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

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A suspension of 3″,5″-difluoro-5′-nitro-3,2′:3′,4″-terpyridin-6′-amine (0.2 g, 0.608 mmol) and 10% palladium on carbon (0.04 g) in a mixture of THF/ethanol 40:60 (8 mL) was stirred under hydrogen atmosphere at 2.76 bar. After 12 h, the mixture was filtered through Celite® and the filter cake was washed with ethanol and THF. The combined filtrate and washings were evaporated to give the title compound as a solid (0.180 g, 99%).

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