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CAS No. : | 23945-44-0 | MDL No. : | MFCD00075737 |
Formula : | C5H4N2O4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | ZXYAAVBXHKCJJB-UHFFFAOYSA-N |
M.W : | 156.10 | Pubchem ID : | 90301 |
Synonyms : |
Uracil 5-carboxylic acid;Isoorotic acid;5-Carboxyuracil
|
Chemical Name : | 2,4-Dihydroxypyrimidine-5-carboxylic acid |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
65% | With N,N-diethylaniline; trichlorophosphate; In N,N-dimethyl-formamide; at 90℃; for 2.66667h;Under cold conditions; | To 10.0 g (64.06 mmol) of uracil-5-carboxylic acid (Aldrich Chemical Company) partially dissolved in 20 mL of DMF are added, under cold conditions, 59.7 mL (0.64 mol) of phosphorus oxychloride and 10.3 mL (64.7 mmol) of N,N-diethylaniline, and the mixture is then heated at 90° C. for 2 hours 40 minutes.After cooling to room temperature and evaporating off half the excess POCl3, the medium is poured onto ice and then extracted with ether.The ether phases are combined, dried over sodium sulfate, filtered and concentrated under vacuum. 8.1 g (41.97 mmol) of 2,4-dichloro-5-pyrimidinecarboxylic acid are obtained in a yield of 65percent. |
With N,N-dimethyl-aniline; trichlorophosphate; at 110℃; for 4h;Cooling with ice; | To a 25 ml three-necked flask was added uracil-5-carboxylic acid (1 g, 6.4 mmol)N, N-dimethylaniline (1.09 g, 9. 0 mmol) was added dropwise to a solution of phosphorus oxychloride (9.83 g, 64. lmmol) under ice-cooling.After the dropwise addition, the ice bath was heated to 110 ° C for 4 hours. After the reaction solution was cooled, it was slowly added to the ice water for quenching.The aqueous phase was extracted with ethyl acetate and the organic phase was washed twice with water, once with saturated brine, dried over anhydrous sodium sulfate and concentrated to give 960 mg of crude oil as an oil, 2,4-dichloro-5-pyrimidinecarboxylic acid Purification is used directly for the next step |
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