反应详情

To a solution of 1,1-dimethylethyl[6-(trifluoromethyl)-2-pyridinyl]acetate (698 mg, 2.67 mmol), triethylsilane (1.067 mL, 6.68 mmol) in Dichloromethane (DCM) (10 mL) was added TFA (2.68 mL, 34.7 mmol) dropwise via syringe. The reaction was stirred overnight at room temperature. LCMS analysis indicated good conversion, so the reaction was concentrated to a yellow oil. 5 mL of diethyl ether was added but no precipitation occurred, so the solution was concentrated to afford [6-(trifluoromethyl)-2-pyridinyl]acetic acid (535 mg, 2.61 mmol, 98% yield) as a yellow oil which solidified to a yellow solid. LC-MS (ES) m/z=206 [M+H]+. 1H NMR (400 MHz, DMSO-d6) δ ppm 3.89 (s, 2H), 7.70 (d, J=7.83 Hz, 1H), 7.81 (d, J=7.58 Hz, 1H), 7.97-8.16 (m, 1H), 12.26-12.88 (br. s., 1H).

1. concentrationso the reaction was concentrated to a yellow oil
2. addition5 mL of diethyl ether was added
3. customno precipitation
4. concentrationwas concentrated