Question

Compound ‘A’ undergoes following sequence of reactions to give compound ‘B’. The correct structure and chirality of compound ‘B’ is
[where Et is –C₂H₅]

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is C

 To determine the structure and chirality of compound ‘B’, we need to analyze the sequence of reactions given for compound ‘A’:

1. The first step involves the reaction with \(\text{Mg} \) in\)
2. In the second step, the Grignard reagent is treated with \(\text{D}_2\text{O} \), which leads to the deuteration of the carbon attached to\)

Given the mechanism, compound ‘B’ will have a carbon center with deuterium substituent.

We have to identify the correct structure from the options provided:

1. Chirality: Compound ‘B’ has a chiral center due to the four different groups around the carbon: hydrogen, methyl, another methyl group (from isopropyl), and deuterium.
2. Compare the given options to find the one that matches \(\text{CH}_3\text{CH}(\text{CH}_3)\text{CD}\)structure.

The correct answer is:

This option represents the product after deuteration, maintaining the chirality at the carbon center.