Draw the structure of the acetal that forms when benzaldehyde is heated with 1,2-ethanediol in an acid medium. Write a detailed mechanism that justifies your formation. Describe step by step the hydrolysis of this acetal in an aqueous acid medium.


Aldehydes and ketones solved problems

Mechanism of formation of the acetal:

The hydrolysis of the acetal in an aqueous acid medium follows the reverse stages of the synthesis.

Cyclic acetal hydrolysis mechanism.