反应详情

0.1 mole of 1-trifluoroethyl-3-carbamoyl-2-pyrazolin-5-one and 0.1 mole of p-hydroxybenzaldehyde were stirred for 1 hour in 150 ml of boiling ethylene glycol monomethyl ether. The solvent was distilled off under reduced pressure and the yellow dye was crystallized from methanol.

1. distillationThe solvent was distilled off under reduced pressure
2. customthe yellow dye was crystallized from methanol