Chapter 4: Q4-33E (page 114)
Draw 1, 3, 5-trimethyl cyclohexane using a hexagon to represent the ring. How many cis-trans stereoisomers are possible?
Short Answer
There are two pairs of cis-trans stereoisomers are possible.


/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none}
Learning Materials
Features
Discover
Chapter 4: Q4-33E (page 114)
Draw 1, 3, 5-trimethyl cyclohexane using a hexagon to represent the ring. How many cis-trans stereoisomers are possible?
There are two pairs of cis-trans stereoisomers are possible.


All the tools & learning materials you need for study success - in one app.
Get started for free
Prostaglandin , a hormone that causes uterine contraction during childbirth,has the following structure. Are the two hydroxyl groups on thecyclopentane ring cis or trans to each other? What about the two carbon chainsattached to the ring?

Draw three isomers of trans-1, 2-dichlorocyclobutane, and label them as either constitutional isomers or stereoisomers.
Cis-decalin is less stable than trans-decalin. Assume that the 1,3-diaxial interactions in cis-decalin are similar to those in axial methylcyclohexane [that is, one CH H interaction costs 3.8 kJ/mol (0.9 kcal/mol)], and calculate the magnitude of the energy difference between cis- and trans-decalin.
Why do you suppose an axial cyano (–CN) substituent causes practically no 1,3-diaxial steric strain (0.4 kJ/mol)? Use molecular models to help with your answer.
cis-1, 2-Dimethylcyclobutane is less stable than its trans isomer, but cis-1, 3-dimethylcyclobutane is more stable than its trans isomer. Draw the most stable conformations of both, and explain.
What do you think about this solution?
We value your feedback to improve our textbook solutions.