c) For the following compound identify how many chiral carbons present and how many isomers are possible. ( OH H- CI H H-C-Br d) Figure out elements of unsaturation for the following compound 2. Assign R and S congurations for the following compound. And draw enantiomers and diastereomers -OH CH₂ -Br -H C6H4NOCI

Classify the following pair of compounds as the same compound, enantiomers, diastereomers, constitutional isomers, or not isomeric. Also, select the correct IUPAC name, including the correct (R) or (S) designation, for each. H ÷ ||I The correct IUPAC names are: || J k CI same compound enantiomers diastereomers constitutional isomers not isomeric Compound I: (2R, 3R)-2,3-dichloropentane, Compound II: (2R, 3S)-2,3-dichloropentane Compound I: (2S, 3S)-2,3-dichloropentane, Compound II: (2S, 3S)-2,3-dichloropentane Compound I: (2S, 3R)-2,3-dichloropentane, Compound II: (2S, 3R)-2,3-dichloropentane Compound I: (2R, 3R)-2,3-dichloropentane, Compound II: (2R, 3R)-2,3-dichloropentane

Draw the stereoisomers for the following molecules listed below. Be sure to label all chiral centers as R or S and define the relationship between all pairs of stereoisomers for each molecule set A) 1,4-dimethylcyclohexane B) 1,3-cyclohexanediol C) 1,3-dimethylcyclopentane

Assign R- or S-configuration for each chiral center found in the following components. Determine whether each of these molecules is chiral, not chiral, or a meso compound. (i) OH H3C- Cl- ČH3 (ii) CH3 H Br Br- ČH3

erences) Draw a structural formula of the SR configuration of the compound shown below. CH3 S NR HO Use the wedge/hash bond tools to indicate stereochemistry where it exists. Include H atoms at chiral centers only If a group is achiral, do not use wedged or hashed bonds on it. ood

Draw a structural formula of the RR configuration of the compound shown below. Mastered R OH R AFFIL CH3 • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Include H atoms at chiral centers only. • If a group is achiral, do not use wedged or hashed bonds on it. Sn [F ? ChemDoodle Ⓡ

2. Identify the following molecules as chiral or achiral. e) f) Br OH ч к ОН h) ОН

Does the molecule below exist as a pair of enantiomers? If so, change the bonds to wedges and dashes to reflect R stereochemistry. If the molecule does not exist as a pair of enantiomers, check the box below. Does not exist as enantiomers OH 0 X H :0 Shm

Does the molecule below exist as a pair of enantiomers? If so, change the bonds to wedges and dashes to reflect S stereochemistry. If the molecule does not exist as a pair of enantiomers, check the box below. H₂C- HO Does not exist as enantiomers X :0 Stm