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CAS No. : | 1247503-48-5 | MDL No. : | MFCD16697752 |
Formula : | C8H6F3NO3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | ANLJLNWTEWVWCP-UHFFFAOYSA-N |
M.W : | 221.13 | Pubchem ID : | 21253041 |
Synonyms : |
|
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 |
---|---|---|
45% | With potassium carbonate; In ISOPROPYLAMIDE; at 20.0℃; for 4.0h; | A mixture of <strong>[1247503-48-5]6-(2,2,2-trifluoroethoxy)picolinic acid</strong> (2.40 g, 10.9 mmol, Step-1), methyl iodide (3.39 mL, 54.3 mmol) and potassium carbonate (4.50 g, 32.6 mmol) in N,N-dimethylacetamide (54 mL) is stirred at room temperature for 4 hours. The reaction mixture is poured into water (100 mL) and extracted with n-hexane / ethyl acetate (1:10, 100 mL). The organic layer is washed with water (100 mL), dried over sodium sulfate, and concentrated in vacuo. The residue is purified by column chromatography on silica gel eluting with n-hexane / ethyl acetate (5:1) to give 1.14 g (45% yield) of the title compound as colorless oil.1H-NMR (270 MHz, CDCl3) delta 7.82-7.74 (2H, m), 7.06 (1H, dd, J = 7.3, 2.0 Hz), 4.86 (2H, q, J = 8.6 Hz), 3.96 (3H, s), MS (ESI) m/z: 236 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With sulfuric acid; at 20.0℃; for 20.0h; | To a solution of <strong>[1247503-48-5]6-(2,2,2-trifluoroethoxy)picolinic acid</strong> (2.2 g, 10 mmol, 1.0 equiv) in methanol (20 mL) were added 2 drops of H2SO4 (con.). The mixture was stirred at 20C for 20 hours, diluted with H2O (100 mL) and extracted with DCM (3*20 mL). The combined organic phase was dried over anhydrous sodium sulfite and concentrated in vacuo. The residue was purified by silica gel chromatography (PE/EA = 20/1) to afford the title compound methyl 6-(2,2,2-trifluoroethoxy)picolinate as a colorless oil (2.1 g, 88% yield). LC-MS: m/z 236.1 (M+H)+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With copper(l) iodide; caesium carbonate; ethyl 2-oxocyclohexane carboxylate; at 78.0℃; for 20.0h;Inert atmosphere; | The mixture of methyl 6-bromopicolinate (4.3 g, 20 mmol, 1.0 equiv), ethyl 2- oxocyclohexane-l-carboxylate (680 mg, 4 mmol, 0.2 equiv), Cul (380 mg, 2 mmol, 0.1 equiv) and CS2CO3 (9.1 g, 28 mmol, 1.4 equiv) in 2,2,2-trifluoroethan-l-ol (14.0 g, 280 mmol, 14 equiv) was heated under nitrogen atmosphere at 78 C for 20 hours. The reaction mixture was cooled to 20C and poured into water (200 mL). The mixture was adjusted to pH = 5 with 1N HC1 (aq.) and extracted with DCM (3*20 mL). The combined organic phase was dried over anhydrous sodium sulfate and concentrated in vacuo to afford the title compound 6-(2,2,2-trifluoroethoxy)picolinic acid as yellow solid (3.3 g, 74% yield). LC-MS: m/z 222.0 (M+H) + |
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