2)- Determine the total number of conformers of the tetra-substituted cyclohexane structure given below (L.e,Draw the chair conformers of A that are, 6-levels of stability from the most stable of A, the sixth most staatconformer ofA, 9-levels that is unstable from the most unstable of A, and 5-levels of instafrom the most unstable of A and the conformers of A that is representative of B.Note, only a total of six structures should be written on your paper. Also, include hydrogen atoms whereverare substituents on all of your chair conformers. Note, a table listing is a requirement for this problermAnswer (Total # of Conformers of A):6-Levels of stability from the most stable of A:The sixth most stableconformer of A:9-Levels that is unstable from the most unstable of A5-levels of instability from the most unstable of A스Conformers of A that is representative of B:

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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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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.
Use your answers from Problem 2.48 to complete the table showing correlations between cis,trans and axial,equatorial for disubstituted derivatives of cyclohexane. Draw the alternative chair conformations for the cis and trans isomers of 1,2-dimethylcyclohexane, 1,3-dimethylcyclohexane, 1,4-dimethylcyclohexane. (a) Indicate by a label whether each methyl group is axial or equatorial.
a model of cyclohexane in a chair conformation, and explain why the names “axial” and“equatorial’ are appropriate.
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?
Following is a planar hexagon representation for one isomer of 1,2,4-trimethylcyclohexane. Draw the alternative chair conformations of this compound and state which of the two is more stable.
Consider 1-bromo-2-methylpropane and draw the following. (a) The staggered conformation(s) of lowest energy (b) The staggered conformation(s) of highest energy
In the next chapter we'll look at cycloalkanesâ€”saturated cyclic hydrocarbonsâ€”and weâ€™ll see that the molecules generally adopt puckered, nonplanar conformations. Cyclohexane, for instance, has a puckered shape like a lounge chair rather than a flat shape. Why?
Which of the following is the highest energy chair conformer of the most stable isomer of 1-ethyl-2,4-dimethylcyclohexane? A | B II C) III IV = || ||| > IN
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.
which drawing below represents the most stable conformation methyl cyclo hexon e of cis-1-ethyl-4. OBA #2
4.) For each of the following pairs, give the relationship between the two compounds. You many ignore conformational isomerism here, and any conformers may be considered to be identical compounds. H H. a. H H H. H F F CH, b. он CH3 он c. CH, он он CH3 d. CHs CH3 CH, CH3 CH, .CH2 Br H. H. Br CH3 CH3 Br Br f. CH, H. CH3 он H. H Br Br H. OH 2
3)) Draw the most stable chair conformation of a 1,2,4-trimethylcyclohexane (Show all the hydrogens and indicate if the bond is axial or equatorial at the substitution).

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