反应详情

A solution of 1-[4-(3-amino-1H-pyrazolo[3,4-b]pyridin-6-yl)phenyl]-3-(2-fluoro-5-trifluoromethylphenyl)urea (80.0 mg, 0.186 mmol) in pyridine (2 ml) is cooled to 5° C. under argon and thiophene-3-carboxylic acid chloride (27 mg, 0.186 mmol, 1.0 eq.) is added. The mixture is stirred at ambient temperature for 5.5 h. Another equivalent of thiophene-3-carboxylic acid chloride (27 mg, 0.186 mmol) is added and the mixture is stirred at ambient temperature overnight. The reaction is taken up with water, and then extracted with ethyl acetate. The organic phase is washed twice with a salt solution, dried with magnesium sulphate, and concentrated. An orange yellow solid is then obtained. The crude is purified on a silica column, with an eluent gradient of 0% to 5% of methanol in dichloromethane. A beige solid is obtained:

1. stirringthe mixture is stirred at ambient temperature overnight
2. extractionextracted with ethyl acetate
3. washThe organic phase is washed twice with a salt solution
4. dry with materialdried with magnesium sulphate
5. concentrationconcentrated
6. customAn orange yellow solid is then obtained
7. customThe crude is purified on a silica column, with an eluent gradient of 0% to 5% of methanol in dichloromethane
8. customA beige solid is obtained