C(OC(=O)[NH:10][CH2:11][CH2:12][C:13]1[N:14]([CH3:26])[C:15](=[O:25])[CH:16]=[C:17]([C:19]2[CH:24]=[CH:23][N:22]=[CH:21][N:20]=2)[N:18]=1)C1C=CC=CC=1.[BrH:28]>C(O)(=O)C>[BrH:28].[NH2:10][CH2:11][CH2:12][C:13]1[N:14]([CH3:26])[C:15](=[O:25])[CH:16]=[C:17]([C:19]2[CH:24]=[CH:23][N:22]=[CH:21][N:20]=2)[N:18]=10.085 g (0.23 mmol) of [2-(1-methyl-6-oxo-1,6-dihydro-[4,4′]bipyrimidinyl-2-yl)-ethyl]-carbamic acid benzyl ester was dissolved in 0.164 g (1.16 mmol) of hydrobromide acid in acetic acid. The resulting mixture was stirred at room temperature for 2 h. The resulting precipitate was filtered, washed with diethyl ether and dried to afford 0.07 g of a yellow compound.
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