反应详情

To a cold (0° C.) suspension of 1-methylnaphthalene (5 g) in HNO3 was added H2SO4 (5 mL) dropwise. After stirring the reaction for one hour, the solution was diluted with ethyl acetate and washed with water (3×), aqueous saturated NaHCO3 (2×) and brine, dried over MgSO4, and concentrated. The product was purified by silica gel column chromatography using ethyl acetate:hexane (5:95) and recrystallized from methanol to give yellow needles.

1. customthe reaction for one hour
2. washwashed with water (3×), aqueous saturated NaHCO3 (2×) and brine
3. dry with materialdried over MgSO4
4. concentrationconcentrated
5. customThe product was purified by silica gel column chromatography
6. customrecrystallized from methanol
7. customto give yellow needles