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CAS No. : | 16097-62-4 | MDL No. : | MFCD00153191 |
Formula : | C6H5F3N2OS | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BRLPDRZKOMZVOY-UHFFFAOYSA-N |
M.W : | 210.18 | Pubchem ID : | 135410006 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P264-P271-P280-P302+P352-P304+P340+P312-P305+P351+P338-P332+P313-P337+P313-P362-P403+P233-P405-P501 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
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 |
---|---|---|
45% | With iron(III) chloride; sulfuryl dichloride; acetic anhydride; In acetic acid; at 110℃; for 6.0h; | A solution of 2- (methylthio) -6- (trifluoromethyl) pyrimidin-4-ol (210 mg, 1 mmol) in AcOH (3 mL) was added Ac2O (0.2 ml) , FeCl3 (40 mg) and SO2Cl2 (150 mg) . Then refluxed at 110 for 6 h. The reaction mixture was cooled to room temperature, and solvent was removed in vacuo. The residue was extracted by DCM and icy H2O 3 times. The organic layer was combined, washed with brine, dried over Na2SO4 and concentrated to give 110 mg of 5-chloro-2- (methylthio) -6- (trifluoromethyl) pyrimidin-4-ol (162-01) as a light yellow oid (45) . Mass (m/z) : 245.5 [M+H] + |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With trichlorophosphate; at 120℃; for 3.0h; | A solution of 2- (methylthio) -6- (trifluoromethyl) pyrimidin-4-ol (43-01) (1.4g, 6.67mmol) in POCl3 (15mL) was refluxed at 120 for 3hrs. The reaction mixture was cooled to room temperature, and POCl3 was removed in vacuo. The residue was extracted by DCM and icy H2O 3 times. The organic layer was combined, washed with brine, dried over Na2SO4 and concentrated to give 1.38g of 4-chloro-2- (methylthio) -6- (trifluoromethyl) pyrimidine as a light yellow oid (90) . LC-MS (ESI) m/z: calcd for [C6H5ClF3N2S+] , 229.0, found 229.0. |
With thionyl chloride;N,N-dimethyl-formamide; In toluene; at 80℃; for 1.0h; | To a mixture of 20 ml of toluene, 5 g of 2-methylthio- 6-trifluoromethylpyrimidin-4-ol and 0.37 g of N, N- dimethylformamide, 5.7 g of thionyl chloride was slowly added dropwise at 800C. This mixture was stirred at 800C for 1 hour. The reaction mixture was left standing to cool to room1"temperature, poured into water and then extracted three times with tert-butyl methyl ether. The organic layer was washed in turn with an aqueous saturated sodium hydrogen carbonate solution and saturated brine, dried over anhydrous magnesium sulfate and then concentrated to obtain a crude product. This crude product was used in the next step without purification. | |
With trichlorophosphate; at 120℃; for 5.0h;Inert atmosphere; | 2-(Methylthio)-6-(trifluoromethyl)pyrimidin-4-ol 13a (100 mg, 0.21 mmol) was dissolved in phosphorus oxychloride (20 mL). The reaction solution was reacted under a nitrogen atmosphere at 120C for 5 hours. After the reaction was completed, the reaction solution was concentrated under reduced pressure to obtain the title compound 13b (4 g, crude product) as a yellow solid, which was used directly in the next step without purification. |
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