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CN103204829A - A kind of preparation method of organic acid glycidyl ester - Google Patents

A kind of preparation method of organic acid glycidyl ester Download PDF

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Publication number
CN103204829A
CN103204829A CN2013101197845A CN201310119784A CN103204829A CN 103204829 A CN103204829 A CN 103204829A CN 2013101197845 A CN2013101197845 A CN 2013101197845A CN 201310119784 A CN201310119784 A CN 201310119784A CN 103204829 A CN103204829 A CN 103204829A
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ester
reaction
methyl
organic
preparation
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CN2013101197845A
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Chinese (zh)
Inventor
刘建辉
宋珠草
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Dalian University of Technology
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Dalian University of Technology
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Abstract

The invention relates to a preparation method of organic acid glycidyl ester, which belongs to the field of organic synthesis, wherein a catalyst is used for catalyzing ester exchange reaction of organic ester and glycidyl ester, wherein the organic ester is methyl acrylate, methyl benzoate, 4-nitrobenzoic acid methyl ester, p-iodobenzoic acid methyl ester, 4-acetylenyl methyl benzoate or p-methoxy methyl cinnamate; the catalyst is 4-dimethylaminopyridine, and the method has the beneficial effects that the 4-dimethylaminopyridine is used as the catalyst, so that the reaction time is effectively shortened, and the energy conservation and emission reduction are facilitated.

