反应详情

N-(2-Methylphenyl)-7-vinyl-1-benzofuran-5-sulfonamide (1.03 g, 3.3 mmol; Intermediate 59) was dissolved in dioxane (30 mL) and 2,6-lutidine (0.8 mL). Osmium tetroxide (84 mg, 0.33 mmol) was added with stirring followed by a solution of sodium periodate (2.82 g, 13.2 mmol) in water (10 mL). After stirring for 90 minutes, 1 M HCl (40 mL) was added followed by water (200 mL). The precipitated product was collected by filtration, washed with water and dried under vacuo. Yield: 0.95 g (91%) of an off white solid.

1. stirringAfter stirring for 90 minutes
2. filtrationThe precipitated product was collected by filtration
3. washwashed with water
4. customdried under vacuo