1) Determine the relationship of the following pairs of compounds. Are they identical, enantiomers, diastereomers, constitutional isomers or non-isomeric different compounds? (2 ps) (a) (c) OH OH OH (b). OH CH3 H3C CH3 O₂N H H- CH2CH3 Br -H H Br CH3 H3C O₂N H H (d)

H3C             Cl                                                           \       /                                                               C=C                             /       \                                          H2N        I     (R)-enantiomer     (Z) isomer     (S)-enantiomer     (E) isomer     meso compound

Which of the following compounds are chiral? Draw them, and label the chirality centers. 5-32 (a) 2,4-Dimethylheptane (b) 5-Ethyl-3,3-dimethylheptane (c) cis-1,4-Dichlorocyclohexane

7) Identify the relationship between the following pairs of molecules [constitutional isomers, enantiomers, diastereomers, conformers, same molecule (non-meso), meso compound] a) c) C₂H5- H Br CI H CH3 Br H. CI Br H Br C₂H5 CH3 CI b) d) H. H Ph H F Me Br H H Et Br H F Et Me Ph

3.8 Km/s to m/year   25m/s to miles/hr   8.24 g/cm^2 to mg/mm^2

Identify the specific relationship between each of the following pairs of molecules (i.e., either same, constitutional isomers, enantiomers, diastereomers, conformers, or unrelated). CH3 (c) Br CH3 (а) CI OH (b) Br НО Br, CH3 Br ОН CI (f) Br OCH3 (d) CH3 (e) CH3 CH3 CH3 ОН OCH3 Br H ОН

Identify whether each of the following pairs of compounds are enantiomers or diastereomers, and label all asymmetric carbons as R or S: (a) (b) HO. .CI (c) CI 基。 OH OH - it (d) (e)

How many stereoisomers (count only carbon sp3 chiral centers) are there in cabergoline, a drug used to treat Parkinson's disease? A) 2 B) 4 C) 8 D) 16

Ephedrine (2‑methylamino‑1‑phenylpropanol) is a drug that is used as a decongestant and bronchodilator to treat, among other conditions, the congestion due to the common cold. Place an asterisk (*) next to the chirality center(s) in the ephedrine molecule.

1) Determine the relationship of the following pairs of compounds. Are they identical, enantiomers, diastereomers, constitutional isomers or non-isomeric different compounds? OH OH (a) (c) OH € CH3 H- CH3 H3Cl O₂N Br CH2CH3 H H Br CH3 H3C O₂N H H (d)