Dissolve 2.6 g of sodium hydroxide in 20 mL of very cold water, to this solution add 20 mL of ethanol, 2.8 g of benzaldehyde and 0.8 g of acetone with stirring. The additions must be done when the flask is under ice water bath. Vigorously stir for 30 minutes at room temperature. After which place the mixture to a freezer until cold and filter. Recrystallize in hot ethyl acetate.
Addition of the chemicals
Stirring for 30 minutes
The mixture was taken out from the freezer
Filtration of the recrystallized material