反应详情

To a solution of 1-allyl-N-(4-fluoro-5-((4-bromo-2-chlorophenyl)amino)benzo[d]oxazol-6-yl)cyclopropane-1-sulfonamide (100 mg, 0.38 mmol) in THF (10 mL) was added N-methylmorpholine-N-oxide (44 mg, 0.38 mmol) followed by osmium tetraoxide (10 mg, 0.04 mmol) and water (0.5 mL). After stirring at room temperature overnight, the mixture was concentrated and then diluted with EA. The organic layer was washed with water, saturated NaHCO3 (aq.) and brine sequentially, dried over Na2SO4, filtered and concentrated to give a residue, which was purified by flash chromatography to give the product as white solid (30 mg, 28.2% yield). 1H NMR (400 MHz, CDCl3): δ 8.10 (s, 1H), 7.98 (s, 1H), 7.45-7.34 (m, 2H), 7.32-7.21 (m, 1H), 6.83 (s, 1H), 6.44-6.30 (m, 1H), 4.41-4.25 (m, 2H), 4.21-4.12 (m, 1H), 3.72-3.62 (m, 1H), 2.85-2.78 (m, 1H), 1.32-1.26 (m, 2H), 1.16-1.21 (m, 4H). MS APCI (+) m/z: 535.8, [M+H].

1. concentrationthe mixture was concentrated
2. additiondiluted with EA
3. washThe organic layer was washed with water, saturated NaHCO3 (aq.) and brine sequentially
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. customto give a residue, which
8. customwas purified by flash chromatography