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Efficient preparation of methyl 3-hydroxypropanoate

A technology of methyl hydroxypropionate and tetraphenyl borate, applied in the field of efficient preparation of methyl 3-hydroxypropionate, can solve the problems of high reaction pressure, high reaction temperature, high device requirements, large energy consumption, etc. The effect of improving conversion rate, high activity and stable properties

Active Publication Date: 2019-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is relatively high reaction pressure and reaction temperature in the prior art, high device requirements, high energy consumption, and poor catalyst performance; a new method for preparing methyl 3-hydroxypropionate is provided The method has the advantages of high catalyst activity and selectivity, and mild reaction conditions

Method used

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  • Efficient preparation of methyl 3-hydroxypropanoate
  • Efficient preparation of methyl 3-hydroxypropanoate
  • Efficient preparation of methyl 3-hydroxypropanoate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]

[0031] Dissolve 1mmol of catalyst A in 30mL of methanol and 3mL of acetonitrile, transfer it to a 100mL reaction kettle, purge the reaction kettle with nitrogen three times, add 10mmol of ethylene oxide, and pass in carbon monoxide to make the system pressure 4.0MPa, and react at 50°C 3 hours. After the reaction was completed, the reactor body was fully cooled to 0°C, and the pressure was slowly released to normal pressure. The reactor was purged three times with nitrogen, and samples were taken for analysis. The experimental results are shown in Table 1.

Embodiment 2

[0033]

[0034] Dissolve 1mmol of Catalyst B in 30mL of methanol and 3mL of acetonitrile, transfer to a 100mL reaction kettle, purge the reaction kettle with nitrogen three times, add 10mmol of ethylene oxide, pass in carbon monoxide, make the system pressure 4.0MPa, and react at 50°C 3 hours. After the reaction was completed, the reactor body was fully cooled to 0°C, and the pressure was slowly released to normal pressure. The reactor was purged three times with nitrogen, and samples were taken for analysis. The experimental results are shown in Table 1.

Embodiment 3

[0036]

[0037] Dissolve 1mmol of Catalyst C in 30mL of methanol and 3mL of acetonitrile, transfer to a 100mL reactor, purge the reactor with nitrogen three times, add 10mmol of ethylene oxide, and pass in carbon monoxide to make the system pressure 4.0MPa, and react at 50°C 3 hours. After the reaction was completed, the reactor body was fully cooled to 0°C, and the pressure was slowly released to normal pressure. The reactor was purged three times with nitrogen, and samples were taken for analysis. The experimental results are shown in Table 1.

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Abstract

The invention relates to an efficient preparation method of methyl 3-hydroxypropanoate. The problems that in the prior art, reaction conditions are relatively rigor and the reaction conversion rate and selectivity are low are mainly solved. The preparation method of the methyl 3-hydroxypropanoate includes the following steps that a ruthenium catalyst which is prepared in advance is added, and oxirane, carbon monoxide and methyl alcohol react to obtain the methyl 3-hydroxypropanoate. X- is selected from hexafluorophosphate, tetrafluoroborate, tetraphenylborate and hexafluoroantimonate, R is oneof alkyl, vinyl, epoxy, aryl and substituted aryl, by means of the technical scheme, the technical problem is well solved, and the method can be applied to industrial production of the methyl 3-hydroxypropanoate.

Description

technical field [0001] The invention relates to a high-efficiency preparation method of methyl 3-hydroxypropionate, in particular to a method for preparing methyl 3-hydroxypropionate by using ethylene oxide and synthesis gas as raw materials. Background technique [0002] 1,3-Propanediol is an important organic fine chemical, which can be used as a raw material for the production of antifreeze, plasticizer, preservative and emulsifier, and is also widely used in industries such as food, cosmetics and pharmaceuticals. Its most important The application is to synthesize polytrimethylene terephthalate (PTT) polyester fiber as a monomer, and commonly used polyethylene terephthalate (PET) fiber, polybutylene terephthalate (PBT) fiber In comparison, PTT fiber not only has excellent properties such as light resistance, less water absorption, and good stability, but also has the advantages of good resilience, easy biodegradation, and low environmental pollution. It has broad applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/37C07C69/675
CPCC07C67/37C07C69/675
Inventor 刘波吕建刚金照生
Owner CHINA PETROLEUM & CHEM CORP
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