Description

A kind of organic acid glycidyl ester preparation method
Technical field
The present invention relates to a kind of organic acid glycidyl ester preparation method, belong to the organic synthesis field.
Background technology
Transesterification reaction between ester and the alcohol can be used dissimilar catalyzer.JP55011542 uses KOH as the catalyzer of condensation reaction, yet this strong alkaline substance can make Racemic glycidol in the short period of time polymerization take place, and produces potentiality danger such as blast.DE2423405 uses the stronger lithium methoxide of alkalescence as catalyzer, brings very big danger to aftertreatment.The use of weakly alkaline catalyzer also has report, has used potassium cyanide as catalyzer as DE2525026, and it can cause the appearance of addition by product, not only makes reaction process complicated, and product purity is reduced.JP55094381 has used the less Potassium ethanoate of toxicity as catalyzer, but in the still-process of aftertreatment, has significantly reduced the purity of product.Also have one piece of Japanese Patent to make catalyzer with triethylamine, use normal hexane that methyl alcohol is taken out of, obtain the very high product of purity.Triethylamine has suppressed the addition of methyl alcohol to methacrylic acid, has reduced the generation of by product.But triethylamine may be sneaked in the product, has influenced quality product, and the recovery of normal hexane is also pretty troublesome.JP55094379 has reported that also use N-Methylimidazole is as the Preparation of Catalyst glycidyl methacrylate.In transesterification reaction, by-product carbinol is that the existence by negative pressure separates from reaction system and removes, and the separation of target product is then realized by underpressure distillation.
Summary of the invention
The object of the invention is to provide the novel process of a kind of 4-of utilization Dimethylamino pyridine as Catalyst Production organic acid glycidyl ester, and synthesizes six kinds of fine-chemical intermediate compounds.The present invention utilizes the transesterification reaction principle, and single step reaction obtains needed product, simplifies technical process, reduces production costs.
The invention provides a kind of organic acid glycidyl ester preparation method, utilize the transesterification reaction of catalyst organic ester and Racemic glycidol, described organic ester is methyl acrylate, methyl benzoate, 4-nitrobenzoic acid methyl esters, 4-Iodobenzoic acid methyl esters, 4-acetylenylbenzene methyl-formiate or p-methoxycinnamic acid methyl esters; Described catalyzer is the 4-Dimethylamino pyridine.
Catalyzer in the transesterification reaction of the prior art is strong alkali catalyst, catalyzer in the transesterification reaction of the present invention is the 4-Dimethylamino pyridine, the 4-Dimethylamino pyridine is a kind of organic weak base, does not react with two keys, triple bond and iodine in the reactant, effectively suppresses the generation of side reaction.
The mass ratio of catalyzer of the present invention and organic ester is preferably 1:1~10.
The mass ratio of organic ester of the present invention and Racemic glycidol is preferably 1:1~10.
Preparation method of the present invention is for to join organic ester, Racemic glycidol, 4-Dimethylamino pyridine and stopper in the reactor, and the control temperature of reaction is 30~60 ℃, reaction 1~5h;
Described stopper is MEHQ.
Beneficial effect of the present invention is:
1. the 4-Dimethylamino pyridine is a kind of effective catalyst, and with catalyzer ratio of the prior art, in the identical reaction times, temperature of reaction obviously reduces; Identical temperature of reaction, the reaction times obviously shortens, and is beneficial to energy-saving and emission-reduction;
2. the 4-Dimethylamino pyridine is a kind of catalyzer of gentleness, can reduce the generation of side reaction;
3. the present invention utilizes transesterification reaction, and single step reaction obtains Chemicals, has simplified production process, has reduced production cost.
Embodiment
Following non-limiting example can make those of ordinary skill in the art more fully understand the present invention, but does not limit the present invention in any way.
Embodiment 1
4-Iodobenzoic acid methyl esters with 131mg, the Racemic glycidol of 221mg, 2.7g ethyl acetate solvent join successively in the there-necked flask that is provided with water trap and thermometer, again the 4-Dimethylamino pyridine of 60mg and the MEHQ of 30mg are joined in the reactor, the control temperature of reaction is 60 ℃, reaction 2h, constantly blast nitrogen in the reaction process, methyl alcohol except the dereaction generation, the normal-phase chromatography condition is 200~300 order silica gel, 4-Iodobenzoic acid glycidyl ester crude product and silica gel mass ratio are 1:30, moving phase is normal hexane/ether=4/1, elution volume is 4 column volumes, collection contains the cut of 4-Iodobenzoic acid glycidyl ester, evaporate to dryness obtains 0.098g 4-Iodobenzoic acid glycidyl ester faint yellow solid, and yield is 65%.
Embodiment 2
4-nitrobenzoic acid methyl esters with 90mg, the Racemic glycidol of 221mg, 2.7g ethyl acetate solvent join successively in the there-necked flask that is provided with water trap and thermometer, again the 4-Dimethylamino pyridine of 60mg and the MEHQ of 30mg are joined in the reactor, the control temperature of reaction is 50 ℃, reaction 2h, constantly blast nitrogen in the reaction process, methyl alcohol except the dereaction generation, the normal-phase chromatography condition is 200~300 order silica gel, 4-nitrobenzoyl acid glycidyl ester crude product and silica gel mass ratio are 1:30, moving phase is normal hexane/ether=4/1, elution volume is 4 column volumes, collection contains the cut of 4-nitrobenzoyl acid glycidyl ester, evaporate to dryness obtains 0.084g4-nitrobenzoyl acid glycidyl ester colourless liquid, and yield is 75%.
Embodiment 3
Methyl acrylate with 43mg, the Racemic glycidol of 221mg joins in the there-necked flask that is provided with water trap and thermometer successively, again the 4-Dimethylamino pyridine of 60mg and the MEHQ of 30mg are joined in the reactor, the control temperature of reaction is 60 ℃, reaction 2h, constantly blast nitrogen in the reaction process, methyl alcohol except the dereaction generation, the normal-phase chromatography condition is 200~300 order silica gel, glycidyl acrylate crude product and silica gel mass ratio are 1:30, moving phase is normal hexane/ether=4/1, and elution volume is 4 column volumes, collects the cut that contains glycidyl acrylate, evaporate to dryness obtains 0.047g glycidyl acrylate colourless liquid, and yield is 74%.
Embodiment 4
Methyl benzoate with 68mg, the Racemic glycidol of 221mg, 2.7g ethyl acetate solvent join successively in the there-necked flask that is provided with water trap and thermometer, again the 4-Dimethylamino pyridine of 60mg and the MEHQ of 30mg are joined in the reactor, the control temperature of reaction is 50 ℃, reaction 2h, constantly blast nitrogen in the reaction process, methyl alcohol except the dereaction generation, the normal-phase chromatography condition is 200~300 order silica gel, phenylformic acid glycidyl ester crude product and silica gel mass ratio are 1:30, moving phase is normal hexane/ether=4/1, elution volume is 4 column volumes, collection contains the cut of phenylformic acid glycidyl ester, evaporate to dryness obtains 0.064g phenylformic acid glycidyl ester colourless liquid, and yield is 72%.
Embodiment 5
P-methoxycinnamic acid methyl esters with 96mg, the Racemic glycidol of 221mg, 2.7g ethyl acetate solvent join successively in the there-necked flask that is provided with water trap and thermometer, again the 4-Dimethylamino pyridine of 60mg and the MEHQ of 30mg are joined in the reactor, the control temperature of reaction is 60 ℃, reaction 2h, constantly blast nitrogen in the reaction process, methyl alcohol except the dereaction generation, the normal-phase chromatography condition is 200~300 order silica gel, p-methoxycinnamic acid glycidyl ester crude product and silica gel mass ratio are 1:30, moving phase is normal hexane/ether=4/1, elution volume is 4 column volumes, collection contains the cut of p-methoxycinnamic acid glycidyl ester, evaporate to dryness obtains 0.073g p-methoxycinnamic acid glycidyl ester colourless liquid, and yield is 62%.
Embodiment 6
4-acetylenylbenzene methyl-formiate with 80mg, the Racemic glycidol of 221mg, 2.7g ethyl acetate solvent join successively in the there-necked flask that is provided with water trap and thermometer, again the 4-Dimethylamino pyridine of 60mg and the MEHQ of 30mg are joined in the reactor, the control temperature of reaction is 30 ℃, reaction 2h, constantly blast nitrogen in the reaction process, methyl alcohol except the dereaction generation, the normal-phase chromatography condition is 200~300 order silica gel, 4-acetylenylbenzene formic acid glycidyl ester crude product and silica gel mass ratio are 1:30, moving phase is normal hexane/ether=4/1, elution volume is 4 column volumes, collection contains the cut of 4-acetylenylbenzene formic acid glycidyl ester, evaporate to dryness obtains 0.069g4-acetylenylbenzene formic acid glycidyl ester colourless liquid, and yield is 68%.

