2. Chair Strain (a) Consider the following cyclohexane derivative. Circle the location (axial or for each substituent in this molecule's most stable chair conformer. (b) (c) ( F axial equatorial Br axial equatorial Br CH3 Ph axial equatorial Ph CH3 axial equatorial equatorial) Draw the chair conformer described in (a), adding only the substituents (not the hydrogen groups of those stereocenters) onto the template below. O Complete the table, indicating how many of each type of interaction is present in total for the chair conformer described in (a). gauche interactions between gauche interactions substituents and the ring between substituents 1,3-diaxial interactions between substituents (d) ( Draw the other conformer that results from a chair flip onto the template below. Ma the changes that happen in the chair flip, but don't make other changes. Only draw substituer

2. Chair Strain (a) Consider the following cyclohexane derivative. Circle the location (axial or for each substituent in this molecule's most stable chair conformer. (b) (c) ( F axial equatorial Br axial equatorial Br CH3 Ph axial equatorial Ph CH3 axial equatorial equatorial) Draw the chair conformer described in (a), adding only the substituents (not the hydrogen groups of those stereocenters) onto the template below. O Complete the table, indicating how many of each type of interaction is present in total for the chair conformer described in (a). gauche interactions between gauche interactions substituents and the ring between substituents 1,3-diaxial interactions between substituents (d) ( Draw the other conformer that results from a chair flip onto the template below. Ma the changes that happen in the chair flip, but don't make other changes. Only draw substituer

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter2: Alkanes And Cycloalkanes

Section2.6: Cis,trans Isomerism In Cycloalkanes And Bicycloalkanes

Problem 2.13P: Following is a planar hexagon representation for one isomer of 1,2,4-trimethylcyclohexane. Draw the...

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Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This group is called an ethyl group and can be considered a sphere about twice the sizeof a methyl group. Draw the following Newman projections sighting down the C1C2 bond... a. The lowest potential energy conformation. b. The highest potential energy staggered conformation.
Consider the Newman projection below. a. Draw a full Lewis structure of this molecule with R1=Me,R2=Et , and R3=iPr . b. Given the sizes of these R groups (R3R2R1) , does the Newman projection above show thelowest potential energy conformation of this bond? If not, draw a Newman projectionshowing the lowest P.E. conformation (sighting down this same bond). c. To draw a Newman projection in the lowest P.E. conformation, the following rule of thumbusually applies: Place the largest group on the front carbon anti to the largest group on theback carbon. Is your answer to the previous question consistent with this rule of thumb?
Fill in the blanks: cis-1,3-Dimethylcyclohexane has two different chair conformations: one withboth methyl groups in __________ positions and one with both methyl groups in ____________ positions.
Pertanyaan yang ada pada gambar
Draw a chair conformation of this molecule with (a) all CH3 groups in axial positions and (b) all CH3 groups in equatorial positions.
There are three distinct chair conformations for cyclohexylcyclohexane. (a) Draw all three and (b) determine which one is the most stable. Cyclohexylcyclohexane
Draw the “chair twist" of the following molecules. Label the more stable conformation. Br •CH3 OH Draw planar models of the above molecules. Draw both chair conformation of the following molecule, and identify the most stable form. Me Me ....Et Me
Predict the most stable conformation for each of the following molecules. Brietly explain why your conformer is the more stable conformation. a) b) OH OH
Solve this problem
a) Draw the chair conformations of 1, 4 – ditertbutyl cyclohexane and all of its ring flips.b) Determine the most stable and least stable conformations. Explain your answer.
2. Chair Strain (a) Consider the following cyclohexane derivative. Circle the location (axial or for each substituent in this molecule's most stable chair conformer. F axial equatorial Br axial equatorial Bru CH3 Ph axial equatorial Ph CH3 axial equatorial equatorial)
Consider the following chair conformation of bromocyclohexane: H H H Br H H H (a) Identify whether the bromine atom occupies an axial position or an equatorial position in the conformation above. (b) Draw a bond-line drawing (skeletal structure) of this chair conformation (without Newman projections). (c) Draw a bond-line drawing of the other chair conformation (after a ring flip).