Need experts solution only 1. a. Identify with an asterisk all the chirality centers -if any- in the given compounds.HOb. Draw the most stable conformation for each compound below. Which one has the leasttorsional strain?iiiiic. Determine the configuration R/S at the chirality center(s).H₂NSHOHNH2سيدd. Draw the enantiomer and a diastereomer of the following molecule and name them:OHCI(2R,3S)-3-chloropentan-2-oli. Enantiomerii. Diastereomer

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Answered: 1. a. Identify with an asterisk all the…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter6: Alkanes & Alkenes

Section: Chapter Questions

Problem 21E

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a. Draw the structure of this molecule as a hexagon with dash(es) and/or wedge(s). ha -OH b. Draw the other chair conformation. c. Draw the enantiomer of the molecule in its most stable conformation. он H d. Ignoring differences in conformation, how is this molecule related to the one above? Are they the Same molecule, Enantiomers, or Diastereomers? OH H₂ HH₂ POM (CH₂)2
2. Assign R, S configurations to each indicated chirality center in the molecules below. OH COOH HO H CH₂NH2 CH H₂N H HO HO-C H CH ye yde OH H H HC CH2 H HO CO₂H 3. Consider the structure below to answer the following questions: H3C H ΝΗ H OH a. Assign R or S configuration to each chirality center in the structure above. b. Based on the number of chirality centers, how many stereoisomers are possible for the structure above? C. Will this structure have a meso stereoisomer? Explain your answer.
4. For each of the following molecules, label each stereocenter as R or S. Label the molecules appropriately as chiral or meso. a. b. methionine NH₂ H d. но. OH c. D = 2H, T = ³H, isotopes of hydrogen. f.T. OH OH CI Y ОН
III. Consider the compound below. CH, CI- Br но O- H. (Atomic number: H-1, C-6, O-8, CI-17, Br-35) a. How many chiral centers are in the molecule? b. How many stereoisomers are there for the compound? c. Draw the Fischer projection for each of the stereoisomer and determine the absolute configuration (R or S). Label each using I, II, etc. d. Which pairs are enantiomers? Which are diastereomers?
What is the relationship (same, enantiomers, or diastereomers) between the following two molecules? You should find the absolute configuration at the stereo center to answer this question. H CH... HS CH₂OH HOH₂C H SH
1. Consider the following molecules: OH OH A a) Circle the chirality center(s) in each molecule. b) Assign priorities to each chirality center you identified in molecule A and determine if each chirality center is R or S. - c) Determine if each chirality center is R or S for molecule B., d) What is the stereochemical relationship between these two moleu e) Draw the most stable chair form for molecule A. · f) Draw the most stable chair form for molecule B. g) Do you expect one molecule to be more stable than the other? If so, which one and why? If not, why not? " 1 . Convert the following line structure into a Fischer projection. , ОН ОН OH ОН ОН
4. Draw the compound, 2-pentanol, shown on the PubChem website. Label any stereocenter(s) as to their absolute configuration, e.g. R or S. 5. Is there a plane of symmetry in 2-pentanol, yes or no? 6. Is 2-pentanol chiral or achiral?
III. Consider the compound below. H. F HO- HO -HO- (Atomic number: H-1, C-6, O-8, F-9) a. How many chiral centers are in the molecule? b. How many stereoisomers are there for the compound? c. Draw the Fischer projection for each of the stereoisomer and determine the absolute configuration (R or S). Label each using I, II, etc. d. Which pairs are enantiomers? Which are diastereomers?
Identify whether the following pairs of compounds represent a pair of constitutional isomers, different conformations of the same compound, configurational isomers, identical structures, or unrelated compounds. If the molecules are configurational isomers, identify if they are enantiomers or diastereomers. Build models of the molecules to help you. Order of determination: a. Constitutional isomers (determine name with numbering system). b. Configurational isomers (determine R/S or cis/trans) c. Conformational isomers (if the above are the same, is the spatial arrangement different?) d. Identical (if all of the above are the same) J. Br Br ÇH3 and HO,C ÇH3 Br Br K. H3C Br and CH,CH3 CH;CH Br CH3 CH3 H3C. CH3 & Br Br Е. H HgC CH3 H CH3 & CI CI CI I- I
a. b. For the following two pairs of molecules, (1) Draw out the chair conformation for each molecule, flip the ring if it is possible. (2) Compare both molecules to circle out which one is more stable. (3) Identify their relationship as: constitutional isomer, conformational isomer, stereoisomer or identical. (4) Find all the chiral center on each molecule and label them. Br and ZX- and VS. H H H Br H H ∞
1. Is the molecule shown below chiral or achiral? HO₂C OH 2. Is the molecule shown below chiral or achiral? CH₂OH H OH CO₂H 3. Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound. CH3 & D ....!!!!! H3C Holl 4. Label each chiral carbon in the compound below as R or S. JOH // CH3
What’s the main difference between enantiomers and diastereomers? I need help identifying the molecules.

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