Concept explainers
cis-4-Bromocyclohexanol
Compound C has infrared absorption in the 1620-1680
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- 8. Two structures of Lipitor (a drug used to lower cholesterol) are shown below. (a) Determine the absolute configuration of each indicated stereocenter. Fill in the correct circle. (b) Determine if the two structures are the same compound or stereoisomers. Fill in the correct circle. (a) НО. Carbon a HO O OH Carbon a: OR OS Carbon b H N Carbon b: R OS of H Carbon c: OR OS OH OH Carbon c F Carbon d: R OS OH Carbon d (b) The two structures are: O the same compound O stereoisomersarrow_forward11) How many possible stereoisomers does the following compound have? CH(CH32 H3CM H3C H.arrow_forward(−)-Menthol is the most stable stereoisomer of 2-isopropyl-5-methylcyclohexanol and has the R configuration at the hydroxyl-substituted carbon. (a) Draw the preferred conformation of (−)-menthol. (b) (+)-Isomenthol has the same constitution as (−)-menthol. The configurations at C-1 and C-2 of (+)-isomenthol are the opposite of the corresponding chirality centers of (−)-menthol. Write the preferred conformation of (+)-isomenthol.arrow_forward
- • Consider the following compounds. Assign the R or S configuration to each stereogenic center (add answers onto structures): CH,CH, OCH3 CH3 CH,CH3 сно H;CO,C NH2 co,H 18 Assign the absolute configuration at the stereogenic centre C3 of compound Y. OH Compound Y Assign the absolute configuration at the stereogenic centre C2 of compound Y. Br HO 1 CF3 bund Y Assign the absolute configuration at the stereogenic centre(s) C2 abd C3 of compound Y. HO, HO, 20 Compound Y רarrow_forwardFor the substituted cyclohexane compound shown, identify the atoms that are trans to the bromo substituent. I CH3 Br J HD HCI НА FF HB НОЕ HG CI Identify the atoms that are trans to the bromine. A В D E F H Karrow_forwardCompounds 1 and 2 were prepared, and the difference in their heats of combustion was found to be 17.2 kJ/mol (J. Am. Chem. Soc. 1961, 83, 606-614): H H 1 Shown below are the lowest-energy conformations of compounds 1 and 2. Identify which drawing matches which compound, and identify which compound has the larger heat of combustion. H H H H |||I 2 H 4 H H The first drawing is compound 1, and compound 1 has a larger heat of combustion because it is the less stable compound. O The first drawing is compound 2, and compound 2 has a larger heat of combustion because it is the less stable compound. The first drawing is compound 2, and compound 2 has a larger heat of combustion because it is the more stable compound. The first drawing is compound 1, and compound 1 has a larger heat of combustion because it is the more stable compound.arrow_forward
- (A)Menthol, used to flavor various foods and tobacco, is the most stable stereoisomer of 2-isopropyl-5-methylcyclohexanol. Draw its most stable conformation. Is the hydroxyl group cis or trans to the isopropyl group? To the methyl group? (b) Neomenthol is a stereoisomer of menthol. That is, it has the same constitution but differs in the arrangement of its atoms in space. Neomenthol is the second most stable stereoisomer of 2-isopropyl-5methylcyclohexanol; it is less stable than menthol but more stable than any other stereoisomer. Write the structure of neomenthol in its most stable conformation.arrow_forwardWhen (S)-2-bromobutane undergoes an SN2 reaction with CH3O-, the product is the compound shown below. What is/are the configuration(s) of the product(s) obtained from this reaction? O equal mixture of R and S H₂C a mixture of enantiomers with more R than S S only CH3 CH OR only O a mixture of enantiomers with more S than R H₂ CH₂arrow_forwardOH OH OH 1. Hg(OAc)2, H₂O 2. NaBH4, NaOH x HỌ OH + enantiomer + enantiomer + enantiomer + enantiomerarrow_forward
- Draw (R,S)-1,2-diaminocyclohexane. Draw its enantiomer. Name its enantiomer. Are these compounds the same or different?arrow_forward2. Draw all stereoisomers for the following molecules; indicate the stereochemical relationships for all possible pairs. но HO- Br Br H OH H3C CH3 Brarrow_forward(a) (R)-1,1,2-trimethylcyclohexane, label each structure you have drawn as chiral or achiral.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningOrganic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning