Exam 5: Stereochemistry

Draw the structure of (1R, 2S, 3S)-1,2-dibromo-3-ethylcyclohexane. Take particular care to indicate stereochemistry properly.

Which of the following terms best describes the pair of compounds shown: $\underline{\text{ enantiomers, diastereomers, }}$ or $\underline{\text{ the same compound? }}$

Which of the structures above are meso structures?

If possible, draw the enantiomer of the molecule shown below.

Calculate the e.e. of a mixture containing 8.0 g of (-)-glyceraldehyde and 2.0 g of (+)-glyceraldehyde.

Circle each chiral molecule among those shown below.

What term describes the structural relationship between $\underline{\text{ cis }}$ -1,2-dimethylcyclopentane and trans-1,3-dimethylcyclopentane?

Label each asymmetric carbon in the compound below as R or S.