Ethyl Acetate → HCID 67499549, compound

Participants

Reaction Steps

To a solution of 3-fluoro-5-(3-methyl-4-nitro-1H-pyrazol-1-yl)pyridine (3.133 g, 14.10 mmol) in ethanol (28.2 ml) was added ethyl acetate until all of the starting material went into solution. The solution was degassed and 10% palladium on carbon (0.750 g, 0.705 mmol) was added and the reaction was stirred in a parr hydrogenator at 40 psi for 3 hours. The solution was filtered through celite with ethyl acetate and concentrated to give 1-(5-fluoropyridin-3-yl)-3-methyl-1H-pyrazol-4-amine (2.000 g, 10.41 mmol, 73.8%) as a brown solid: mp 136.0-138.0° C.; 1H NMR (400 MHz, CDCl3) δ 8.67-8.59 (m, 1H), 8.27 (d, J=2.5 Hz, 1H), 7.73 (dt, J=9.9, 2.3 Hz, 1H), 7.45 (s, 1H), 3.01 (s, 2H), 2.28 (s, 3H); EIMS m/z 192.

Provenance & Evidence