3. For each of the following pairs of molecules, state whether the two structures are enantiomers, diastereomers, or the same molecule. a. F H relationship: זן F CI b. Br Br relationship: 'Br Br C. H3CH2C H3C CI CN H H Ö CN relationship: d. OH HO. e. CH3 CH3 relationship: H- I CHO -OH HOH CH3 OH CH3 བསྡུ་ལུ་ལུ།(༡༨༦ OHC OH relationship:
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- 5. Consider the following pairs of structures. Identify the relationship between them (enantiomers, diastereomers, or identical compounds. HOH2C H OH H OH HO H Br H3C Н H H₂CH₂C CI Br H CHO CH3 I CH3 OH OHC Н H OH H OH Bell!! H3C, HO H Н.С H CH₂CH3 CH3 CI HỌ,H CH₂OH Br5. Consider the following pairs of structures. Identify the relationship between them (enantiomers, diastereomers, or identical compounds. H3C OH H₂C HOITY H CH₂OH HO HO C,, CO₂H вой HOH2C CH₂ OH H OH H OH Н HO H H COzH Br Д H3C Br H₂CH₂C CI H CHO CH3 I CH3 OH HO Н HO... HO C OHC Н H3C, Bell!! H CO₂H Н.С CH₂OH H OH H OH HO H CH₂ CO₂H HỌ,H CH₂CH3 CH3 CI CH₂OH BrChoose the relationship between these compounds. NH₂ CI ОН НО,, constitutional isomers enantiomers diastereomers O identical NH₂ CI
- Describe the relationship between each of the pairs of isomers shown by recording Constitutional, Conformational, Enantiomers, Diastereomers, Identical or Meso. нн H;C CH3 H;CLCH3 Constitutional CI H3C, H Enantiomers H. OH H3C H. CH3 Diastereomers OH Identical CH3 H3C, H H. CH3 Meso CI CH3 ÓH H. Conformational ÓH CH3 Not Related CH3 HCI H H- H H ČH3 ČH3 Br Br H3CH H CH3 -CH3 Br H3C- Br CH3 -CI H -CH3 H- C- -Br Br -CH3 CH3 CH3 OH H- OH H- -CH3 -CH3 -CH3 ÓH H- H CH3 Br Br ČH3 OH HO H CH3 Í ÍIdentify if the following pairs of compounds are identical, enantiomers, diastereomers or constitutional isomers. * ОН CN and H;C uNCN INCN H3C H. C HO, (ii) and O (1) Identical; (ii) Enantiomers O (1) Enantiomers; (ii) Diastereomers O (1) Enantiomers; (ii) Enantiomers O (1) Identical; (ii) Identical3 11. Draw all the enantiomers and diastereomers for the following compound and label your structures accordingly. ar
- 8. Identify the stereochemical relationship between the structural pairs shown below as (A) identical structures that are not meso; (B) identical structures that ARE meso; (C) structures that are enantiomers; or (D) structures that are diastereomers. a) b) H3C c) CH3 Br H. CH3 Br Br CH3 H. CI Holl H Cill Cl- CH3 Br H. CI CH3 HO. H. H3C Cl H3C- H- H. CH3 Cl a) b) c) 9. Identify the stereochemical relationship between the structural pairs shown below as (A) identical structures that are not meso; (B) identical structures that ARE meso; (C) structures that are enantiomers; or (D) structures that are diastereomers. a) b) c) CH2CH3 NH2 HO CH3 H3C. CH3 Cl HO H;C CH2CH3 F. F H;C. CI H H,N -CH3 CH3 NH2 H3C Br H2N C1 H3C CH3 CH3 H;CH,C- Cl F H. H Br CH,CH3 CH3 a) b) c)11. Consider the following compounds: ÇO,H CHO ОНС H. ОНС CO,H H3C- -- H. HO- H3C H. O, H ČOH HO, CH3 B (a) Label the asymmetric carbons as R or S on each compound (A - C). (b) Which compounds, if any, are enantiomers? diastereomers? identical?How many stereocenters are present in diosgenin (structure below)? Me HO Me H I Me H Me I..
- Draw all possible stereoisomers for the following molecule. Indicate which are enantiomers and which are diastereomers and assign absolute chirality at all centers and for all structures. H2NIdentify the absolute configuration of the chirality centers in each of the following compounds as R or S. Note: if multiple chirality centers are present, indicate the stereochemical designations as: RR, SS, RS, or SR. (Other terms used for chirality center include chiral center, stereocenter, and stereogenic center.) CO₂H CO₂H HOI... HWhat term best describes the relationship between the structures below? H, CI H₂N Enantiomers Diastereomers Conformational isomers Constitutional isomers H₂N, H