反应详情

3-Methoxyaniline 12 (5 gm, 0.041 moles) was dissolved in 30 ml tetrahydrofuran (THF) at room temperature under argon. Acetic anhydride (5.8 ml, 0.061 moles) was added. After stirring for 2 hours, the mixture was evaporated under reduced pressure, dissolved in several mls of toluene and purified by flash chromatography on silica gel, eluting with a mixture of ethyl acetate and hexane. 3-Methoxyacetanilide 13 (6.63 gm, 99% yield) was isolated after removing the solvent. 1H NMR (CDCl3) δ 7.6, 1H, br; 7.2, 2H, m; 6.95, 1H, d; 6.66, 1H, d; 3.78, 3H, s; 2.16, 3H, s.

1. customthe mixture was evaporated under reduced pressure
2. dissolutiondissolved in several mls of toluene
3. custompurified by flash chromatography on silica gel
4. washeluting with a mixture of ethyl acetate and hexane