反应详情

温度

0 °C

3-Chloro-5-hydroxybenzonitrile (20.0 g, 130 mmol) was dissolved in anhydrous THF (500 mL) and cooled to 0° C. Sodium hydride (60% dispersion in oil, 4.81 g, 125 mmol) was added and stirred for 30 minutes. 2,3,4-Trifluoronitrobenzene (23.06 g, 130 mmol) was added and the reaction was allowed to warm to RT. Stirring was continued until TLC showed no remaining starting material. The reaction mixture was poured into a mixture of 10% HCl and ice. Ethyl acetate was added and the organic layer was separated, dried over MgSO4, filtered and evaporated. The resulting oil was triturated with hexanes and Et2O to afford a solid. The washing were collected, evaporated and triturated with hexanes. The materials were combined to afford the title compound (30 g, 74%) as a solid. 1H NMR (400 MHz, CDCl3): δ ppm 7.98 (ddd, 1H), 7.43 (t, 1H), 7.34 (ddd, 1H), 7.21 (t, 1H), 7.08 (dd, 1H).

1. temperatureto warm to RT
2. stirringStirring
3. customthe organic layer was separated
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customevaporated
7. customThe resulting oil was triturated with hexanes and Et2O
8. customto afford a solid
9. customThe washing were collected
10. customevaporated
11. customtriturated with hexanes