5-Bromopyridine-2,3-diamine → HCID 178422994, compound

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Reaction Steps

0.30 g 5-bromo-2,3-diaminopyridine and 0.212 g 2-methyl-pyridine-4-carboxylic acid were heated in 3 g polyphosphoric acid at 160° C. with stirring for 16 hrs. The mixture was diluted with water and insoluble components removed by filtration. Water was evaporated from the filtrate and the residue dispersed in pyridine. Again, insoluble components were removed by filtration and the filtrate evaporated. The obtained residue was washed thoroughly with water and dried.

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