Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
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Textbook Question
Chapter 4, Problem 37P
Write the structures of two chair conformations of 1-tert-butyl-1-methylcyclohexane. Which conformation is more stable? Explain your answer.
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Write the structures of two chair conformations of 1-tert-butyl-1-methylcyclohexane. Which conformation is more stable?
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between axial and equatorial conformations is only 1.7 kJ (0.41 kcal)/mol. Compare the
conformational equilibrium for methylcyclohexane with that for ethynylcyclohexane and
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Chapter 4 Solutions
Organic Chemistry
Ch. 4 - Prob. 1PPCh. 4 - Which structure does not represent...Ch. 4 - Prob. 3PPCh. 4 - Draw bond-line formulas for all of the isomers of...Ch. 4 - Prob. 5PPCh. 4 - Draw bond-line formulas and give IUPAC...Ch. 4 - Draw bond-line formulas and give IUPAC...Ch. 4 - Practice Problem 4.8 Give names for the following...Ch. 4 - Prob. 9PPCh. 4 - Prob. 10PP
Ch. 4 - Prob. 11PPCh. 4 - Give the structures and IUPAC names for all the...Ch. 4 - Prob. 13PPCh. 4 - Practice Problem 4.14 Show by a calculation (using...Ch. 4 - Practice Problem 4.15 Write structures for the cis...Ch. 4 - Practice Problem 4.16
(a) Write structural...Ch. 4 - Practice Problem 4.17 Write a conformational...Ch. 4 - Practice Problem 4.18
(a) Write the two...Ch. 4 - Prob. 19PPCh. 4 - Practice Problem 4.20 (a) What is the index of...Ch. 4 - Practice Problem 4.21
Zingiberene, a fragrant...Ch. 4 - Practice Problem 4.22 Carbonyl groups also count...Ch. 4 - Prob. 23PCh. 4 - Give systematic IUPAC names for each of the...Ch. 4 - Prob. 25PCh. 4 - Write the structure and give the IUPAC systema.tic...Ch. 4 - 4.27. Write the structure(s) of the simplest...Ch. 4 - Prob. 28PCh. 4 - 4.29. Write structures for the following...Ch. 4 - Prob. 30PCh. 4 - A spiro ring junction is one where two rings that...Ch. 4 - 4.32. Tell what is meant by a homologous series...Ch. 4 - Four different cycloalkenes will all yield...Ch. 4 - 4.34. (a) Three different alkenes yield...Ch. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - 4.37. Write the structures of two chair...Ch. 4 - Prob. 38PCh. 4 - Without referring to tables, decide which member...Ch. 4 - Prob. 40PCh. 4 - 4.41. Which compound would you expect to be the...Ch. 4 - Prob. 42PCh. 4 - 4.43. Write the two chair conformations of each of...Ch. 4 - Provide an explanation for the surprising fact...Ch. 4 - Prob. 45PCh. 4 - 4.46. Specify the missing compounds and/or...Ch. 4 - Consider the cis and trans isomers of...Ch. 4 - Prob. 48PCh. 4 - Open the energy-minimized 3D Molecular Models on...Ch. 4 - 4.50. Open the 3D Molecular Models on the book’s...Ch. 4 - 4.51. Open the 3D Molecular Model on the book’s...Ch. 4 - 1. The predominant conformation for D-glucose is...Ch. 4 - Prob. 2LGPCh. 4 - When 1,2-dimethylcyclohexene is allowed to react...Ch. 4 - Prob. 4LGP
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- Write a conformational structure for 1,2,3-trimethylcyclohexane in which all the methyl groups are axial and then show its more stable conformation.arrow_forwardsketch the various conformational isomers of 1,3-dimethylcyclohexane. Indicate the position (axial/equatorial) of each of the methyl groups in each structure.arrow_forwardDraw structural formulas for the cis and trans isomers of hydrindane. Show each ring in its most stable conformation. Which of these isomers is more stable?arrow_forward
- Draw all the possible conformations of trans- and cis-1,3-dimethylcyclobutane. Which of these conformations is the most stable conformation? Explain your answer. Discuss the type of strain(s) that affect the stability of these compounds.arrow_forwardViewed through the C-3 — C-4 bond, which is the most stable conformation of 3-bromo-2-methylpentane?arrow_forwardConstruct the chair structures with the molecular models for trans-1-ethyl-3-methylcyclohexane. Find the energy of each conformer, the equilibrium constant Keq, and the percentage of each conformer at 25oC. Indicate which conformer is more stable.arrow_forward
- From studies of the dipole moment of 1,2-dichloroethane in the gas phase at room temperature (25°C), it is estimated that the ratio of molecules in the anti conformation to gauche conformation is 7.6 to 1. Calculate the difference in Gibbs free energy between these two conformations.arrow_forwardHow to draw the more stable conformer of trans-1-ethyl-2-methylcyclohexane? Thank you.arrow_forwardWhy is a substituted cyclohexane ring more stable with a larger group in the equatorial position?arrow_forward
- 6) Draw the energetically favored (more stable) chair conformer of the following cyclohexane. H3C OH 110arrow_forward4. Which structure below represents the most stable conformation of cis-1-t-butyl-4-methylcyclohexane? A B D 5. The planar form of which ring would have bond angles close to the tetrahedral value, but is destabilized by eclipsing interactions (torsional strain)? Which of the following statements about conformations is FALSE? A) Conformations can be isolated and separated at room temperature B) Conformations are interconverted by rotation about o-bonds C) For butane the staggered anti conformation is the most stable D) For ethane the eclipsed conformation is the least stable 6. 7. Which of the following compounds has two chirality centers? .H H. H3Carrow_forwardWrite structural formulas for all ketones with the molecular formula C6H12O and give each its IUPAC name. Which of these ketones are chiral?arrow_forward
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