Assuming disubstitution occurs on the cyclic isomeric structure shown, what is the least likely form, even of minor importance?
Understand the Problem
The question is asking for an analysis of a chemical structure in the context of isomerism and substitution reactions, specifically focusing on which isomeric form is least likely to be stable given disubstitution. This involves understanding concepts of chemical bonding and sterics in molecular chemistry.
Answer
Trans isomers are least likely to form in cyclic disubstitution.
The least likely form of disubstitution in cyclic isomeric structures is the formation of trans isomers, as cis isomers are more commonly formed under typical reaction conditions.
Answer for screen readers
The least likely form of disubstitution in cyclic isomeric structures is the formation of trans isomers, as cis isomers are more commonly formed under typical reaction conditions.
More Information
In cyclic systems, steric factors tend to favor the formation of cis isomers over trans isomers, as the latter require more energy due to eclipsing interactions.
Tips
A common mistake is to assume trans isomers might still form significantly. However, steric hindrance in cyclic structures makes them less favorable.
Sources
- Cis Isomer - an overview | ScienceDirect Topics - sciencedirect.com
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