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- 5.73 Identify the specific relationship between each of the following pairs of molecules (i.e., either same, constitutional isomers, enantiomers, diastereomers, conformers, or unrelated). (a) H CH, (d) (g) НО НО H HO H H -CI CI CH3 H a CH₂ CO H OH H OH CH₂OH CI- OH CH₂ H H НО Н НО OH CH₂ (b) OH H CO H HO (0) H H H CH OH (h) H CH₂ CI CI- CO.H H CH₂OH НО H -OH HO OH НО OH HO CO H OH H OH CO₂H H OH CO.H H НО -H CH OH H H НО CO H -H (c) (1) OH H CO H НО H- Н- H Н -CI H₂C- CH₂ со н OH Н OH HO OH Н CH₂OH OH CI со н -H OH -Н OH CH.OHHow many stereoisomers exist for the compound below?Classify each of the following objects as to whether it is chiral or achiral:o ** smo easn bns als 1on • PRACTICE PROBLEM 5.1 (a) A screwdriver (d) A tennis shoe (g) A car (e) An ear (f) A woodscrew o (b) A baseball bat (h) A hammer (dhe ame pc The co (c) A golf club
- What are constitutional isomers and stereoisomers? Identify the following pairs as constitutional isomers, stereoisomers, or same molecule: CH3 a) CHz CHz ClHz b) CHz CHz QH and and 4 CHs c) and and CHy CH CHz CH3 H. e) *:c=c" CH3 and f) andConvert the following fisher projections into zigzag conformations and fill out the following table describing the relationships of these stereoisomers. Label the table with E for enantiomer, D for diastereomer, O for other, M for meso, C for constitutional:Draw Fischer projections for the four stereoisomers of 2-bromo-3-chlorobutane, label them (2R,3R), (2S,3S), (2R, 3S), and (2S, 3R)
- 4. 4 2 7 CI Identify how many stereogenic centers there are for the molecule. 3 O ОН HIndicate the relationship between each pair. Choose from: configurational stereoisomers,conformers, constitutional isomers, or different formulas (Each term is used at least twice.)Draw a chair conformation of 1,4-dimethylcyclohexane in which one methyl group is equatorial and the other is axial. Draw the alternative chair conformation and calculate the ratio of the two conformations at 25C.
- Given the following structure and numbering: H CO,H 3 H3C 1 A (a) Label the stereocenters of A as R or S and draw a Fischer Projection of the enantiomer of A with C1 on top and C4 on bottom. (b) Draw a Newman Projection of a diastereomer of 4 looking down the C2-C3 bond with C2 in front.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 PhWhich statement is correct about stereoisomers A, B, and C? H- CI CH3 S S CH3 A CI -H CI H A and B are enantiomers, C is a meso compound. A and C are enantiomers, B is a meso compound. A, B, and C are all meso compounds. Band C are enantiomers, A is a meso compound. CH3 R R CH3 B -H - CI H- H CH3 S R CH3 C CI -CI