反应详情

p-Toluidin (1.4 g, 13.2 mmol) was added to the solution of 2,3-dichloro-1,4-naphthoquinone (1.0 g, 4.4 mmol) in ethanol (300 ml). The reaction mixture was allowed to stir at room temperature for over night. The precipitated product was filtered off and washed with cold ethanol. The product was purified by recrystallization with ethanol/CHCl3 (1:5) to afford the fine reddish needles. Yield: 0.642 g (53.8%), Mp: 295° C.

1. filtrationThe precipitated product was filtered off
2. washwashed with cold ethanol
3. customThe product was purified by recrystallization with ethanol/CHCl3 (1:5)
4. customto afford the fine reddish needles