To a beaker add with stirring 25 mL of ethanol, 40 mL of water and 4.4 g of sodium hydroxide, after the solution has cooled down add 10 mL of acetophenone with vigorous stirring. Then start the addition of 10.2 mL of 4-methylbenzaldehyde with maintaining the temperature below 30°C, stir for additional 3 hours. Filter the mixture and wash with some water. Recrystallize with hot ethanol.
The first mixture of chemicals
Addition of the 4-methylbenzaldehyde and stirring for 3h
The pure product