反应详情

温度

20 °C

m-Toluidine (1772 g) is dissolved in acetone (3.5 L), and thereto is added a solution of sodium hydroxide (648 g) in water (6.25 L), and the mixture is cooled to around 20° C. To the mixture is added o-methylbenzoyl chloride (2507 g) over a period of about 20 minutes with stirring, by which the temperature of the reaction mixture raises to around 60° C. After stirring for about one hour, the reaction mixture is cooled around 10° C. and the resulting crystals are taken by filtration. The crystalline product is washed 2 times with methanol/water (4:1, 3.75 L), and dried at about 60° C. to give the desired product (3530 g, yield 96.62%).

1. temperatureraises to around 60° C
2. stirringAfter stirring for about one hour
3. temperaturethe reaction mixture is cooled around 10° C.
4. filtrationthe resulting crystals are taken by filtration
5. washThe crystalline product is washed 2 times with methanol/water (4:1, 3.75 L)
6. customdried at about 60° C.