The labeled intermediate is formed during the base-catalyzed hydrolysis of the ester. Propose a suitable mechanism for the following transformations:

Mechanism of ester hydrolysis with labeled intermediates and transformations in saponification.

Detailed reaction mechanism for ester hydrolysis with intermediates in saponification process.

Illustration of ester hydrolysis mechanism with intermediates and transformations in saponification.

Saponification reaction mechanism showing ester hydrolysis and formation of intermediates.