Question

In the Cannizzaro reaction of benzaldehyde ( aka solventless disproportionation of benzaldehyde in the presences of a strong base such as KOH), what is the internal reduction product?

Answer 1

Reaction products are shown below

Step-by-step explanation:

• In cannizaro reaction, benzaldehyde produces benzoic acid and benzyl alcohol through disproportion.
• Here, a hydroxyl group first gives a nucleophilc addition at carbonyl center of benzaldehyde.
• Then a hydride transfer takes place to another molecule of benzaldehyde
• Thus, benzoic acid and benzyl alcohol are produced.
• Full reaction mechanism has been shown below