Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 4.SE, Problem 41AP
Interpretation Introduction
Interpretation:
The substituent is to be identified as axial or equatorial in the cyclohexane.
Concept Introduction:
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The skeletal line formula for a branched alkene is shown below. (i) What is the molecular formula of this compound? (ii) How many carbon atoms are in the longest chain, ignoring the double bond? (iii) What is the longest chain incorporating both carbons of the double bond? (iv) How many substituents are on this chain? (v) Give the IUPAC name for this compound. [6]
Assume that you have a variety of cyclohexanes substituted in the positions indicated. Identify the substituents as either axial or equatorial.For example, a 1,2-cis relationship means that one substituent must be axial and one equatorial, whereas a 1,2-trans relationship means that either both substituents are axial or both are equatorial.
a) 1,3-cis-disubstituted b) 1,2-trans-disubstituted c) 1,4-trans-disubstituted
Chapter 4 Solutions
Organic Chemistry
Ch. 4.1 - Give IUPAC names for the following cycloalkanes:Ch. 4.1 - Draw structures corresponding to the following...Ch. 4.1 - Name the following cycloalkane:Ch. 4.2 - Prob. 4PCh. 4.2 - Draw the structures of the following molecules:...Ch. 4.2 - Prostaglandin F2α, a hormone that causes uterine...Ch. 4.2 - Name the following substances, including the cis-...Ch. 4.3 - Each H↔H eclipsing interaction in ethane costs...Ch. 4.3 - cis-1, 2-Dimethylcyclopropane has more strain than...Ch. 4.4 - Prob. 10P
Ch. 4.4 - Two conformations of cis-l, 3-dimethylcyclobutane...Ch. 4.6 - Draw two different chair conformations of...Ch. 4.6 - Draw two differant chair conformations of trans-1,...Ch. 4.6 - Prob. 14PCh. 4.7 - What is the energy difference between the axial...Ch. 4.7 - Prob. 16PCh. 4.7 - Look at Figure 4-12 on page 105, and estimate the...Ch. 4.8 - Draw the more stable chair conformation of the...Ch. 4.8 - Identify each substituent in the following...Ch. 4.9 - Which isomer is more stable, cis-decalin or...Ch. 4.9 - Look at the following structure of the female...Ch. 4.SE - Prob. 22VCCh. 4.SE - Name the following compound, identify each...Ch. 4.SE - A trisubstituted cyclohexane with three...Ch. 4.SE - The following cyclohexane derivative has three...Ch. 4.SE - Prob. 26VCCh. 4.SE - Draw the five cycloalkanes with the formula C5H10.Ch. 4.SE - Draw two constitutional isomers of cis-1,...Ch. 4.SE - Prob. 29APCh. 4.SE - Tell whether the following pairs of compounds are...Ch. 4.SE - Prob. 31APCh. 4.SE - Prob. 32APCh. 4.SE - Draw 1, 3, 5-trimethylcyclohexane using a hexagon...Ch. 4.SE - Hydrocortisone, a naturally occurring hormone...Ch. 4.SE - A 1, 2-cis disubstituted cyclohexane, such as...Ch. 4.SE - A 1, 2-trans disubstituted cyclohexane must have...Ch. 4.SE - Prob. 37APCh. 4.SE - Which is more stable, a 1, 4-trans disubstituted...Ch. 4.SE - cis-1, 2-Dimethylcyclobutane is less stable than...Ch. 4.SE - From the data in Figure 4-12 and Table 4-1,...Ch. 4.SE - Prob. 41APCh. 4.SE - Draw the two chair conformations of...Ch. 4.SE - Draw the two chair conformations of...Ch. 4.SE - Galactose, a sugar related to glucose, contains a...Ch. 4.SE - There are four cis-trans isomers of menthol...Ch. 4.SE - There are four cis-trans isomers of menthol...Ch. 4.SE - The diaxial conformation of cis-1,...Ch. 4.SE - Approximately how much steric strain does the...Ch. 4.SE - In light of your answer to Problem 4-43, draw the...Ch. 4.SE - Prob. 50APCh. 4.SE - Prob. 51APCh. 4.SE - Using molecular models as well as structural...Ch. 4.SE - trans-Decalin is more stable than its cis isomer,...Ch. 4.SE - As mentioned in Problem 3-53, the statin drugs,...Ch. 4.SE - myo-Inositol, one of the isomers of...Ch. 4.SE - How many cis–trans stereoisomers of myo-inositol...Ch. 4.SE - The German chemist J. Bredt proposed in 1935 that...Ch. 4.SE - Tell whether each of the following substituents on...Ch. 4.SE - Prob. 59APCh. 4.SE - Prob. 60APCh. 4.SE - Ketones react with alcohols to yield products...Ch. 4.SE - Alcohols undergo an oxidation reaction to yield...
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- Assume that you have a variety of cyclohexanes substituted in the positions indicated. Identify the substituents as either axial or equatorial. For example, a 1,2-cis relationship means that one substituent must be axial and one equatorial, whereas a 1,2-trans relationship means that either both substituents are axial or both are equatorial. a) 1,6-cis-disubstituted b) 1,2-trans-disubstituted c) 1,3-trans-disubstitutedarrow_forwardAssume that you have a variety of cyclohexanes substituted in the positions indicated. Identify the substituents as either axial or equatorial. For example, a 1,2-cis relationship means that one substituent must be axial and one equatorial, whereas a 1,2-trans relationship means that either both substituents are axial or both are equatorial. a) 1,4-cis-disubstituted b) 1,6-cis-disubstituted c) 1,2-cis-disubstituted Submit Answer Try Another Version 6 item attempts remaining optioins fill please both axial only both equatorial only both axial or both equatorial one axial-one equatorialarrow_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
- Consider 1-bromopropane, CH3CH2CH2Br. (a) Draw a Newman projection for the conformation in which CH3 and -Br are anti (dihedral angle 180°). (b) Draw Newman projections for the conformations in which - CH3 and -Br are gauche (dihedral angles 60° and 300°). (c) Which of these is the lowest energy conformation? (d) Which of these conformations, if any, are related by reflection?arrow_forwardAssume you have a variety of cyclohexane substrates in the position indicated. For example a 1,2-cis relationship means that the substituents must be axial and equatorial. Choose all the correct answers. 1,3-trans disubstituted cyclohexane →axial, axial /equatorial, equatorial 1,4-cis disubstituted cyclohexane →axial, equatorial /equatorial, axial 1,5-trans disubstituted cyclohexane →axial, equatorial /equatorial, axial 1,5-cis disubstituted cyclohexane →axial, equatorial /axial, equatorialarrow_forwardDraw 1,2,3,4,5,6-hexamethylcyclohexane with the methyl group(a) in axial positionsarrow_forward
- 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.)arrow_forwardIncreased substitution around a bond leads to increased strain. Take the four substituted butanes listed below, for example. For each compound, sight along C2-C3 bond and draw Newman projections of the most and least stable conformations. (a) 2-Methylbutane (b) 2,3-Dimethylbutane (a) 2,2-dimethylbutane (c) 2,2,3-Trimethylbutanearrow_forwardFor each alkene, indicate the direction of the dipole moment. For each pair, determine which compound has the largerdipole moment.(a) cis-1,2-difluoroethene or trans-1,2-difluoroethene(b) cis-1,2-dibromoethene or trans-2,3-dibromobut-2-enearrow_forward
- 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.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_forwardDraw 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_forward
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