反应详情

2-Nitro-5-trifluoromethylphenol was prepared by adding concentrated HNO3 (6 mL) drop-wise to α,α,α-trifluoro-m-cresol (5 g, 30.8 mmol) at room temperature. After the addition was complete. the reaction was quenched with saturated ammonium acetate and extracted with EtOAc. The organic was separated, dried over sodium sulfate and filtered. Concentration of the solution in vacuo afforded an oil which was purified by column chromatography (gradient 100% hexane to 50% EtOAc/hexanes) to afford the titled compound as an oil(1.7 g, 27%). 1H NMR (CDCl3): 10.6 (s, 1H, OH), 8.26(d, 1H, J=7.8 Hz), 7.45(s, 1H, arom), 7.26(d, 1H, J=7.8 Hz).

1. custom2-Nitro-5-trifluoromethylphenol was prepared
2. additionAfter the addition
3. customthe reaction was quenched with saturated ammonium acetate
4. extractionextracted with EtOAc
5. customThe organic was separated
6. dry with materialdried over sodium sulfate
7. filtrationfiltered
8. customConcentration of the solution in vacuo afforded an oil which
9. customwas purified by column chromatography (gradient 100% hexane to 50% EtOAc/hexanes)