Organic Chemistry
8th Edition
ISBN: 9781305580350
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher: Cengage Learning
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Chapter 6, Problem 6.41P
Consider the following reaction.
- (a) Draw a structural formula for the compound with the molecular formula C8H12.
- (b) Do you predict the product to be the cis isomer, the trans isomer, or a mixture of cis and trans isomers? Explain.
- (c) Draw a suitable stereorepresentation for the more stable chair conformation of the dicarbaldehyde formed in this oxidation.
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Please do parts a and B
There are four cis,trans isomers of 2-isopropyl-5-methylcyclohexanol:(a) Using a planar hexagon representation for the cyclohexane ring, draw structural formulas for the four cis,trans isomers.(b) Draw the more stable chair conformation for each of your answers in part (a).(c) Of the four cis,trans isomers, which is most stable? (Hint: If you answered thispart correctly, you picked the isomer found in nature and given the name menthol.)
4.(a). Draw the structures of (i) cis-1,4-Dibromocyclohexane and (ii) trans-1,4-
Dibromocyclohexane.
4(b). Draw the most stable conformers of (i) cis-1,4-Dibromocyclohexane and (ii)
trans-1,4-Dibromocyclohexane.
4(c)Which is more stable? (i) cis-1,4-Dibromocyclohexane or (ii) trans-1,4-
Dibromolcyclohexane. Explain the reason for your choice.
Chapter 6 Solutions
Organic Chemistry
Ch. 6.2 - Using the BDE values from Appendix 3, calculate...Ch. 6.3 - Name and draw a structural formula for the product...Ch. 6.3 - Prob. 6.3PCh. 6.3 - Propose a mechanism for the addition of HI to...Ch. 6.3 - Prob. 6.5PCh. 6.3 - Propose a mechanism for the acid-catalyzed...Ch. 6.3 - The acid-catalyzed hydration of...Ch. 6.3 - Complete these reactions. (a) (b)Ch. 6.3 - Draw the structure of the chlorohydrin formed by...Ch. 6.4 - Draw structural formulas for the alkene that gives...
Ch. 6.5 - Prob. 6.11PCh. 6.5 - Prob. 6.12PCh. 6.5 - What alkene with the molecular formula C6H12, when...Ch. 6 - Prob. 6.15PCh. 6 - Prob. 6.16PCh. 6 - Predict the organic product(s) of the reaction of...Ch. 6 - Prob. 6.18PCh. 6 - Prob. 6.20PCh. 6 - Draw a structural formula for an alkene with the...Ch. 6 - Account for the fact that addition of HCl to...Ch. 6 - Account for the fact that treating propenoic acid...Ch. 6 - Draw a structural formula for the alkene with the...Ch. 6 - Draw the alternative chair conformations for the...Ch. 6 - Draw a structural formula for the cycloalkene with...Ch. 6 - Reaction of this bicycloalkene with bromine in...Ch. 6 - Terpin, prepared commercially by the...Ch. 6 - Propose a mechanism for this reaction and account...Ch. 6 - Treating 2-methylpropene with methanol in the...Ch. 6 - When 2-pentene is treated with Cl2 in methanol,...Ch. 6 - Treating cyclohexene with HBr in the presence of...Ch. 6 - Propose a mechanism for this reaction. 1-Pentane...Ch. 6 - Treating 4-penten-1-ol with bromine in water forms...Ch. 6 - Prob. 6.35PCh. 6 - Prob. 6.36PCh. 6 - Reaction of -pinene with borane followed by...Ch. 6 - Write structural formulas for the major organic...Ch. 6 - Draw the structural formula of the alkene that...Ch. 6 - Consider the following reaction. (a) Draw a...Ch. 6 - Prob. 6.42PCh. 6 - Prob. 6.43PCh. 6 - Show how to convert ethylene to these compounds....Ch. 6 - Show how to convert cyclopentene into these...Ch. 6 - Prob. 6.46PCh. 6 - Describe the stereochemistry of the bromohydrin...Ch. 6 - Prob. 6.49PCh. 6 - Treating 1,3-butadiene with 1 mole of HBr gives a...Ch. 6 - In this chapter, we studied the mechanism of the...Ch. 6 - As we have seen in this chapter, carbon-carbon...Ch. 6 - Prob. 6.53PCh. 6 - Prob. 6.54P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Draw the most stable conformation of cis-1-tert-butyl-3-ethylcyclohexane. (a) (b) trans-1-tert-butyl-2-methylcyclohexane. (c) trans-1-tert-butyl-3-(1,1-dimethylpropyl)cyclohexane.arrow_forwardDraw the alternative chair conformations for the cis and trans isomers of 1,2-dimethylcyclohexane, 1,3- dimethylcyclohexane, and 1,4-dimethylcyclohexane. (a ) Indicate by a label whether each methyl group is axial or equatorial. (b) For which isomer(s) are the alternative chair conformations of equal stability? (c) For which isomer(s) is one chair conformation more stable than the other?arrow_forwardSight along the C2-C1 bond of 2-methylpropane (isobutane).(a) Draw a Newman projection of the most stable conformation.(b) Draw a Newman projection of the least stable conformation.(c) Make a graph of energy versus angle of rotation around the C2-C1 bond.(d) Assign relative values to the maxima and minima in your graph, given that an H↔H eclipsing interaction costs 4.0 kJ/mol and an H↔CH3 eclipsing interaction costs 6.0 kJ/mol.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_forward9) Draw trans-1,3-dichloro cyclohexane in the highest energy conformation.arrow_forwardConsider 1-bromopropane, CH3CH2CH2Br. (a) Draw Newman projections for the conformations in which -CH3 and -Br are gauche (dihedral angles 60° and 300°).arrow_forward
- 4. (a) Draw a skeletal (line-bond) structure for 3,4-dimethylhexane. (b) Draw a sawhorse representation of any staggered conformation of this molecule looking down the carbon-3 to carbon-4 bond. (c) Draw a Newman projection looking down the carbon-3 to carbon-4 bond of the same conformation that you drew as a sawhorse representation.arrow_forward(a) Draw the most stable chair conformers of trans-1,3-diisopropylcyclohexane and trans-1,4-diisopropylcyclohexane. (b) Which is more stable: trans-1,3-diisopropylcyclohexane or trans-1,4-diisopropylcyclohexane?arrow_forward(B) Draw two chair conformations of the following substituted cyclohexane and identify the most stable conformation. Clearly show the axial and equatorial bonds.arrow_forward
- Use a Newman projection about the indicated bond to draw the most stable conformer for each compound. (a) 3-methylpentane about the C2¬C3 bondarrow_forwardWrite a conformational structure for 1,2,3-trimethylcyclohexane in which all the methyl groups are axial and then show its more stable conformation.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
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