4-amino-1-benzyl-3-nitro-1H-pyridin-2-one → 3,4-diamino-1-benzyl-1H-pyridin-2-one

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Reaction Steps

3.9 g (15.9 mmol) of 4-amino-1-benzyl-3-nitro-pyridin-2-one, dissolved in 250 ml of tetrahydrofuran, were hydrogenated over platinum oxide at 50 psi of H2 pressure and at ambient temperature. After the catalyst had been filtered off the filtrate was concentrated by evaporation and the residue was further processed in crude form.

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