2-Aminopyridine → HCID 53232452, compound

Participants

Reaction Conditions

Reaction Steps

To a 10-ml microwave vessel was added, 2,5-dichloro-6-[(5-methyl-1H-pyrazol-3-yl)amino]nicotinonitrile (Method 60, 8 mmol), [(1S)-1-(5-fluoropyridin-2-yl)ethyl]amine (Method 33, 8 mmol, 97 wt % solution in dioxane), DIEA (0.3 ml, 1.66 mmol), and n-butanol (4 ml). The vessel was then sealed and subjected to microwave heating at 150° C. for 3 hours. After 3 hours, more 2-pyridyl amine (100 mg, 0.69 mmol) was added. The resulting mixture was purified by silica gel chromatography (Biotage Horizon System) using an isocratic system of 15:0.5:0.5% of DCM/EtOAc/MeOH to give 312 mg of the title compound. 1H NMR: 12.04 (br s, 1H), 8.41-8.63 (m, 2H), 7.84 (s, 1H), 7.56-7.71 (m, 1H), 7.40 (dd, J=8.67, 4.14 Hz, 1H), 7.28 (s, 1H), 5.86 (s, 1H), 5.06-5.25 (m, 1H), 2.17 (s, 3H), 1.51 (d, J=7.54 Hz, 3H). MS: Calcd.: 371/373. Found: [M+H]+ 372/374.

Provenance & Evidence