反应详情

温度

40 °C

To a solution of 2-methyl-3-(methyloxy)aniline (Intermediate 58, 1.31 g) in H2SO4 (6 M, 100 mL) was added portionwise NaNO2 (794 mg, 11 mmol) at 0° C. The mixture was stirred for another 2 hours at 40° C. and water (100 mL) was added. The resulting mixture was extracted with ethyl acetate (3 times 100 mL) and the combined ethyl acetate phases were dried and evaporated. The residue was purified by silica gel column chromatography (PE:EtOAc=5:1) to afford the title compound as a solid (569 mg).

1. extractionThe resulting mixture was extracted with ethyl acetate (3 times 100 mL)
2. dry with materialthe combined ethyl acetate phases were dried
3. customevaporated
4. customThe residue was purified by silica gel column chromatography (PE:EtOAc=5:1)