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- (a) Identify type of molecules either chiral, achiral, or meso for each compound shown below and (b) Indicate the number of chiral centers in each molecule.[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 10/30/2019Assign the configuration of the chiral center in the following compound. OS COR Hint Save for Later
- 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 the # of chiral centers. Determine the most stable chair conformation then indicate which are equatorial and which are axial.
- Draw 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 ? ChemDoodleFind and determine the R or S configura- tion for all chiral carbons in Geldanamycin, an antibiotic. You must be clear on which carbon atoms you are assigning the con- figurations to; draw arrows to the chiral carbon if you have to. Hint: There are six chiral carbons in this molecule. Calculate the total number of stereoisomers for Gel- danamycin. The formula for doing so is 2", where n is the number of stereocenters. CH 30. H3C CH3O OH NH CH3 CH 30 CH3 NH₂Is it possible for a meso compound to contain three chiral centers? Why or why not?
- Determine 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-dimethylcycloheptane91/ Draw examples of the following: a ) Ameso, Enantiomers and diastereomers compounds with the formula CaH18. b) Acompound with tow chirality centers (S, R) and (R, R). らにE). Provide the absolute configuration of each chiral center (R, S or none). i) Lowest CIP priority group back (4) H (3) cew (3) (s) (1) CI н (ч) (3) (8) (3) H(4) a (¹) F (2) (s) (NH₂ (4) H (5) (9) (25) C (R) (4) Koy (2) (R)