First, benzaldehyde and acetone react to form an α,β-unsaturated carbonyl compound, which is also known as cinnamaldehyde.
Then, cinnamaldehyde is oxidized to produce cinnamic acid, and the catalyst for the reaction can be used such as chromic acid chloride or guanine nucleotide copper ion.
Reaction mechanism: In the oxidation reaction, cinnamaldehyde receives oxidation from external oxygen to extract its hydrogen, generating carboxyl groups, and finally obtaining cinnamic acid. The reaction formula is as follows:
Cinnamaldehyde + external oxygen → cinnamic acid
Reaction conditions: the reaction temperature and reaction time are the key reaction conditions, usually using high temperature and high pressure conditions, such as heating of boiling water, the reaction temperature of 150-180 degrees Celsius, the reaction time of 2-3 hours.
In addition, attention needs to be paid to the selection of appropriate solvents and oxidizers to improve reaction efficiency and product purity.