反应详情

18.8 g (0.1 mole) of 1-methyl-3-amino-4-methylmercaptotetrahydro-1,3,5-triazine-2,6-dione (prepared according to Example 2) were idssolved in 200 ml of isopropanol with addition of 6 g of glacial acetic acid and a pinch of ptoluenesulphonic acid and the mixture was saturated with methylamine gas at room temperature. The batch was left to stand for about 10 hours and was evaporated in vacuo, and the resudue was recrystallized from isopropanol. 15 g (88%) of 1-methyl-3-amino-4-methylamino-tetrahydro-1,3,5-triazine2,6-dione were obtained as a colorless powder; melting point 225°-227° C.

1. waitThe batch was left
2. customwas evaporated in vacuo
3. customthe resudue was recrystallized from isopropanol