Consider the structure of 1-bromo-2-fluoroethane.Part 1 of 2Draw the Newman projection for the anti conformation of 1-bromo-2-fluoroethane, viewed down the C1-C2 bond.✡ぬPart 2 of 2HHFBrHH☑Draw the Newman projection for the gauche conformation of 1-bromo-2-fluoroethane, viewed down the C1-C2 bond.HFBrHH

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Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter4: Organic Compounds: Cycloalkanes And Their Stereochemistry

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Problem 35AP: A 1, 2-cis disubstituted cyclohexane, such as cis-1, 2-dichlorocyclohexane, must have one group...

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A 1, 2-cis disubstituted cyclohexane, such as cis-1, 2-dichlorocyclohexane, must have one group axial and one group equatorial. Explain.
9
Write a structure ( Chair conformation )
5. a-G a- Convert the following Newman projection into the bond line structural formula. Must use stereobonds to indicate the orientation of the groups. H3CO CN b- Draw the anti, gauche, and eclipsed conformations of the following molecule using Newman projection. H H H H c- i. Which cyclopropane molecule has the highest torsional strain? ii. Which cyclopropane molecule has the lowest torsional strain? C b a
4. What are the absolute configurations of these two molecules? SH 6. (A) H 5. Which Newman projection represents the most stable conformation of 3-methylpentane when viewed down the 2-3 carbon-carbon bond? CH₂CH3 H3C. H3C H Н (В) Which is/are optically inactive? Н. ОН CH3 H3C, CH₂CH3 HTH Н H₂CH₂C H3C I CH3 ОН I CH3 НО CO₂H Н. (C) H3C CH3 LOH II Н CH3 H H н CH₂Br HOCH 3 CH₂CH3 CH3 III CH₂CH3 II (D) CH₂CH3 OH -H OH CH3 III H3C. H3C H Н CH₂CH3 CH3
Draw the Newman projection of the cyclohexane looking along the C1- C2 and C5 – C4 bonds and methylcyclohexane looking along the C1– C2 and C5 – C4 bonds.
Click the Newman projection that represents the lowest energy conformation of n-butane. H3C. H3C. H3C. H CH3 H Н Н H Н H CH3 CH3 I HC CH3 HC H H H3C H HC -н Н -H CH3
Sighting down the Ci-C2 bond axis of 1-bromopentane, Br-CH2-CH2CH2CH»CH3, draw the Newman projection of a) the anti staggered conformation b) the gauche staggered conformation c) the two eclipsed conformations. Which eclipsed structure would you expect to have the highest strain energy?
Sight 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.
Use flat representation of rings, not chair in the drawing
Organic Chemistry Мaxwell presented by Macmillan Learning Complete the most stable chair conformation of trans-1-tert-butyl-3-methylcyclohexane by filling in the missing atoms. Use the numbering provided on the ring. H Answer Bank 1 H. methyl tert-butyl H H H- 4 3 H H. CO 2.
Complete the given chair conformation of cyclohexane by adding the listed substituents to the specified position and bond direction. Substituent Position Bond direction CH3 CH3 OH F 3 6 1 3 axial axial equatorial equatorial

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