Discussion Forum



1)

Which of the given statement(s) about N, O, P and Q with respect to M is (are) correct?

11112021769_k7.PNG


A) M and N are non-mirror image stereoisomers

B) M and O are identical

C) M and P are enantiomers

D) M and Q are identical

Answer:

Option A,B,C

Explanation:

Converting all of them into Fischer projection

 11112021335_j1.PNG

Since 'M' and 'N' have --OH on the same side and opposite side respectively, they cannot be a mirror image, they are diastereomers.

 11112021916_j2.PNG

 

'M and 'O'are identical

Note Fischer projection represents eclipse form of sawhorse projection'
For comparison purposes, similar types of eclipse conformers must be drawn i'e', both vertically up or both vertically down

 11112021917_j3.PNG

'M' aod 'P' are non-superimposable mirror images, hence, enantiomers

 11112021286_j4.PNG

 

'M' and Q' are non-identical they are distereomers.