m-Chloroperbenzoic acid → 6-bromo-8-(2-cyclopropyl-6-fluorobenzyl)-2-methanesulfinyl-8H-pyrido[2,3-d]pyrimidin-7-one

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-bromo-8-(2-cyclopropyl-6-fluorobenzyl)-2-methylsulfanyl-8H-pyrido[2,3-d]pyrimidin-7-one (8, 500 mg, 1.2 mmol) in dichloromethane (20 mL) was added 3-chloroperbenzoic acid (77%, 253 mg, 1.1 mmol) in dichloromethane (15 mL) at 0-5° C. and the mixture was stirred at 0-5° C. for 1 h. The reaction mixture was washed with saturated sodium bicarbonate solution (2×30 mL) then with brine (30 mL). The organic layer was dried over sodium sulfate, filtered and evaporated. The crude product was purified by column chromatography eluting with chloroform to yield the title compound as a white solid (385 mg, 0.9 mmol, 74%). ESMS m/z 436 (M+H)+.

Provenance & Evidence