反应详情

温度

60 °C

Combined tert-butyl 2-(4-cyano-2-fluorophenyl)acetate (227.3 mg, 0.966 mmol) with EtOH (5 mL) and added a 4M hydrogen chloride solution in dioxane (0.121 mL, 0.483 mmol) and stirred in a heating block at 60° C. for 16 h. Then the reaction mixture was concentrated via rotary evaporation and re-constituted in EtOH (5 mL). An additional portion of a 4M hydrogen chloride solution in dioxane (17.61 mg, 0.483 mmol) was added to the vial and the mixture was stirred at 60° C. for an additional 1 h. The reaction mixture was then concentrated via rotary evaporation and dried in vacuo to give the title compound (198 mg, 99% yield) as a yellow oil. 1H NMR (400 MHz, chloroform-d) δ ppm 1.27 (t, J=7.07 Hz, 3H) 3.72 (d, J=1.26 Hz, 2H) 4.19 (q, J=7.24 Hz, 2H) 7.36-7.40 (m, 1H) 7.40-7.43 (m, 1H) 7.43-7.46 (m, 1H). MS m/z [M+H]+ 208.0.

1. concentrationThen the reaction mixture was concentrated via rotary evaporation and re-constituted in EtOH (5 mL)
2. stirringwas stirred at 60° C. for an additional 1 h
3. concentrationThe reaction mixture was then concentrated via rotary evaporation
4. customdried in vacuo