反应详情

Twenty-five g of 1-phenylsemicarbazide and 150 ml of trimethyl orthoacetate were combined, and 100 mg of p-toluenesulfonic acid was added. The mixture was stirred on a steam bath for 5 hours, and was then cooled and evaporated under vacuum. The residue was recrystallized from ethanol to obtain 24.6 g of the desired product.

1. temperaturewas then cooled
2. customevaporated under vacuum
3. customThe residue was recrystallized from ethanol