Choose all eclipsed conformers that result from rotation about the C-2 - C-3 bond of pentane. Check all that apply. ☐ U CH3CH2 CH3 H H H H HCH3 CHÍCH, H CH3 H H H CH2CH3 HCH3 CH3CH2 CH3 H H H CH2CH3 H CH3 CH2CH3 H H H
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- Following is a chair conformation of cyclohexane with the carbon atoms numbered 1 through 6. (a) Draw hydrogen atoms that are above the plane of the ring on carbons 1 and 2 and below the plane of the ring on carbon 4. (b) Which of these hydrogens are equatorial? Which are axial? (c) Draw the alternative chair conformation. Which hydrogens are equatorial? Which are axial? Which are above the plane of the ring? Which are below it?Starting from the wedge-and-dash structure below, rotate the back carbon to provide the Newman projection in the most stable conformation. H₂C H (H3C) 3C H H CH3 →draw a stable conformation of this compound
- Starting from the wedge-and-dash structure below, rotate the back carbon to provide the Newman projection in the most stable conformation. H3C H H3C H Br HDraw a Newman projection for two more staggered conformations of this molecule. Which of your conformations is most stable? Assume that -OH and -CH3 are comparable in size.Looking alongC1−C2andC4−C5bonds, draw a Newman projection for each of the two chair conformations of trans 1,2-dimethylcyclohexane.
- Starting from the wedge-and-dash structure below, rotate the back carbon to provide the Newman projection in the most stable conformation. H3C H Br H H3C H QSee image belowDraw the most stable conformer of trans-1-t-butyl-3-methylcyclohexane. the structure should clearly distinguish between axial and equatorial positions
- Starting from the wedge-and-dash structure below, rotate the back carbon to provide the Newman projection in the most stable conformation. I 1 H3C H" H3C Drawing > H Br HRotate the back carbon to provide the structure with the least stable conformation4- Use Newman projections to represent the most stable conformer for the following molecules (remember to assign Gauche interactions). Br HN