反应详情

Added tin(II) chloride dihydrate (6.13 g, 27.1 mmol) to a stirring solution/suspension of 4-(2-(2,6-dimethyl-3-nitrophenoxy)pyridin-3-yl)pyrimidine (1.75 g, 5.43 mmol) in methanol (20.0 ml). Heated reaction mixture to 65° C. for 1.25 hours. Filtered hot suspension through Celite which was washed with 20 mL MeOH and 200 mL EtOAc. The organic solution was then extracted with 3×100 1N HCl. The acidic aqueous phase was then basified with 5N NaOH and allowed to stand for 5 minutes. The aqueous phase was then extracted with 3×150 mL portions of CHCl3 which was collected as a bright red-orange solution, dried over sodium sulfate and concentrated in vacuo to afford a brown solid. This was purified by column chromatography (10-100% (2.0 M NH3 in MeOH) in dichloromethane) and concentrated to afford 2,4-dimethyl-3-(3-(pyrimidin-4-yl)pyridin-2-yloxy)benzenamine as a bright red-orange solid. MS m/z=293 (M+H)+. Calc'd for C17H16N4O: 292.34.

1. temperatureHeated
2. customreaction mixture to 65° C. for 1.25 hours
3. filtrationFiltered hot suspension through Celite which
4. washwas washed with 20 mL MeOH and 200 mL EtOAc
5. extractionThe organic solution was then extracted with 3×100 1N HCl
6. extractionThe aqueous phase was then extracted with 3×150 mL portions of CHCl3 which
7. customwas collected as a bright red-orange solution
8. dry with materialdried over sodium sulfate
9. concentrationconcentrated in vacuo
10. customto afford a brown solid
11. customThis was purified by column chromatography (10-100% (2.0 M NH3 in MeOH) in dichloromethane)
12. concentrationconcentrated