反应详情

2.9 g of m-trifluoromethylthiobenzonitrile (b.p. 86°-88° C./40 mm Hg) and 1.4 g of dicyanodiamide are dissolved in 3 ml of methylcellosolve and the mixture is then combined with 0.3 g of caustic potash and refluxed for 5 hours. After cooling, the mixture is diluted with water and extracted with ether, and the extract, after evaporation, is recrystallized from methanol. Melting point of the obtained material: 172°-174° C.; yield: 2.4 g.

1. temperaturerefluxed for 5 hours
2. temperatureAfter cooling
3. extractionextracted with ether
4. customthe extract, after evaporation
5. customis recrystallized from methanol
6. custom172°-174° C.