反应详情

温度

60 °C

A mixture of 4-chloro-3-trifluoromethyl-benzenesulfonyl chloride (1.5 g, 5.3 mmol) and 2-bromo-5-chloro-pyridin-3-ylamine (500 mg, 2.4 mmol) dissolved in pyridine (20 mL) was heated at 60° C. for 16 h. The solvent was evaporated and the residue suspended in a 1:1 mixture of 2 M NaOH and methanol (20 mL) and heated at 70° C. for 30 min. The methanol was evaporated under reduced pressure and the residue diluted with 15 mL water. The solution was cooled on ice bath and the pH was adjusted to 3 by drop wise addition of concentrated HCl. The solid formed was collected by filtration and the product was purified by flash chromatography on silica gel column to afford the desired product. MS m/z: 450.8 (M+H).

1. customThe solvent was evaporated
2. additionthe residue suspended in a 1:1 mixture of 2 M NaOH and methanol (20 mL)
3. temperatureheated at 70° C. for 30 min
4. customThe methanol was evaporated under reduced pressure
5. additionthe residue diluted with 15 mL water
6. temperatureThe solution was cooled on ice bath
7. additionthe pH was adjusted to 3 by drop wise addition of concentrated HCl
8. customThe solid formed
9. filtrationwas collected by filtration
10. customthe product was purified by flash chromatography on silica gel column