ORGANIC CHEMISTRY (LL) W/WILEYPLUS NEXT
12th Edition
ISBN: 9781119664635
Author: Solomons
Publisher: WILEY
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Chapter 5, Problem 51P
(Use models co solve this problem.) Write conformational structures for all of the stereoisomers of 1,3-diethylcyclohexane. Label pairs of enantiomers and meso compounds if they exist.
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The energy difference between a tert-butyl group going from equatorial to axial in a cyclohexane is 18.3 kJ/mol. When two of the carbon atoms are replaced with oxygen atoms (molecule B) the energy difference between the two chair conformations drops to 5.9 kJ/mol. Explain this difference. (Hint: Consider what makes putting groups axial unfavorable).
It is easy to imagine a cyclohexane as a flat hexagon and a lot of the time we draw it
that way. Looking at 1,3,5-triethylcyclohexane we cannot tell the stability of the
molecule from looking at the flat 2D drawing. Explain why we need to look at the 3D
configuration and what conformation (axial,equatorial) would each of the three ethyl
groups be in for the most stable configuration.
I don't understand why the first one and second one are cis and trans respectively. Wouldn't the first one be trans-1,2-dimethylcyclobutane because the torsional strain wouldn't allow the carbons to be in the same conformation. Meaning one of the carbons would be up and then the next would be down and so on. Since both methyl groups are equatorial and the first and second carbons are arranged up and down, wouldn't it be trans. Same logic for the second molecule. Carbon 1, which is attached to the methyl is down, carbon 3 which is attached to the methyl should be down also because of torsional strain, and since both methyl are in axial (or equatorial?), it would be cis. Or is it based off of the way the carbons are positioned in the picture?
Chapter 5 Solutions
ORGANIC CHEMISTRY (LL) W/WILEYPLUS NEXT
Ch. 5 - Prob. 1PPCh. 5 - Prob. 2PPCh. 5 - Prob. 3PPCh. 5 - Prob. 4PPCh. 5 - Prob. 5PPCh. 5 - Prob. 6PPCh. 5 - Prob. 7PPCh. 5 - Practice Problem 5.8 Write three-dimensional...Ch. 5 - Prob. 9PPCh. 5 - Prob. 10PP
Ch. 5 - Practice Problem 5.11 List the substituents in...Ch. 5 - Prob. 12PPCh. 5 - Practice Problem 5.13 Tell whether the two...Ch. 5 - Prob. 14PPCh. 5 - Prob. 15PPCh. 5 - Prob. 16PPCh. 5 - Prob. 17PPCh. 5 - Prob. 18PPCh. 5 - Prob. 19PPCh. 5 - Prob. 20PPCh. 5 - Practice Problem 5.21 The following are formulas...Ch. 5 - Practice Problem 5.22 Write three-dimensional...Ch. 5 - Prob. 23PPCh. 5 - Practice Problem 5.24 Give names chat include (R)...Ch. 5 - Prob. 25PPCh. 5 - Prob. 26PPCh. 5 - Prob. 27PPCh. 5 - Prob. 28PPCh. 5 - Practice Problem 5.29 Write formulas for all of...Ch. 5 - Prob. 30PPCh. 5 - Prob. 31PPCh. 5 - Prob. 32PPCh. 5 - Prob. 33PCh. 5 - Prob. 34PCh. 5 - 5.35 Designate the (R) or (S) configuration at...Ch. 5 - Prob. 36PCh. 5 - (a) Write the structure of...Ch. 5 - Shown below are Newman projection formulas for...Ch. 5 - 5.39 Write appropriate structural formulas...Ch. 5 - Discuss whether each of the following compounds...Ch. 5 - Prob. 42PCh. 5 - Prob. 43PCh. 5 - Compound F has the molecular formula C5H8 and is...Ch. 5 - Prob. 45PCh. 5 - Prob. 46PCh. 5 - Prob. 47PCh. 5 - For the following molecule, draw its enantiomer as...Ch. 5 - 5.49 (Use models to solve this...Ch. 5 - 5.50 (Use models to solve this...Ch. 5 - (Use models co solve this problem.) Write...Ch. 5 - 5.52 Tartaric acid was an important compound in...Ch. 5 - Prob. 53PCh. 5 - Prob. 54PCh. 5 - Prob. 55PCh. 5 - Prob. 1LGPCh. 5 - Prob. 2LGPCh. 5 - Prob. 3LGP
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Chapter 4 Alkanes and Cycloalkanes Lesson 2; Author: Linda Hanson;https://www.youtube.com/watch?v=AL_CM_Btef4;License: Standard YouTube License, CC-BY
Chapter 4 Alkanes and Cycloalkanes Lesson 1; Author: Linda Hanson;https://www.youtube.com/watch?v=PPIa6EHJMJw;License: Standard Youtube License