Organic Chemistry Basics - Result Question 90

####42. The total number of stereoisomers that can exist for $M$ is

(2015 Adv.)

Show Answer

Answer:

Correct Answer: 42. $(a, b, c)$

Solution:

  1. Although the compound has two chiral carbons (indicated by stars), it does not has four optically active isomers as expected. It is due to its existence in cis-form only.

cis-form

trans-form (only hypothetical)

The above shown transformation does not exist due to restricted rotation about the bridge head carbons, hence only cis-form and its mirror image exist.



NCERT Chapter Video Solution

Dual Pane