, draw itsand then in the2. For (1R, 2S, 4R)-4-tert-buyl-1-ethyl-2-methylcyclohexane: draw its correct skeletal structuremost stable conformer first showing the Hydrogens that are directly attached to the ringlast stusture omit the hydrogens that are directly connected to the ring and draw the correct positions of the threealkyl groups in skeletal representation.Draw all bonds with the same length!5.draw the correct skeletalstructure here showingstereochemistryon this chair draw the most stable conformerincluding the H's directly attached to the ringon this chair draw only the alkyl groups,all bonds same lenght

Drawing skeletal structure of (1R,2S,4R)-4-tert-butyl-1-ethyl-2-methylcyclohexane.

Answered: , draw its and then in the 2. For (1R,…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter6: Alkanes & Alkenes

Section: Chapter Questions

Problem 4E: Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This...

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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.
Build a model of methylcyclohexane, and use the model to complete the following Newmanprojections of methylcyclohexane in the chair conformation: a. When the methyl group is in an axial or equatorial (circle one) position, the molecule is inits lowest potential energy conformation. b. Label one Newman projection above anti and the other gauche to describe the relationshipbetween the methyl group and C3 of the ring. c. In general, which is a lower PE conformation, anti or gauche? d. Explain how your answer to b and c provide an explanation for why it is more favorable fora large group to be in an equatorial than an axial position.
Using your model of butane (CH3CH2CH2CH3) , complete the following graph of the anglebetween the two Me groups vs. potential energy. a. Label each Newman projection of butane on the graph with the words staggered, eclipsed, gauche, and anti, as appropriate. (Note that some structures will have more than one label.) b. Draw a wedge and dash bond representation of butane in its lowest P.E. conformation.
Consider the structural/conformational isomers of isopropyldimethylcyclohexane shown below. Match each isomer to the statement that best describes its properties. VHas the least steric repulsion / steric strain. EVHas the most torsional and steric strain overall Me iPr, VHas a syn-pentane interaction between two (or more) non-hydrogen substituents Me VIs the lowest energy boat conformation shown В. H. Ме iPr Me C. Me iPr `Me H D. iPr Me Me E. Me Me H- iPr
Q2. a) Draw the Newman projection of the most stable staggered conformation of 2-methylpentane, looking down the 3,4 bond. H3C c-CH2-CH2CH3 H3C´H b) The structure of cis-1-tert-butyl-3-methylcyclohexane is shown below. Draw both chair forms of this molecule, and circle the one you think is less stable. Me 't-Bu
1. Draw the correct skeletal structure of 4,4-dibromo-1-butanol: : draw its most stable conformer looking along C2-C3 the Newman projection to differentiate them from methyl groups and draw all the carbons skeletal and on the Newman Projection provided Draw the hydrogens that are directly connected to draw the correct skeletal structure here , draw its and then in the 2. For (1R, 2S, 4R)-4-tert-buyl-1-ethyl-2-methylcyclohexane: draw its correct skeletal structure most stable conformer first showing the Hydrogens that are directly attached to the ring last stusture omit the hydrogens that are directly connected to the ring and draw the correct positions of the three alkyl groups in skeletal representation : Draw all bonds with the same length! draw the correct skeletal structure here showing stereochemistry this chair draw the most stable confomer including the H's directly attached to the ring on this chair draw only the alkyl groups, all bonds same lenght
Compare the following conformers of butan-2-ol. Match each conformer to their corresponding relative energy. Recall, the more stable the conformer the lower the energy. 1. ОН CH3 CH3 H 2nd Highest Energy 2. HỌH CH3 2nd Lowest Energy H3C OH Highest Energy 3. H3C. CH3 Lowest Energy OH H. CH3 4. >
- Consider 1-bromopropane(propyl bromide). I) Draw a Newman projection (conformation) in which methyl and bromine are anti. II) Draw a Newman projection (conformation) in which methyl and bromine are in gauche. II) Draw a Newman projection (conformation) which represents the least stable eclipsed conformation.
1: Draw the chain conformer of... 1a. Cyclohexane, label all the axial and equatorial hydrogens 1b. The most stable conformer of ethylcyclohexane 1c. The most sable conformer of trans-1-tert-butyl-3-methylcyclohexane
Draw most stable chair conformation for cis-1-tert-butyl-4-methylcyclohexane in the image below.
In each case below, identify the higest and lowest energy conformations. In cases where two or three conformations are degenerate, choose only one as your anwser. Use Me, H, and Et when drawing the structures.

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