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CAS No. : | 76-04-0 | MDL No. : | MFCD00004176 |
Formula : | C2HClF2O2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | OAWAZQITIZDJRB-UHFFFAOYSA-N |
M.W : | 130.48 | Pubchem ID : | 66154 |
Synonyms : |
|
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P501-P260-P234-P264-P280-P390-P303+P361+P353-P301+P330+P331-P363-P304+P340+P310-P305+P351+P338-P310-P406-P405 | UN#: | 3261 |
Hazard Statements: | H314-H290 | 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 |
---|---|---|
78.5% | With toluene-4-sulfonic acid; In dichloromethane; at 20 - 33℃; for 38.5h;Heating / reflux; | (VO 504. 3 G (3. 87MOL) CHLORDIFLUORESSIGSaURE UND 5. 0 G p-Toluolsulfonsaure werden in 775 ml Methylenchlorid gelost und bei Raumtemperatur innerhalb von 30min mit 311. 6 G (6. 76 MOL) Ethanol versetzt (Temperaturanstieg auf 33oC). Man ruhrt 38 h unter Ruckfluss am Wasserabscheider nach und kuhlt auf Raumtemperatur ab. Zur Aufarbeitung wascht man mit Wasser (200 ml), gesattigter Natriumhydrogencarbonatlosung (200 ml) und erneut mit Wasser (200 ml), trocknet uber Natriumsulfat, filtriert und destilliert das Losungsmittel ab. Anschliesend wird durch fraktionierte Destillation WEITER AUFGEREINIGT ;-- Man erhalt 488.9 g (98% ig, 78.5 % der Theorie) an Chlordifluoressigsaureethylester (Siedepunkt 94- 96oC). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium carbonate; In N,N-dimethyl-formamide; at 90.0℃; | Compound 15 (80 g, 0.42 mol) was dissolved in DMF (800 mL), and sodium carbonate (266 g, 2.5 mol) wasadded. The temperature was increased to 90 C. Chlorodifluoroacetic acid (191 g, 1.46 mol) was added dropwise. Afterthe completion of addition, temperature was maintained at 90 C to react overnight. The reaction solution is cooled toroom temperature, poured slowly into ice water, and extracted twice with ethyl acetate. The organic phases were combined,washed once with saturated brine, dried over anhydrous sodium sulfate, and spin-dried to obtain 95 g of crudeproduct, which was used directly in the next reaction. 1H NMR (400 MHz, CDCl3): delta 7.62-7.58 (m, 1H), 7.04-7.01 (m,1H), 6.93-6.88 (m, 1H), 6.57 (t, J = 72.8 Hz, 1H); MS (ESI) (m/z): [M+H]+ 240.9. |
[ 1895-39-2 ]
Sodium 2-chloro-2,2-difluoroacetate
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[ 1895-39-2 ]
Sodium 2-chloro-2,2-difluoroacetate
Similarity: 0.97
[ 1895-39-2 ]
Sodium 2-chloro-2,2-difluoroacetate
Similarity: 0.97