Question

How would you use a protecting group to carry out the following transformation?

Short answer

Any chemical compound used in the modification of the reacting compound in order to specify the site of chemo-selectivity is known as the ‘protecting groups.’

Acetals are used as the protecting group of carbonyl compounds.

Step-by-step solution

Protecting group

Any chemical compound used in the modification of the reacting compound in order to specify the site of chemo-selectivity is known as the ‘protecting groups.’

Acetals are used as the protecting group of carbonyl compounds.

Acetal group

The given compound has two reactive functional groups among which ketone is more reactive than the ester group.

Therefore, the carbonyl group is converted into an acetal group as follows,

Mechanism