反应详情

4.14 g (20 mmol) of 3-chloro-4-phenylfuran-2,5-dione were initially charged in 50 ml of chloroform and, at room temperature, admixed dropwise with stirring with 2.16 g (20 mmol) of phenyl hydrazine, and the mixture was stirred at room temperature overnight. The mixture was filtered, washed three times with sodium bicarbonate solution and once with water, dried over sodium sulfate and concentrated under reduced pressure. Yield: 5.4 g of a crystalline solid, m.p. 144-146° C.

1. filtrationThe mixture was filtered
2. washwashed three times with sodium bicarbonate solution
3. dry with materialonce with water, dried over sodium sulfate
4. concentrationconcentrated under reduced pressure