Chemistry Of Organic Compounds

To determine the end product Y in the given reaction, we will analyze the steps involved in the reaction mechanism.

The reaction involves the following components:

1. A ketone:
2. A Grignard reagent:
3. An acid workup:

Step-by-step Reaction Mechanism:

1. The Grignard reagent acts as a nucleophile and attacks the electrophilic carbon of the carbonyl group in the ketone.
2. This nucleophilic attack results in the formation of an alkoxide intermediate X.
3. The intermediate X then undergoes protonation during the acidic workup to form the alcohol product Y.

The reaction can be summarized as the conversion of a ketone to a tertiary alcohol after the addition of the Grignard reagent and subsequent acid workup.

Considering the options given:

• (A) is an ester.
• (B) is a secondary alcohol.
• (C) is a ketone.
• (D) is a tertiary alcohol.

Since the reaction mechanism leads to the formation of a tertiary alcohol, the correct answer is option (D).

Thus, the end product Y is a tertiary alcohol, as illustrated in option (D).