The mixture of 5-chloro-7-(3,4-dimethoxyphenyl)-imidazo[1,2-c]pyrimidine (57.94 mg, 0.2 mmol), 4-aminomethylpyridine (23.79 mg, 0.22 mmol), and diisopropylethylamine (38.78, 0.3 mmol) in 2-propanol was stirred at 90° C. for 20 h, and cooled to room temperature. The solvent was evaporated, and 5 ml of ice water was added. Then the resulting product was extracted with 2×10 ml of ethyl acetate. The combined extract was dried over MgSO4. Then the solvent was evaporated and 2 ml of ether was added. The produced solid was collected by filtration and dried to give pure product (38 mg, 52.6%) of [7-(3,4-dimethoxy-phenyl)-imidazo[1,2-c]pyrimidin-5-yl]pyridin-4-ylmethyl-amine.
