反应详情

A solution of N-(4-((2-methyl-6-nitropyridin-3-yl)oxy)pyridin-2-yl)isobutyramide (0.55 g, 1.739 mmol) in 2:1 EtOAc/MeOH (30 mL) was treated with palladium on carbon (50% wet, 0.206 g, 0.174 mmol) and hydrogenated (1 atm) for 2 days. The solids were removed via filtration through diatomaceous earth, washed well with MeOH and the filtrate was concentrated to dryness to afford N-(4-((6-amino-2-methylpyridin-3-yl)oxy)pyridin-2-yl)isobutyramide (410 mg, 82%). 1H NMR (400 MHz, DMSO-d6): δ 10.41 (s, 1H), 8.12 (d, J=5.7 Hz, 1H), 7.57 (d, J=2.4 Hz, 1H), 7.16 (d, J=8.7 Hz, 1H), 6.58 (dd, J=5.7, 2.4 Hz, 1H), 6.35 (d, J=8.7 Hz, 1H), 5.95 (s, 2H), 2.69 (m, 1H), 2.04 (s, 3H), 1.02 (d, J=6.8 Hz, 6H); MS (ESI) m/z: 287.2 (M+H+).

1. customThe solids were removed via filtration through diatomaceous earth
2. washwashed well with MeOH
3. concentrationthe filtrate was concentrated to dryness