Chapter 4: Q. 4-4-13P (page 104)
Draw two different chair conformations of trans-1,4 dimethylcyclohexane, and label all positions as axial or equatorial.
Short Answer
The two different chair conformations of trans-1,4 dimethylcyclohexane are:

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Chapter 4: Q. 4-4-13P (page 104)
Draw two different chair conformations of trans-1,4 dimethylcyclohexane, and label all positions as axial or equatorial.
The two different chair conformations of trans-1,4 dimethylcyclohexane are:

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How many eclipsing interactions would be present if cyclopentanewere planar? Assuming an energy cost of 4.0 kJ/mol for each eclipsing interaction,how much torsional strain would planar cyclopentane have? Since themeasured total strain of cyclopentane is 26 kJ/mol, how much of the torsionalstrain is relieved by puckering?
Hydrocortisone, a naturally occurring hormone produced in the adrenal glands, is often used to treat inflammation, severe allergies, and numerous other conditions. Is the indicated group axial or equatorial?

Name the following substances, including the cis- or trans- prefix (red-brown= Br):

Draw structures corresponding to the following IUPAC names:
a) 1,1 dimethyl cyclooctane
b) 3-cyclobutyl hexane
c) 1,2 -dichloro cyclopentane
d) 1,2- dibromo, 5- methylcyclohexane
The following cyclohexane derivative has three red, green, and blue substituents. Identify each substituent as axial or equatorial, and identify each pair of relationships (red–blue, red-green, and blue-green) as cis or trans.

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