by the following technical programs:
1.
Figure G2009101596340D00023
The ion liquid typical production of-Lewis bisgallic acid is: with a certain amount of 1,3-propane sultone or 1, it is in 5~10 times the ethyl acetate that the 4-butane sultone is dissolved in its total mass number, be warming up to 40~60 ℃, drip equimolar N-Methylimidazole, or the N-ethyl imidazol(e), or the N-propyl imidazole, or pyridine, or Trimethylamine 99, or triethylamine, or tripropyl amine, dropwise, after the insulation reaction 3~5 hours, filter, filter cake washs with ethyl acetate, and, obtain corresponding white solid inner salt in 100 ℃ times dry 2 hours; Get a certain amount of inner salt that makes, be dissolved in the deionized water of 2~4 times of its total mass numbers, dripping equimolar mass concentration and be 37% hydrochloric acid or mass concentration is 40% Hydrogen bromide acidification reaction, after dropwising, is warming up to 70~90 ℃ and insulation reaction 2~3 hours; After reaction finished, decompression dehydration obtained light yellow viscous liquid acidifying inner salt; Get a certain amount of acidifying inner salt that makes, with mol ratio be 1: 1.1~3.0 zinc chloride, or zinc bromide, or cupric chloride; or cupric bromide, or iron(ic) chloride, or the iron bromide mixing, under nitrogen protection; be warming up to 90~110 ℃, insulation reaction to solid all dissolves, and promptly obtains being under the room temperature heavy-gravity liquid -Lewis bisgallic acid ionic liquid.
The typical case of dimeric acid methyl ester preparation be (with
Figure G2009101596340D00025
-Lewis bisgallic acid ionic liquid 1-(4-sulfonic acid) butyl-3-Methylimidazole chlorozincate; acidifying inner salt and zinc chloride mol ratio 1: 2.5): get the ionic liquid of 1.0~2.5 parts of weight and the fatty acid methyl ester of 10~30 parts of weight; under nitrogen protection; in 200~280 ℃ of following polyreactions after 2~8 hours; cooling also adds proper amount of solvent toluene extraction product, topples over and tells the upper strata extraction phase.The supernatant liquid solvent that reduces pressure obtains the dimeric acid methyl ester product.
3. the employed ionic liquid of method of the present invention is reusable, ionic liquid multiple canonical process is after the reaction solution extraction with esterification last time, because of under the ionic liquid low temperature very thickness and density greater than extraction phase, can directly topple over easily and the upper strata extraction phase, lower floor's ionic liquid need not any processing and promptly can be used for next polyreaction, when the ionic liquid consumption is reaction solution total mass 20%, to reuse 6 times, the yield of polymerisate dimeric acid methyl ester is not seen obvious decline.
The present invention compares with traditional catalyst, is characterized in:
1. have higher polymerizing power, it is short to need not pressurization and reaction times.
2. product dimeric acid methyl ester look shallow, matter good, and layering voluntarily makes the separation of product and aftertreatment more easy with ionic-liquid catalyst is not miscible.
3. the catalyst ion liquid properties is stable, and reaction is with promptly can be used for reaction next time without any processing later, and catalytic performance do not see reduction, and it is good to recycle performance, genus environmentally friendly technology route.
Specific implementation method
Below in conjunction with embodiment method of the present invention being described further, is not limitation of the invention.
Embodiment one: with 1.0g 1-(4-sulfonic acid) butyl-3-Methylimidazole chlorozincate (wherein the mol ratio of chlorination 1-(4-sulfonic acid) butyl-3-methylimidazole salt and zinc chloride is 1: 3.0) and 30g fatty acid methyl ester under nitrogen protection; in 230 ℃ of reactions 6 hours; be cooled to room temperature; add toluene 30g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 67%.
Embodiment two: with 2.0g 1-(3-sulfonic acid) propyl group-3-propyl imidazole chloro-cuprate (wherein the mol ratio of chlorination 1-(3-sulfonic acid) butyl-3-methylimidazole salt and cupric chloride is 1: 2.0) and 10g fatty acid methyl ester under nitrogen protection; in 200 ℃ of reactions 5 hours; be cooled to room temperature; add toluene 20g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 71%.
Embodiment three: with 3.0g 1-(4-sulfonic acid) butyl-3-ethyl imidazol(e) bromine cuprate (wherein the mol ratio of bromination 1-(4-sulfonic acid) butyl-3-ethyl imidazol(e) salt and cupric bromide is 1: 1.1) and 12g fatty acid methyl ester under nitrogen protection; in 280 ℃ of reactions 4 hours; be cooled to room temperature; add toluene 25g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 53%.
Embodiment four: with 1.5g 4-sulfonic acid butyl-pyridinium bromine zincate (wherein the mol ratio of bromination 4-sulfonic acid butyl-pyridinium salt and zinc chloride is 1: 2.0) and 20g fatty acid methyl ester under nitrogen protection; in 200 ℃ of reactions 8 hours; be cooled to room temperature; add toluene 35g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 76%.
Embodiment five: with 1.5g 3-sulfonic acid propyl group pyridinium tribromide wustite (wherein the mol ratio of bromination 3-sulfonic acid propyl group pyridinium salt and iron bromide is 1: 2.5) and 20g fatty acid methyl ester under nitrogen protection; in 250 ℃ of reactions 5 hours; be cooled to room temperature; add toluene 35g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 74%.
Embodiment six: with 1.0g 3-sulfonic acid oxypropyl trimethyl amine ferricyanide (wherein the mol ratio of chlorination 3-sulfonic acid oxypropyl trimethyl amine salt and iron(ic) chloride is 1: 2.0) and 10g fatty acid methyl ester under nitrogen protection; in 280 ℃ of reactions 2 hours; be cooled to room temperature; add toluene 15g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 52%.
Embodiment seven: with 1.5g 3-sulfonic acid propyl group triethylamine ferricyanide (wherein the mol ratio of chlorination 3-sulfonic acid propyl group triethyl amine salt and iron(ic) chloride is 1: 2.0) and 20g fatty acid methyl ester under nitrogen protection; in 260 ℃ of reactions 4 hours; be cooled to room temperature; add toluene 15g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 64%.
Embodiment eight: with 3.0g 4-sulfonic acid butyl tripropylamine ferricyanide (wherein the mol ratio of chlorination 4-sulfonic acid butyl tripropyl amine salt and iron(ic) chloride is 1: 1.5) and 30g fatty acid methyl ester under nitrogen protection; in 230 ℃ of reactions 6 hours; be cooled to room temperature; add toluene 50g extraction polymerisate and unreacted raw material; tell upper layer of extraction liquid; and the decompression (5mmHg) 240 ℃ deviate from toluene and unreacting material, obtain the polymerisate dimeric acid methyl ester, yield is 73%.

