Concept explainers
Interpretation:
The most stable conformer of glucose has to be drawn.
Concept introduction:
Conformers: The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.
Stereoisomerism (or) geometric isomerism: It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.
Relative stability of cyclohexane: The most stable conformation of cyclohexane is the chair shown to the right, the respective carbon (-C-C-) bonds are it close to
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Essential Organic Chemistry, Global Edition
- Following is a planar hexagon representation for one isomer of 1,2,4-trimethylcyclohexane. Draw the alternative chair conformations of this compound and state which of the two is more stable.arrow_forwardFollowing is a chair conformation of cyclohexane with the carbon atoms numbered 1 through 6. (a) Draw hydrogen atoms that are above the plane of the ring on carbons 1 and 2 and below the plane of the ring on carbon 4. (b) Which of these hydrogens are equatorial? Which are axial? (c) Draw the alternative chair conformation. Which hydrogens are equatorial? Which are axial? Which are above the plane of the ring? Which are below it?arrow_forwardDraw a Newman projection for two more staggered conformations of this molecule. Which of your conformations is most stable? Assume that -OH and -CH3 are comparable in size.arrow_forward
- In the lowest energy chair conformation of cis-1,3-dimethylcyclohexane, how many axial positions are occupied by hydrogen atoms? * O 2arrow_forwardDraw 5 Chair Conformations of Cyclohexane with right side pointing up and 5 with the left side pointing up.arrow_forwardDraw the Newman projection so that it corresponds to the molecule and conformation shown when viewed down the red bond in the direction of the arrow. H₂CH H₂N H H₂C. H₂N * C₂H₂ fum C₂H₂ H Harrow_forward
- SAWHORSE PROJECTION (image of what it looks like is attached below) Draw the sawhorse projection of the most stable conformer of 1-isopropyl-3-methycyclohexanearrow_forwardGiven cyclohexane in a chair conformation, construct the more stable conformation of cis‑1‑methyl‑2‑propylcyclohexane by filling in the missing atoms or groups. Use the numbering provided on the ring.arrow_forwardMonosubstituted cyclohexanes occur in two equilibrium conformations. In one conformation, the substituent is in an axial position. In the other conformation, the substituent is in the equatorial position. Complete the drawing of each chair conformation below and circle the more stable conformation.arrow_forward
- (2) Draw a more stable conformer of the following Newman Projection, and draw the skeletal structure. H Ø CH3 H H3C H Harrow_forwardPlease draw three cis and trans 1,4-dimethylcyclohexane chair conformers and rank based on most to least stable.arrow_forwardThe following are representations of two forms of glucose. The six-membered ring is known to exist in a chair conformation in each form. Draw clear representations of the most stable conformation of each. Are they two different conformations of the same molecule, or are they stereoisomers that cannot be interconverted by rotation about single bonds? Which substituents (if any) occupy axial sites?arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning