反应详情

温度

0 °C

A 250 mL round-bottomed flask was charged with 3-(4-(trifluoromethyl)phenoxy)pyridin-2-amine (1.24 g, 4.88 mmol) and CHCl3 (150 mL), cooled to 0° C. and bromine (0.275 mL, 5.37 mmol) was added dropwise. The reaction was stirred for 60 minutes. The reaction was quenched into a saturated aqueous NaHCO3 solution and extracted with CH2Cl2 (2×150 mL). The combined organics were dried over sodium sulfate, filtered and concentrated. The residue was purified on silica gel eluting with 20% EtOAc/hexanes. The combined fractions of product were treated with charcoal, filtered through GFF paper and concentrated to afford the title compound (0.850 g, 52.3% yield) as a tan solid.

1. customThe reaction was quenched into a saturated aqueous NaHCO3 solution
2. extractionextracted with CH2Cl2 (2×150 mL)
3. dry with materialThe combined organics were dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified on silica gel eluting with 20% EtOAc/hexanes
7. additionThe combined fractions of product were treated with charcoal
8. filtrationfiltered through GFF paper
9. concentrationconcentrated