反应详情

温度

12 °C

3,6-Dimethoxybenzene-1,2-dicarboxylic acid (20 g) was dissolved in pyridine (100 ml) at room temperature. The solution was then cooled in a cold water bath and acetic anhydride (27 g, 25 ml) added dropwise over 10 minutes (temperature rose from 23° to 25° C.) The reaction mixture was then stirred for 90 minutes at 12° C., filtered, washed with ether (100 ml) and pulled dry to give a pale cream solid. Dried at 50° C. in a vacuum oven, m.p. 268°-269° C.

1. temperatureThe solution was then cooled in a cold water bath
2. filtrationfiltered
3. washwashed with ether (100 ml)
4. custompulled dry
5. customto give a pale cream solid
6. customDried at 50° C. in a vacuum oven, m.p. 268°-269° C.