Diisopropylethylamine → N-{2-chloro-5-fluoro-6-[(5-methyl-1H-pyrazol-3-yl)amino]pyrimidin-4-yl}-N-methylmethanesulfonamide

Participants

Reaction Conditions

Reaction Steps

To a solution of N-(2,6-dichloro-5-fluoropyrimidin-4-yl)-N-methylmethanesulfonamide (Method 31, 914 mg, 3.35 mmol) in n-BuOH (3 ml) was added 5-methyl-1H-pyrazol-3-amine (351 mg, 3.62 mmol, 97% purity) and DIPEA (1.2 ml, 6.9 mmol). The mixture was heated at 50° C. overnight. LC/MS showed the completion of the reaction. The solvent was evaporated and the residue was purified by silica gel chromatography (by ISCO Combiflash with gradient 0-5% methanol in DCM with 1% NH4OH) to afford the title compound as a light yellow solid (1.06 g, 95%). LC-MS, 335 (M+1). NMR (DMSO-d6, 400 MHz) δ12.27 (s, 1H), 10.53 (s, 1H), 6.32 (s, 1H), 3.27 (s, 3H), 3.20 (s, 3H), 2.25 (s, 3H).

Provenance & Evidence