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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 Br1. Consider the following pairs of structures. Designate each chirality center as (R) or (5) and identify the relationship between them by describing them as representing enantiomers, diastereomers, constitutional isomers, or two molecules of the same compound. Use handheld molecular models to check your answers. HG (a) Br and and CH H,G H (b) and CH, Br Br 'F (k) and Br CI Br (e) and CH, CH, CH CH, CH, H- -H- CH and H- -Br (d) and FCH CH, CH, Br H CH, and (m) (e) and H. Br CH, and (m) and Br CH (o) and nd and and and
- NHCH3 Assign R or S configuration to each chiral center indicated via a (*). HO bH d. CH3 pseudoephedrine List the groups according to decreasing priority as a string of non capitalized letters like abcd. Highest priority 1st. Decreasing priority is : Configuration:(S): 1. Label any stereocenters in the following molecule as (R) or OH 'CH3What is the enantiomer of the following compound? ОН НО. O There is not an enantiomer as there is no chiral center Here is is..... НО ОН НО ОН
- Label each molecule with chiral centers (R) and (S). Which ones have more than one?Assign R or S configuration to each indicated chirality center (carbon A and B) in the following molecule (Erythronolide B). Which of the following assignments is correct? H3C H3C,,,, H3C О a. carbon A (R); carbon B (S) b. carbon A (R); carbon B (R) c. carbon A (S); carbon B (R) d. carbon A (S); carbon B (S) ОН H3C,,,, Erythronolide B CH 3 CH 3 ОН ОН CH 3 ОН A B11) Label all chiral centers in the following molecule as R or S F Br .....
- 4. ) Determine if the following compound is chiral or not. OH HO OH Me ZOH Ме HO HO OH F. CI Ме CI Он Me JCHO CI Br Br CI CH3Is the following compound an achrial or chiral molecule? Locate the chiral centers if they exist and label with R or S nomenclature.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?
