Question

Which of the following represent(s) the enantiomer of Y?

• A.
• B.
• C.
• D.

Hint:

To identify enantiomers, look for non-superimposable mirror images by analyzing the relative positions of substituents

Answer 1

The Correct Option is B, C

Given Compound (Y):

The structure of compound Y is as follows:

\( \text{Br} - [\text{:: 60}] - [\text{:: -60}] \text{H} - [\text{:: -60}] - [\text{:: -60}] (\text{CH}_3) - [\text{:: -60}] \text{H} \)

In this compound:

• The central carbon atom is a chiral center.
• The groups attached are Br, H, CH₃, and CH(H)(CH₃).

To identify the enantiomer of Y, we need to find structures that are mirror images of Y but non-superimposable.

Analysis of the Options:

• Option (A): This compound is not a mirror image of Y, as the positions of the groups are not flipped.
• Option (B): This structure matches the mirror image of Y. The relative positions of Br, H, CH₃, and the secondary group CH(H)(CH₃) are correctly inverted, making it an enantiomer.
• Option (C): This structure also matches a mirror image of Y with the correct spatial inversion of groups, making it another enantiomer of Y.
• Option (D): This structure is identical to Y, not its enantiomer.

Conclusion: Both (B) and (C) are enantiomers of Y. Therefore, the correct answer is: (B), (C).