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

Compound Y:

Compound Y's structure is:

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

Key features:

• The central carbon is chiral.
• Attached groups: Br, H, CH₃, and CH(H)(CH₃).

Enantiomers are non-superimposable mirror images of Y.

Option Analysis:

• Option (A): Not a mirror image of Y; group positions are unchanged.
• Option (B): Mirror image of Y. The positions of Br, H, CH₃, and CH(H)(CH₃) are inverted, thus it is an enantiomer.
• Option (C): Also a mirror image, with inverted groups, making it another enantiomer.
• Option (D): Identical to Y; not an enantiomer.

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