Consider the three structures. 1,1-dimethylcyclobutane IIII... (a) Which of these structures has the most angle strain? 1,1,3,3,5,5-hexamethylcyclohexane staggered butane 1,1,3,3,5,5-hexamethylcyclohexane 1,1-dimethylcyclobutane (c) Which of these structures has the most torsional (eclipsing) strain? staggered butane 1,1-dimethylcyclobutane 1,1,3,3,5,5-hexamethylcyclohexane staggered butane H ر H3C H H 1,1-dimethylcyclobutane staggered butan CH3 (b) Which of these structures has the most steric strain? 1,1,3,3,5,5-hexamethylcyclohexane

Consider the three structures. 1,1-dimethylcyclobutane IIII... (a) Which of these structures has the most angle strain? 1,1,3,3,5,5-hexamethylcyclohexane staggered butane 1,1,3,3,5,5-hexamethylcyclohexane 1,1-dimethylcyclobutane (c) Which of these structures has the most torsional (eclipsing) strain? staggered butane 1,1-dimethylcyclobutane 1,1,3,3,5,5-hexamethylcyclohexane staggered butane H ر H3C H H 1,1-dimethylcyclobutane staggered butan CH3 (b) Which of these structures has the most steric strain? 1,1,3,3,5,5-hexamethylcyclohexane

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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Consider the three structures. 1,1-dimethylcyclobutane 1,1,3,3,5,5-hexamethylcyclohexane (a) Which of these structures has the most angle strain? O 1,1-dimethylcyclobutane O 1,1,3,3,5,5-hexamethylcyclohexane staggered butane (c) Which of these structures has the most torsional (eclipsing) strain? O 1,1,3,3,5,5-hexamethylcyclohexane O 1,1-dimethylcyclobutane staggered butane staggered butane H HI H3C staggered butane H (b) Which of these structures has the most steric strain? CH3 O 1,1-dimethylcyclobutane 1,1,3,3,5,5-hexamethylcyclohexane
6. For each of the following, draw the most stable chair form and identify whether the more stable stereoisomer would be the cis or the trans stereoisomer? a) trans 3-tert-butyl-1-methylcyclohexane b) Cis-2-chloro-1-ethylcyclohexane c) trans-3-butyl-1-isopropylcyclohexane d) trans-4-hydroxy-1-t-butylcyclohexane چار
3. Draw the bond line structure that corresponds to the names of the following compounds: a) (S)-6-chloro-1-methylcyclohexa-1,4-diene. b) (S)-hept-5-yn-2-ol
Will the cyclopropane formed be facing same direction as substituents or away?(will it have dashed wedges)?
4. Predict the most stable conformation of cis-1- isopropyl-4-ethylcyclohexane. A) The isopropyl group is axial and the ethyl group is equatorial. B) Both groups are axial. C) Both groups are equatorial. D) The isopropyl group is equatorial and the ethyl group is axial. E) There is no way to predict for this molecule.
a. b. For the following two pairs of molecules, (1) Draw out the chair conformation for each molecule, flip the ring if it is possible. (2) Compare both molecules to circle out which one is more stable. (3) Identify their relationship as: constitutional isomer, conformational isomer, stereoisomer or identical. (4) Find all the chiral center on each molecule and label them. Br.. Ax < and and H. H H Br H H
3. Name the following alkynes. (a) (b) CH3CH₂CH₂CH₂CH₂CH₂C = CH CH₁ CH₂-CH-CH-CH-CH—C—CH CH₂ CH₂ CH₂, CH₁ (3.b/ is Double bond)
Starting from the structure below (sighting down the indicated bond). rotate the back carbon to provide an eclipsed conformer of the structure. Ph H H HI!!! ++||||4 CH₂CH3 I I I I I I H Draw Newman Projection I I I
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2) a) Provide Newman projects of the three staggered conformations of molecule 1 shown below looking down the indicated bond (1→2). Circle the most stable conformation. HH3C CH3 H molecule 1 b) Provide Newman projects of the three eclipsed conformations of molecule 1 looking down the indicated bond. Put a square around the least stable conformation.
answer both
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