反应详情

温度

0 °C

To a stirred mixture of methyl 4-hydroxyphenylacetate (10.0 g) in acetic acid (55 ml) was added nitric acid (22.1 ml) at 0° C. The reaction mixture was stirred at 0° C. for 2 hours. After warmed to 20° C., the reaction mixture was diluted with water (200 ml) and precipitated crystals were collected. The crystals were dissolved in chloroform, and the solution was washed with water, dried over magnesium sulfate and evaporated in vacuo. The residue was recrystallized from a mixture of chloroform and hexane to give methyl 4-hydroxy-3-nitrophenylacetate (9.3 g) as yellow crystals.

1. temperatureAfter warmed to 20° C.
2. customprecipitated crystals
3. customwere collected
4. dissolutionThe crystals were dissolved in chloroform
5. washthe solution was washed with water
6. dry with materialdried over magnesium sulfate
7. customevaporated in vacuo
8. customThe residue was recrystallized from a mixture of chloroform and hexane