反应详情

A mixture of 2-(methylthio)-6-((6-(trifluoromethyl)-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazole (200 mg, 0.53 mmol) and m-CPBA (114 mg, 0.66 mmol) in DCM (5 mL) was stirred in an ice-water bath for 2 h. The mixture was diluted with DCM and washed with aq Na2S2O3, aq NaHCO3 and water. The organic layer was dried over Na2SO4, filtered and concentrated under reduced pressure to afford 2-(methylsulfinyl)-6-((6-(trifluoromethyl)-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazole as a yellow solid (180 mg, 87.8%). 1H NMR (300 MHz, DMSO-d6) δ 8.91 (s, 1H), 8.77 (s, 1H), 8.59 (s, 1H), 8.23 (s, 1H), 8.08 (d, J=8.1 Hz, 1H), 7.66-7.62 (m, 1H), 5.77 (s, 2H), 3.06 (s, 3H). LCMS (ESI) m/z 397 (M+H)+.

1. washwashed with aq Na2S2O3, aq NaHCO3 and water
2. dry with materialThe organic layer was dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure