Draw all the stereoisomers for for structures A and B, label each structure as chiral or achiral and give the the type of isomeric relationship to the original compound, be as specific as possible. CH3 Br CHO -H- но—н -HO- CH3 CHO но- Br Br H- OH Br- H- -OH- H- -Br H- H- -Br HO -H- Br Br CH2OH CH3 CH2OH CH3 D A
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Draw all the stereoisomers for structures A and B, label each structure as chiral and achiral and give the type of isometric relationship to the original compound be as specific as possible.
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- [Review Topics) References] M Identify 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.) M MD M CH3 req N. req NH2 req HO2C НО-С 9 more group attempts remaining Retry Entire Group Submit Answer Nes Previous Save and Exit 7:01 PM ) E 10/30/2019Identify the specific type of relationship between each of the following pairs of molecules (i.e., either same, constitutional isomers, enantiomers, diastereomers, conformers, or unrelated). (a) (b) (c) (d) (e) H. H CH3 H3C Lon, maf_* Lon, (f) Br (g) Br Br (h) Br H. LCH3 H H H H LaCH3 H3C LCH3 H H3C" CI H. Br C, CH CH3 CI CI H CI H. BrDraw a structural formula of the S configuration of the compound shown below. CH₂CI [Referer • 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. n ? ChemDoodle
- 5. 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 Br2.) For the following 12 compounds, please write the number of chiral centers (0 if there are none) and label each molecule as either chiral or achiral. H3C H3C, но, H3C H3C H3C H3C H3C" H3C CH3 CHs OH он он H3C он он H3C., он H3C, H3C H3C H3C он но H3C ÓH H3C H3C H3C" но OH он CH3Determine whether each of the following names describes a single stereoisomer unambiguously. For each one that does,rewrite the name using the R and S designations for the chiral centers if appropriate. (a) cis-1,2-difluorocyclohexane;(b) trans-1,2-difluorocyclohexane; (c) trans-1,4-difluorocyclohexane; (d) cis-1-chloro-2-fluorocyclohexane; (e) trans-1,4-dimethylcycloheptane
- 1. 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 andHow many chirality centers are there in the molecule shown below? How many stereoisomers are possible?Coibacin B (shown below) is a natural product that exhibits potent anti-inflammatory activity and potential activity in the treatment of leishmaniasis, a disease caused by certain parasites (Org. Lett. 2012, 14, 3878-3881): (a) Assign the configuration (R or S) of each chirality center (labeled A to C) in coibacin B. (b) Identify the number of possible stereoisomers for this compound, assuming that the geometry of the alkenes are fixed. Choices are given below and write the CAPITAL LETTER of your choice. A. 2 В. 4 С. 8 D. 16 ANSWERS: (a) A. В. C. (b)
- Draw a structural formula of the SR configuration of the compound shown below. HO CH3 S -NHCH3 R H3C ephedrine • 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. * #[ ] در ?(3) Prostacyclin I₂ is an important compound, which performs a variety of functions in animal body. (a) How many chirality centers does prostacyclin have? Mark each of them. (b) Draw the structure of enantiomer of Prostacyclin I2. HO... HO*** Prostacyclin 12 OHIs the following compound an achrial or chiral molecule? Locate the chiral centers if they exist and label with R or S nomenclature.