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CAS No. : | 2343-89-7 | MDL No. : | MFCD04039286 |
Formula : | C4H5FO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | ZTZJVAOTIOAZGZ-UHFFFAOYSA-N |
M.W : | 104.08 | Pubchem ID : | 2782524 |
Synonyms : |
|
Signal Word: | Danger | Class: | 3,6.1 |
Precautionary Statements: | P273-P260-P210-P370+P378-P391-P301+P310+P330 | UN#: | 1992 |
Hazard Statements: | H301-H372-H411-H225 | Packing Group: | Ⅱ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
14.1%; 70.9% | With dichloro[bis(2-(diphenylphosphino)phenyl)ether]palladium(ll); triethylamine; at 100℃; under 7500.75 Torr; for 13h;Autoclave; | 8.98 g (71.87 mmol) of 1-bromo-1-fluoroethene, 8.01 g (79.2 mmol) of triethylamine, 51.5 mg (0.072 mmol) of dichloro[bis(diphenylphosphinophenyl)ether]palladium (II), and 36 mE of non-dried methanol were placed in a 1 50-mE stainless autoclave, and 1.0 MPaG carbon monoxide was introduced thereto, followed by stirring at 100° C. for 13 hours. After completion of the reaction, the autoclave was cooled, and the unreacted gas was purged. The autoclave was opened, and 186 mg (1.0 mmol) of hexafluorobenzenewas added as an internal standard substance, followed by stirring. The mixture was then allowed to stand for a short period of time to precipitate the salt. The supernatant was diluted with deuterated chloroform, and subjected to quantification based on 19F-NMR integral values. The diluted supernatant was found to contain 50.93 mmol (yield: 70.9percent) of 2-fluoroacrylic acid methyl ester, 10.13 mmol (yield:14.1percent) of 2-fluoroacrylic acid, and 8.12 mmol (recovery:11.3percent) of unreacted 1 -bromo-1 -fluoroethene. The conversion was 87.5percent, and the selectivity was 81.0percent. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | With thionyl chloride; at 5 - 35℃; for 2h; | 8.64 g (0.096 mol) of <strong>[430-99-9]2-fluoroacrylic acid</strong> was mixed in a 100 ml three-necked flask at 5-10 ° C,And 13.1 g (0.11 mol) of thionyl chloride were added, the temperature was raised to 30 ° C, 6.4 g (0.2 mol) of methanol was added dropwise,Insulation 30-35 reaction 2h,The system was neutralized by adding aqueous NaHCO3 solution,20 g (0.23 mol) of methyl t-butyl ether was added for extraction,The organic phase was distilled to give methyl 2-fluoroacrylate. Yield 93percent. |
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