Organic Chemistry
Organic Chemistry
3rd Edition
ISBN: 9781119338352
Author: Klein
Publisher: WILEY
Question
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Chapter 4, Problem 67IP

(a)

Interpretation Introduction

Interpretation:

Chair conformations of given compound should be drawn and most stable conformer is needed to be predicted between them and stable conformation at equilibrium also needed to be find.

Concept introduction:

Chair conformer: chair conformer is a stable conformer for cyclohexane compound. In this chair conformer two positions are important for substitutions one is equatorial and other one axial position. Axial positions are parallel to the axis of ring while equatorial positions are perpendicular to the axis of the ring.

Example:

Organic Chemistry, Chapter 4, Problem 67IP , additional homework tip  1

After ring flip of the conformer, axial position becomes equatorial and equatorial position becomes axial.

Stereochemistry conversions in chair conformation are shown below.

Substituent position cis trans
1,2 position (a,e) or (e,a) (a,a) or (e,e)
1,3 position (a,a) or (e,e) (a,e) or (e,a)
1,4 position (a,e) or (e,a) (a,a) or (e,e)

(b)

Interpretation Introduction

Interpretation:

Chair conformations of given compound should be drawn and most stable conformer is needed to be predicted between them and stable conformation at equilibrium also needed to be find.

Concept introduction:

Chair conformer: chair conformer is a stable conformer for cyclohexane compound. In this chair conformer two positions are important for substitutions one is equatorial and other one axial position. Axial positions are parallel to the axis of ring while equatorial positions are perpendicular to the axis of the ring.

Example:

Organic Chemistry, Chapter 4, Problem 67IP , additional homework tip  2

After ring flip of the conformer, axial position becomes equatorial and equatorial position becomes axial.

Stereochemistry conversions in chair conformation are shown below.

Substituent position cis trans
1,2 position (a,e) or (e,a) (a,a) or (e,e)
1,3 position (a,a) or (e,e) (a,e) or (e,a)
1,4 position (a,e) or (e,a) (a,a) or (e,e)

(c)

Interpretation Introduction

Interpretation:

Chair conformations of given compound should be drawn and most stable conformer is needed to be predicted between them and stable conformation at equilibrium also needed to be find.

Concept introduction:

Chair conformer: chair conformer is a stable conformer for cyclohexane compound. In this chair conformer two positions are important for substitutions one is equatorial and other one axial position. Axial positions are parallel to the axis of ring while equatorial positions are perpendicular to the axis of the ring.

Example:

Organic Chemistry, Chapter 4, Problem 67IP , additional homework tip  3

After ring flip of the conformer, axial position becomes equatorial and equatorial position becomes axial.

Stereochemistry conversions in chair conformation are shown below.

Substituent position cis trans
1,2 position (a,e) or (e,a) (a,a) or (e,e)
1,3 position (a,a) or (e,e) (a,e) or (e,a)
1,4 position (a,e) or (e,a) (a,a) or (e,e)

Blurred answer

Chapter 4 Solutions

Organic Chemistry

Ch. 4.2 - Prob. 4LTSCh. 4.2 - Prob. 8PTSCh. 4.2 - Prob. 9PTSCh. 4.2 - Prob. 10ATSCh. 4.2 - Prob. 5LTSCh. 4.2 - Prob. 11PTSCh. 4.2 - Prob. 12PTSCh. 4.2 - Prob. 13ATSCh. 4.3 - Prob. 6LTSCh. 4.3 - Prob. 14PTSCh. 4.3 - Prob. 15ATSCh. 4.6 - Prob. 7LTSCh. 4.6 - Prob. 16PTSCh. 4.6 - Prob. 17ATSCh. 4.7 - Prob. 18CCCh. 4.8 - Prob. 8LTSCh. 4.8 - Prob. 19PTSCh. 4.8 - Prob. 20ATSCh. 4.11 - Prob. 9LTSCh. 4.11 - Prob. 21PTSCh. 4.11 - Prob. 22ATSCh. 4.11 - Prob. 10LTSCh. 4.11 - Prob. 23PTSCh. 4.11 - Prob. 24ATSCh. 4.12 - Prob. 11LTSCh. 4.12 - Prob. 25PTSCh. 4.12 - Prob. 26ATSCh. 4.12 - Prob. 27CCCh. 4.13 - Prob. 12LTSCh. 4.13 - Prob. 28PTSCh. 4.13 - Prob. 29ATSCh. 4.13 - Prob. 13LTSCh. 4.13 - Prob. 30PTSCh. 4.13 - Prob. 31ATSCh. 4.13 - Prob. 32ATSCh. 4.14 - Prob. 33CCCh. 4.14 - Prob. 34CCCh. 4.14 - Prob. 35CCCh. 4 - Prob. 36PPCh. 4 - Prob. 37PPCh. 4 - Prob. 38PPCh. 4 - Prob. 39PPCh. 4 - Prob. 40PPCh. 4 - Prob. 41PPCh. 4 - Prob. 42PPCh. 4 - Prob. 43PPCh. 4 - Prob. 44PPCh. 4 - Prob. 45PPCh. 4 - Prob. 46PPCh. 4 - Prob. 47PPCh. 4 - Prob. 48PPCh. 4 - Prob. 49PPCh. 4 - Prob. 50PPCh. 4 - Prob. 51PPCh. 4 - Prob. 52PPCh. 4 - Prob. 53PPCh. 4 - Prob. 54PPCh. 4 - Prob. 55PPCh. 4 - Prob. 56PPCh. 4 - Prob. 57PPCh. 4 - Prob. 58PPCh. 4 - Prob. 59PPCh. 4 - Prob. 60PPCh. 4 - Prob. 61IPCh. 4 - Prob. 62IPCh. 4 - Prob. 64IPCh. 4 - Prob. 65IPCh. 4 - Prob. 66IPCh. 4 - Prob. 67IPCh. 4 - Prob. 68IPCh. 4 - Prob. 69IPCh. 4 - Prob. 70IPCh. 4 - All of the following are representations of...Ch. 4 - Prob. 72IPCh. 4 - Which of the following is expected to have the...Ch. 4 - Prob. 74IPCh. 4 - Prob. 75CPCh. 4 - The all-trans-1,2,3,4,5,6-hexaethylcyclohexane...Ch. 4 - Compounds 1 and 2 were prepared, and the...
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