4. Alkanes and Cycloalkanes

Determine if the following pairof chairs are identical, conformers or different.

Determine if the following pairof chairs are identical, conformers or different.

For each chair on the left, place the substituents on the flipped chair. [Recall that the axial/equatorial designation changes from one chair to the next, but the carbon to which the substituent is attached does not.]

(f)

What is the mistake that was made in drawing each of the flipped chairs on the right from the chair on the left? [In these, assume that the angle through which you view the chair conformations doesn't change.]

(a)

Using the numbers shown in the chair conformation on the left, label the carbons of the flipped chair on the right. [Assume that the angle through which you view the chair conformation doesn't change.] 

For each chair on the left, place the substituents on the flipped chair. [Recall that the axial/equatorial designation changes from one chair to the next, but the carbon to which the substituent is attached does not.]

(c)

For each chair on the left, place the substituents on the flipped chair. [Recall that the axial/equatorial designation changes from one chair to the next, but the carbon to which the substituent is attached does not.]

(e)

Which of the following structures represent the same compound? Which ones represent different compounds?

(e)

Use your models to do a chair–chair interconversion on each ring of the conformation of cis-decalin shown in Figure 3-27. Draw the conformation that results.