5-Nitro-2-[(3-pyridinylmethyl)sulfanyl]pyridine → 6-[(3-Pyridinylmethyl)sulfanyl]-3-pyridinylamine

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Reaction Steps

5-nitro-2-[(3-pyridinylmethyl)sulfanyl]pyridine (5.6 g) was dissolved in acetic acid (56 ml), reduced iron (16.8 g) was added to the mixture, and the mixture was stirred for 40 hours at room temperature. The mixture was filtered with Celite, and washed with ethyl acetate. The solvent was removed under reduced pressure, and the obtained residue was purified by silica gel column chromatography, to give 6-[(3-pyridinylmethyl)sulfanyl]-3-pyridinylamine (4.3 g).

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