3''-Fluoro-5'-nitro-3,2':3',4''-terpyridin-6'-amine → 3''-Fluoro-3,2':3',4''-terpyridine-5',6'-diamine

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A suspension of 3″-fluoro-5′-nitro-3,2′:3′,4″-terpyridin-6′-amine (2.25 g, 7.23 mmol) and 10% palladium on carbon (0.4 g) in a mixture of THF/ethanol 40:60 (100 mL) was stirred under hydrogen atmosphere. After 3 h, the mixture was filtered through Celite® and the filter cake was washed with ethanol. The combined filtrate and washings were evaporated to give the title compound as a solid (2.01 g, 99%).

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