Claims (4)

1.一种有机酸缩水甘油酯制备方法,利用催化剂催化有机酯与缩水甘油的酯交换反应,其特征在于:所述有机酯为丙烯酸甲酯、苯甲酸甲酯、4-硝基苯甲酸甲酯、对碘苯甲酸甲酯、4-乙炔基苯甲酸甲酯或对甲氧基肉桂酸甲酯;所述催化剂为4-二甲氨基吡啶。1. a preparation method of organic acid glycidyl ester, utilizes catalyst to catalyze the transesterification reaction of organic ester and glycidol, it is characterized in that: described organic ester is methyl acrylate, methyl benzoate, methyl 4-nitrobenzoate ester, methyl p-iodobenzoate, methyl 4-ethynylbenzoate or methyl p-methoxycinnamate; the catalyst is 4-dimethylaminopyridine. 2.根据权利要求1所述的制备方法,其特征在于:所述催化剂与有机酯的质量比为1:1~10。2. The preparation method according to claim 1, characterized in that: the mass ratio of the catalyst to the organic ester is 1:1-10. 3.根据权利要求1所述的制备方法,其特征在于:所述有机酯与缩水甘油的质量比为1:1~10。3. The preparation method according to claim 1, characterized in that: the mass ratio of the organic ester to glycidol is 1:1-10. 4.根据权利要求1、2或3所述的制备方法,其特征在于:所述制备方法为将有机酯、缩水甘油、4-二甲氨基吡啶和阻聚剂加入到反应釜中,控制反应温度为30~60℃,反应1~5h;4. according to the described preparation method of claim 1,2 or 3, it is characterized in that: described preparation method is that organic ester, glycidol, 4-dimethylaminopyridine and polymerization inhibitor are joined in reactor, control reaction The temperature is 30-60°C, and the reaction is 1-5h; 所述阻聚剂为对羟基苯甲醚。The polymerization inhibitor is p-hydroxyanisole.
CN2013101197845A 2013-04-08 2013-04-08 A kind of preparation method of organic acid glycidyl ester Pending CN103204829A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030216587A1 (en) * 2002-05-13 2003-11-20 Saudi Basic Industries Corporation (Sabic) Process for the conversion of aldehydes to esters
CN101528938A (en) * 2006-10-26 2009-09-09 巴斯夫欧洲公司 Process for producing of epoxy-containing (meth)acrylic esters, using lipases
CN101570537A (en) * 2009-06-18 2009-11-04 浙江师范大学 Preparation method of panipenem

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030216587A1 (en) * 2002-05-13 2003-11-20 Saudi Basic Industries Corporation (Sabic) Process for the conversion of aldehydes to esters
CN101528938A (en) * 2006-10-26 2009-09-09 巴斯夫欧洲公司 Process for producing of epoxy-containing (meth)acrylic esters, using lipases
CN101570537A (en) * 2009-06-18 2009-11-04 浙江师范大学 Preparation method of panipenem

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
庞灏等: "《一种新型高效阻聚剂-对羟基苯甲醚》", 《江苏化工》 *
廖联安等: "《4-二甲氨基吡啶的合成及其催化的有机反应》", 《合成化学》 *

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Application publication date: 20130717