反应详情

A solution of dimethyl-(6-nitro-pyridin-3-yl)-amine (0.64 g, 3.83 mmol) in ethanol (45 mL) was treated with 10% palladium on activated carbon (203 mg). The reaction mixture was stirred under a positive pressure of hydrogen gas (balloon) at 25° C. and atmospheric pressure overnight. The catalyst was then filtered off through a pad of celite, and the celite pad was washed well with ethanol. The filtrate was concentrated in vacuo to afford N5,N5-dimethyl-pyridine-2,5-diamine (493.6 mg, 94%) as a dark red-purple oil: EI-HRMS m/e calcd for C7H11N3 (M+) 137.0953, found 137.0957.

1. customatmospheric pressure overnight
2. filtrationThe catalyst was then filtered off through a pad of celite
3. washthe celite pad was washed well with ethanol
4. concentrationThe filtrate was concentrated in vacuo