反应详情

温度

0 °C

Into a 4-necked RBF equipped with an overhead stirrer, J-Kem internal temperature probe, a reflux condenser and an addition funnel was placed isonicotinoyl chloride-hydrochloride (50 g, 0.28 mol). To this solid was added 500 ml of 1,2-dichloroethane and the slurry cooled to 0° C. using an ice/water bath. To the addition funnel was added a mixture of the aniline (31.4 g, 0.34 mol) and Et3N (59.5 g, 0.59 mol) in 50 ml of 1,2-dichloroethane. This mixture was slowly added to the slurry over 25 min. A slight exotherm was observed from 2.4° C. to 15° C. after the addition of the first 10 ml. The reaction mixture was observed to cool down slowly. The reaction mixture turned yellow and became heterogeneous. After 30 min., the ice bath was removed and the reaction heated to reflux for 1.5 h. Deionized water, 100 ml, was added and an off-white precipitate formed. The precipitate was collected by filtering through paper on a Buchner funnel and placed in a drying oven (60° C.) overnight to give 45 g (81% th) of an off-white crystalline solid.

1. customInto a 4-necked RBF equipped with an overhead stirrer
2. additionTo the addition funnel was added
3. additionThis mixture was slowly added to the slurry over 25 min
4. customwas observed from 2.4° C. to 15° C.
5. additionafter the addition of the first 10 ml
6. temperatureto cool down slowly
7. customthe ice bath was removed
8. temperaturethe reaction heated
9. temperatureto reflux for 1.5 h
10. additionDeionized water, 100 ml, was added
11. customan off-white precipitate formed
12. customThe precipitate was collected
13. filtrationby filtering through paper on a Buchner funnel
14. customplaced in a drying oven
15. custom(60° C.) overnight to give 45 g (81% th) of an off-white crystalline solid