Claims (4)

1. the preparation method of a dimeric acid methyl ester, tool is characterised in that 1 of the pyridylium that adopts the alkylsulphonic acid functionalization or alkylsulphonic acid functionalization, the quaternary ammonium salt cationic of 3-dialkylimidazolium positively charged ion or alkylsulphonic acid functionalization and Lewis tart inorganic anion formation
Figure A2009101596340002C1
The bisgallic acid ionic liquid is as catalyzer; Reaction conditions is under the nitrogen protection, 200~280 ℃ of temperature of reaction, 2~8 hours reaction times, and catalysis fatty acid methyl ester polyreaction prepares dimeric acid methyl ester.
2. preparation method as claimed in claim 1, it is characterized in that 1 of the pyridylium (1) of described alkylsulphonic acid functionalization or alkylsulphonic acid functionalization, the general structure of the quaternary ammonium salt cationic (3) of 3-dialkylimidazolium positively charged ion (2) or alkylsulphonic acid functionalization is as follows:
Figure A2009101596340002C2
N=3~4 wherein, R 1Be C 1~C 3, R 2Be C 1~C 3
3. preparation method as claimed in claim 1 is characterized in that described Lewis tart inorganic anion is a kind of in chlorine zincic acid root, bromine zincic acid root, chlorine copper acid group, bromine copper acid group, chlorine ferrous acid root, the bromine ferrous acid root.
4. preparation method as claimed in claim 1 is characterized in that described ionic liquid quality and the total quality of material ratio of reaction are 1: 30 to 1: 4.
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Cited By (9)

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CN102382015A (en) * 2011-08-02 2012-03-21 常州大学 Method for preparing sulfated methyl ester by ionic liquid catalysis method
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CN102557928A (en) * 2011-12-29 2012-07-11 北京国力源高分子科技研发中心 Method for preparing dimeric acid methyl ester by using microwaves
CN103204836A (en) * 2013-03-31 2013-07-17 青岛科技大学 Method for preparing 5-hydroxymethyl furfural
CN104785297A (en) * 2015-03-25 2015-07-22 中国人民解放军空军油料研究所 Catalyst for preparing antiwear agent of aviation fuel
CN104789298A (en) * 2015-03-25 2015-07-22 中国人民解放军空军油料研究所 Method for preparing antiwear agent of aviation fuel
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CN106220464A (en) * 2016-07-05 2016-12-14 青岛科技大学 A kind of method being catalyzed α pinene dimerization reaction
CN111153799A (en) * 2020-01-20 2020-05-15 浙江本立科技股份有限公司 Preparation method of methyl 3-methoxyacrylate

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102382015A (en) * 2011-08-02 2012-03-21 常州大学 Method for preparing sulfated methyl ester by ionic liquid catalysis method
CN102516128A (en) * 2011-12-19 2012-06-27 河北工业大学 Synthetic technology of diphenylmethane dicarbamate by adopting Bronsted-Lewis acidic ionic liquid catalysis
CN102516128B (en) * 2011-12-19 2014-03-19 河北工业大学 Synthetic technology of diphenylmethane dicarbamate by adopting Bronsted-Lewis acidic ionic liquid catalysis
CN102557928A (en) * 2011-12-29 2012-07-11 北京国力源高分子科技研发中心 Method for preparing dimeric acid methyl ester by using microwaves
CN103204836A (en) * 2013-03-31 2013-07-17 青岛科技大学 Method for preparing 5-hydroxymethyl furfural
CN103204836B (en) * 2013-03-31 2017-10-10 青岛科技大学 A kind of method for preparing 5 hydroxymethylfurfurals
CN104817521A (en) * 2015-03-03 2015-08-05 中国林业科学研究院林产化学工业研究所 Epoxy dimeric fatty acid methyl ester, preparation method and applications thereof
CN104785297A (en) * 2015-03-25 2015-07-22 中国人民解放军空军油料研究所 Catalyst for preparing antiwear agent of aviation fuel
CN104789298A (en) * 2015-03-25 2015-07-22 中国人民解放军空军油料研究所 Method for preparing antiwear agent of aviation fuel
CN104789298B (en) * 2015-03-25 2017-10-17 中国人民解放军空军油料研究所 A kind of method for preparing aviation fuel antiwear additive
CN106220464A (en) * 2016-07-05 2016-12-14 青岛科技大学 A kind of method being catalyzed α pinene dimerization reaction
CN111153799A (en) * 2020-01-20 2020-05-15 浙江本立科技股份有限公司 Preparation method of methyl 3-methoxyacrylate

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