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CAS No. : | 406-93-9 | MDL No. : | MFCD00077604 |
Formula : | C4H5F3O2 | Boiling Point : | No data available |
Linear Structure Formula : | CF3CH2CH2COOH | InChI Key : | WTUCTMYLCMVYEX-UHFFFAOYSA-N |
M.W : | 142.08 | Pubchem ID : | 2777085 |
Synonyms : |
|
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | 3261 |
Hazard Statements: | H314 | 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 |
---|---|---|
41% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 0 - 27℃; for 16h; | To a solution of Intermediate 31 (750 mg, 3.0 mmol), 4,4,4-trifluorobutanoic acid (COMBIBLOCKS, 477 mg, 3.36 mmol) in DMF (10 mL) were added DMAP (AVRA, 1 1 17 mg, 9.162 mmol) and EDC.HCI (SILVERY CHEMICALS, 1458 mg, 7.63 mmol) at 0 °C. The reaction mixture was allowed to 27 °C and stirred for 16 h. The reaction mixture was quenched with ice cold water (100 mL) and extracted with EtOAc (3 x 30 mL). The organic layer was washed with brine (30 mL), dried over (anh) Na2S04, filtered and the filtrate was evaporated under reduced pressure. The crude was purified by silica chromatography column using a linear gradient of petroleum ether/EtOAc as eluents to yield the title compound (410 mg, 41 percent) as a colorless liquid. 1 H NMR (400 MHz, CDCI3) delta ppm: 6.55-6.40 (m, 1 H), 4.15- 3.96 (m, 2H), 3.69-3.43 (m, 2H), 2.63-2.42 (m, 4H), 2.35-2.22 (m, 2H), 1.31 -1 .22 (m, 12H). [ES+ MS] m/z 332 (MH-). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
42% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 0 - 26℃; for 16.0h; | General procedure: To a solution of Intermediate 75 (800 mg, 4.102 mmol) in DMF (15 mL) were added EDC.HCI (SILVARY, 1.95 g, 10.256 mmol), 4,4,4-trifluorobutanoic acid (OAKWOOD, 699 mg, 4.923 mmol) at 0 C, followed by the addition of DMAP (AVRA, 1.5 g, 12.307 mmol) at 0 C. The resultant reaction mixture was allowed to 26 C and stirred for 16 h at the same temperature. The reaction mixture was diluted with ice cold water (200 mL) and extracted with EtOAc (3 x 150 mL). Combined organic layers were washed with brine solution (100 mL), dried(anh) Na2S04, filtered and concentrated under reduced pressure. The crude was purified by silica chromatography column using a linear gradient of petroleum ether/EtOAc as eluents to yield the title compound (500 mg, 42%) as a colorless gum. 1H NMR (400 MHz, CDCI3) delta ppm: 7.71-7.65 (m, 2H), 7.45-7.39 (m, 2H), 4.64-4.42 (m, 2H), 4.20-4.05 (m, 2H), 3.94-3.87 (m, 1 H), 2.58-2.43 (m, 2H), 2.41-2.34 (m, 2H). [ES+ MS] m/z 283 (MH+). |
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