反应详情

A stirred mixture of 4,4′-dimethylbenzil (2.38 g; 0.01 mol), aminoguanidine bismesylate (3.33 g; 0.0125 mol) and ethanol (10 cm3) was heated under reflux until no starting material remained (4 hrs) when a cream solid was deposited. The mixture was evaporated to half volume and basified with 880 ammonia+water (1:1; 4 cm3). On standing, bight yellow prisms were deposited. The product was filtered off, washed with ethanol+water (1:1) and dried in vacuo at 450.

1. temperaturewas heated
2. temperatureunder reflux until no starting material
3. custom(4 hrs) when
4. customThe mixture was evaporated to half volume and basified with 880 ammonia+water (1:1; 4 cm3)
5. filtrationThe product was filtered off
6. washwashed with ethanol+water (1:1)
7. customdried in vacuo at 450