m-Chloroperbenzoic acid → 3-[8-(2,6-difluorophenyl)-2-(methylsulfinyl)-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-4-yl]-4-methyl-N-1,3-thiazol-2-ylbenzamide

Participants

Reaction Steps

A solution of 3-[8-(2,6-difluorophenyl)-2-(methylthio)-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-4-yl]-4-methyl-N-1,3-thiazol-2-ylbenzamide (1.65 g, 3.16 mmol) in DCM (53 mL) was mixed with mCPBA (0.736 g, 4.75 mmol). The mixture was stirred at room temperature for about 10 minutes before directly loaded onto a column. Flash chromatography (mobile phase EtOAc/Hexane) then provided the title compound as a white solid 1.38 g (81%). MS (ES) m/z 538 (M+H)+; 1H-NMR (MeOD) δ 2.35 (s, 3 H), 2.81 (s, 3 H), 6.98 (d, J=10.0 Hz, 1 H), 7.30 (d, J=3.6 Hz, 1 H), 7.46 (t, J=8.6 Hz, 2 H), 7.57 (d, J=3.6 Hz, 1 H), 7.66 (d, J=8.0 Hz, 1 H), 7.72 (m, 1 H), 7.85 (d, J=10.0 Hz, 1 H), 8.25 (d, J=8.0 Hz, 2 H).

Provenance & Evidence