Use a Fischer projection to describe the stereochemistry of (R)-2-chlorobutane by dragging the functional groups to the appropriate box in the figure. Cl CH₂CH3 Answer Bank CH₂ H
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- Of the four structures shown here in Fischer projections, indicate the relationships between (a) and (b), and between (c) and (d)? CHO CHO нтон нотн CH₂OH (a) CH₂OH (b) ÇO₂H H-OH -OH -он но- HO- CO₂H (c) II HO-H ÇO₂H of A. Both pairs are enantiomers O B. Both pairs are identical C. (a) and (b) are enantiomers, (c) and (d) are identical D. (a) and (b) are identical, (c) and (d) are enantiomers II CO₂H (d)Following are stereorepresentations for the four stereoisomers of 3-chloro-2-butanol. (a) Assign an R or S configuration to each chiral center. (b) Which compounds are enantiomers? (c) Which compound are diastereomers?7B Compound A shown below is given. OH A Complete the Fischer projection below to represent compound A CH₂CH3 CH₂CH₂CH3
- 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)2 Draw all stereoisomers for the following molecules; indicate the stereochemica interrelationships (enantiomer, diastereomer, or meso) for all its possible pairs. 4) H;C CH3 Но CH3 OH CI CI Но OH5. 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 Br
- Draw a Fischer projection for each of the following molecules shown in its zigzag conformation. (a) OH (b) OH (c) OH CI HO HO HO `CN HƠ CGH5 OH OH OH OHHO Assign R, S configurations to the chiral centers in the following molecule.(a) assign R or S configuration to each chiral center, (b) Which compound are enantiomers? (c) Which compounds are diastereomers?
- Department Final EXd Q1: Coibacin B is a natural product that exhibits potent anti-inflammatory activity and potential activity in the treatment of leishmaniasis, a disease caused by certain parasites. HAH H (a) Assign the configuration (R or S) of each chiral center in coibacin B. (b) Identify the number of possible stereoisomers for this compound, assuming that the geometry of the alkenes is fixed.Predict the expected major product(s) of the following reaction sequence. ی ہیں میں قبر ہیں H 1. t-BuOK, t-BuOH 2. O3, CH2Cl2, -78 °C 3. MezS H OH OH + enantiomer HH- CO₂H CH3 F Select the appropriate stereochemical designation based on the Fischer projection shown above.