Question

Which of the following diols exists as a pair of enantiomers?

• A. Trans-$1.3$-Cyclohexanediol
• B. Cis-$1,4$-Cyclohexanediol
• C. Cis-$1,3$-Cyclohexanediol
• D. None of these

Answer 1

Answer: (A), (C)

Trans-$1.3$-Cyclohexanediol
Cis-$1,3$-Cyclohexanediol

$A:$ Trans 1,3 cyclohexanediol

-which can form enantiomers forms non-superimposable mirror images.

$B:$ cis 1,4 - cyclohexanediol.

-either of the way 1,4 positions forms superposable mirror images.

$C:$ cis 1,3 cyclohananediol

-forms superposable mirror image.

Hence only Trans 1,3 cyclohexanediol can form enantiomers.