Draw (1R,3S)-1,3-dimethylcyclohexane, in its minimum energy conformation. Then draw the Newman Projection for this structure with the correct stereochemistry and in its minimum energy state.

Draw cis,cis trans-1,2,3-trimethylcyclohexane in its most stable chair conformation and Newman projection. Explain in words and illustrate schematically why this is so.

In the space provided below, write a line structure corresponding to the systematic name (R)-3-methylhexane. Then, provide a Newman projection that illustrates the highest energy conformation of (R)-3-methylhexane along the C3-C4 bond axis of the same. Again, place your answer in the space provided.

6. For each of the following, draw the most stable chair form and identify whether the more stable stereoisomer would be the cis or the trans stereoisomer? a) trans 3-tert-butyl-1-methylcyclohexane b) Cis-2-chloro-1-ethylcyclohexane c) trans-3-butyl-1-isopropylcyclohexane d) trans-4-hydroxy-1-t-butylcyclohexane چار