反应详情

温度

120 °C

A mixture of 0.5 g (1.17 mmol) 4-{6-bromo-8-[(2-methylpropyl)amino]imidazo[1,2-a]pyrazin-3-yl}-N-cyclopropylbenzamide (intermediate example 6-1), 345 mg (4-ethenylphenyl)boronic acid, 17 mL n-propanol, 1.75 mL of an aqueous 2M potassium carbonate solution, 15 mg triphenylphosphine, and 82 mg bis(triphenylphosphine)palladium was stirred at 120° C. for 2 hours. The solution was cooled, water added and extracted with dichloromethane. The organic phase was dried over sodium sulfate. After filtration and removal of solvent the residue was subjected to a column chromatography on silica gel to give 509 mg (97%) of the title compound. 1H-NMR (CDCl3): δ=0.67 (2H), 0.92 (2H), 1.06 (3H), 1.08 (3H), 2.09 (1H), 2.95 (1H), 3.58 (2H), 5.28 (1H), 5.80 (1H), 6.13 (1H), 6.34 (1H), 6.75 (1H), 7.47 (2H), 7.59 (1H), 7.65 (2H), 7.87 (2H), 7.92 (2H), 7.95 (1H) ppm.

1. temperatureThe solution was cooled
2. extractionextracted with dichloromethane
3. dry with materialThe organic phase was dried over sodium sulfate
4. filtrationAfter filtration and removal of solvent the residue