[N:1]1[CH2:2][CH:3]=[CH:4][CH:5]=[CH:6][C:7]=1[NH2:8].Cl.C(=O)([O-])[O-].[K+].[K+].[N:16]1[CH:21]=[CH:20][C:19]([C:22](=O)[CH2:23][C:24](OCC)=[O:25])=[N:18][CH:17]=1>C(O)C>[N:16]1[CH:21]=[CH:20][C:19]([C:22]2[N:8]=[C:7]3[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][N:1]3[C:24](=[O:25])[CH:23]=2)=[N:18][CH:17]=1
To a suspension of 77.9 g (524.1 mmol) of 2H-azepin-7-amine, 3,4,5,6-tetrahydro, monohydrochloride (synthesis as described in WO96/14844 or in Journal of Medicinal Chemistry (1998), 41(9), 1361-1366) in 390 mL of ethanol was added 72.4 g (524.1 mmol) of potassium carbonate. The reaction mixture was stirred at room temperature for 10 min, 101.7 g (524.1 mmol) of ethyl 3-(4-pyrimidinyl)-3-oxopropionate was added and the resulting mixture was stirred under reflux for 16 h. The cooled solution was evaporated to remove solvent. The mixture was dissolved in dichloromethane, washed with a saturated aqueous solution of sodium chloride, dried over sodium sulfate and evaporated to dryness. The residue was filtrate through a pad of silica, rinsing with dichloromethane and then ethyl acetate. After evaporation, the resulting solid was triturated in diethyl ether, filtrated to afford 36.4 g (28%) of the desired compound as a white-brown powder.
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