反应详情

温度

70 °C

To 11 g (80 mmol) of 3,4-dihydroxybenzaldehyde and 5.5 g (83 mmol) of malononitrile in 40 ml of ethanol, 7 drops of piperidine were added and the mixture was heated at 70° C. for 0.5-1 hour and then poured into water. The resulting solid precipitate was separated by filtration to give 12.7 g (86% yield) of a yellow solid, m.p. 225° C.

1. customThe resulting solid precipitate was separated by filtration