Question

The following compounds may exist as two or more stereoisomers. These may be classsified as enantiomer pairs or mest compounds.

Answer the following question about the above structure.
(A) Total number of stereoisomers :
(B) Number of enantiomeric pairs :
(C ) Number of meso compounds :

Answer 1

The correct Answer is:

(a) A-10, B - 4, C-2  

(b) A-5, B-0, C-5

(c) A-4, B-2, C-0   

(d) A-2, B – 1, C-0

(e) A-5, B-2, C-1  

(f) A-4, B-1, C-2

(g) A-4, B-2, C-0   

(h) A - 4, B – 1, C-2

Total stereoisomer = 10, Enantiomeric pairs = 4, No. of meso = 2

Total stereoisomers = 5, no enantiomeric pairs, all 5 are meso compounds.

Total stereisomer = 4, enantiomeric pairs =1 , meso = 2

Answer 2

Correct Answer - `{:((a),A-10","B-4","C-2,(b),A-5","B-0","C-5),((c),A-4","B-2","C-0,(d),A-2","B-1","C-0),((e),A-5","B-2","C-0,(f),A-4","B-1","C-2),((g),A-4","B-2","C-0,(h),A-4","B-1","C-2):}`