Hydrogen Bromide → HCID 19705067, 화합물

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2,4-Diamino-6-benzyloxymethyl-5-(2,4-dichlorophenyl)pyrimidine (Example 26) (6.5 g) was dissolved in a 47% solution of hydrobromic acid in acetic acid (75 ml) and the mixture stirred and heated at 100° C. for 6 hours. After standing at room temperature overnight the dihydrobromide salt was filtered off, washed with ether and dried in vacuo, 6 g. To a stirred solution of the dihydrobromide salt (0.43 g) in dimethylsulphoxide (4 ml) was added dropwise a solution of sodium bicarbonate (0.84 g) in water (10 ml). After 30 minutes the precipitate was filtered off washed with water then ether and dried in vacuo, 0.26 g, mp.>270° C. (decomposes).

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