Show me the steps to solve thisplease!1. (3 pts) For the following molecule, draw the Newman projection in its syn, anti, and gaucheconformers about the C3-C4 bond, where C3 is the front carbon in the projection.Anti:Syn:Gauche:2. (3 points) Draw the following cyclohexanes in their lowest energy chain conformations.он1 of 2

Step 1: Newman projections are a way to visualize the spatial arrangement of atoms around a single…

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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3.(a) Draw Newman projections for the anti, gauche and fully eclipsed conformers of hexane as viewed through C-3 (the third carbon) You do not need to draw the graph nor all of the structures. One of each type is enough (b) Rank them in order of stability (1-most stable, 3-least stable) © What types of strain are present in each
(5) a. Draw the LOWEST energy conformer of the following compound in a Newman Projection. The projection should be as if you are looking down the 2-1 C-C bond, with carbon 2 in front.
1
5. Please consider the Newman projection of tartaric acid drawn below as an eclipsed conformer (1). Please draw the most stable conformer and two intermediate energy conformers noting that staggered conformers are lower in energy than eclipsed forms even if the staggered conformers have gauche relationships between groups. [Draw the substituents H and OH on the front carbons and H, OH and CO₂H on the back carbons based on staggered forms. -CO₂H is larger than -OH.] OH COH ICOOH COOH COOH 1 2 COOH COOH 3 4 Staggered Staggered Staggered (most stable) Indicate the number of each conformer above (1, 2, 3 and 4) that corresponds to the relative energies below. Ref=0 Rotation 6. (60 points) a. Are compounds 1 and 2 below enantiomers, diastereomers or identical? OH OH HO HO LOH HO HO OH 2 OH OH b. Please complete the zig-zag conformation of the compound (3R,4S)-3,4-dichloro-2,5-dimethylhexane by writing the respective atoms in the boxes. 3.
4. (4 pts) i- Represent the most stable conformation for the cyclohexane derivatives a through c shown below using the templates provided. ii- Draw in the box the 2D representation of d using stereobonds. a b с SH Templates for part a: OH d OH
Aa.17.
2. Draw the most stable conformer of the substituted cyclohexane shown below. OCH 3 HOW HO LOCH3 CH3 CH3 Extension: If the -OCH3 stereocentre was inverted (i.e. pointed in the opposite direction) would the resulting compound be more or less stable that the compound shown above? Explain your reasoning. Note this question is NOT asking whether the resulting conformer is more or less stable (it would be less, as the large -OCH3 group would be axial), but rather, the molecule overall. In the current molecule, the 'best case' conformer has 2/3 groups equatorial - the largest group and the smallest group. If the -OCH3 stereocentre was inverted, you could ring-flip to get a conformer that again has 2/3 groups equatorial, this time the largest 2. This would be more stable than the most stable conformer of the original molecule.
Consider rotation around the C2–C3 single bond of 2-methylpentane. Using the Newman projection templates shown below, (i) draw all possible conformations (ii) arrange these four conformations in the order most stable to least stable
5 (a) (8 pts) (a) Box the most stable Z alkene (make sure it's Z!). (b) Circle the least stable E alkene. (c) Label two alkenes which are neither E or Z. NH₂ 5 Je č F HO NH₂ SH 5(b) (4 pts) Draw an example of two conformations of a molecule of your choice, and then draw a separate example of two stereoisomers of another molecule of your choice.
3. Draw Newman projection for the highest and lowest energy conformers of your assigned molecule. Provide a rationale to support your answer. In other words, why is the highest energy conformer so high in energy? Why is the lowest energy conformer low in energy? Molecule (2R,3S)-2-Bromo-3- Floro butane
1. Chair Strain (a) Consider (1R,2S,3S,4S)-1,4-dibromo-2-(tert-butyl)-3-methylcyclohexane. Circle the location (axial or equatorial) for each substituent in this molecule's most stable chair conformer. (b) (၁) Br 1-Br axial equatorial *Bu tBu axial equatorial "CH3 CH 3 axial equatorial Br 4-Br axial equatorial Draw the most stable chair conformer, adding only the substituents (not the hydrogen groups of those stereocenters) onto the chair below. Complete the table below, indicating how many of each type of interaction is present in total for the most stable chair conformer as described in (a). gauche interactions between gauche interactions 1,3-diaxial interactions substituents and the ring between substituents between substituents
4. For each disubstituted cyclohexane below, draw its ring-flip isomer. Circle the most stable conformation and label the substituent groups as axial or equatorial. (a) CH3 CH; (b) (CH3)C CH3

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