Homework Answers
Ans- Option 4
Explanation-
The general configurations for chair conformations are-
- (1,2)-cis = (a,e) or (e,a)
i.e if the substituents attached to 1 and 2 position are cis to each other, then one of them will be at axial and other will be at equitorial position in the chair conformation.
The same goes for (1,4) also i.e
- (1,4)-cis = (a,e) or (e,a)
Similarly other rules are-
- (1,2)-trans = (a,a) or (e,e)
- (1,4)-trans = (a,a) or (e,e)
- (1,3)-cis = (a,a) or (e,e)
- (1,5)-cis = (a,a) or (e,e)
- (1,3)-trans = (a,e) or (e,a)
- (1,5)-trans = (a,e) or (e,a)
So based on this for the given structures-
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