m-Chloroperbenzoic acid → HCID 56848631, compound

Participants

Reaction Conditions

Reaction Steps

To 7-cyclopropyl-2-(difluoro(5-fluoropyridin-2-yl)methyl)-4-(methylthio)quinazoline from Step A (137 mg, 0.378 mmol) in DCM (5 mL) at 0° C. was added 70% meta-chloroperoxybenzoic acid (139 mg, 0.567 mmol). The mixture was stirred for at 0° C. for 20 min, then DCM (15 mL) was added and the mixture was washed with saturated aq NaHCO3 (20 mL) and saturated aq sodium thiosulfate (20 mL). The organic layer was dried over Na2SO4 and concentrated under reduced pressure. To the residue was added 5-methyl-1H-pyrazol-3-amine (0.107 g, 1.01 mmol) in THF (5 mL) and the mixture was stirred at room temperature for 40 min and then concentrated under reduced pressure. The residue was purified by reverse phase HPLC (Phenomenex C-18 reverse phase column, eluted with gradient of solvent B=0.05% AcOH/CH3CN and solvent A=0.05% aq AcOH) to afford 7-cyclopropyl-2-(difluoro(5-fluoropyridin-2-yl)methyl)-N-(5-methyl-1H-pyrazol-3-yl)quinazolin-4-amine (12 mg, 8%) 1H NMR (300 MHz, DMSO-d6) δ 12.07-12.19 (m, 1H), 10.51-10.63 (m, 1H), 8.66 (s, 1H), 8.54 (d, J=8.7 Hz, 1H), 7.94-8.04 (m, 2H), 7.51 (s, 1H), 7.36 (d, J=8.7 Hz, 1H), 5.97 (s, 1H), 2.10-2.21 (m, 4H), 1.09 (dd, J=2.3, 8.1 Hz, 2H), 0.87-0.94 (m, 2H); LC-MS (ESI) m/z 411 (M+H)+

Provenance & Evidence