Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 3.SE, Problem 52AP
Increased substitution around a bond leads to increased strain. Take the four substituted butanes listed below, for example. For each compound, sight along the C2-C3 bond and draw Newman projections of the most stable and least stable conformations. Use the data in Table 3-5 to assign strain-energy values to each conformation. Which of the eight conformations is most strained? Which is least strained?
(a) 2-Methylbutane
(b) 2,2-Dimethylbutane
(c) 2,3-Dimethylbutane
(d) 2,2,3-Trimethylbutane
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Chapter 3 Solutions
Organic Chemistry
Ch. 3.1 - Prob. 1PCh. 3.1 - Prob. 2PCh. 3.1 - Identify the functional groups in the following...Ch. 3.2 - Draw structures of the five isomers of C6H14.Ch. 3.2 - Propose structures that meet the following...Ch. 3.2 - Prob. 6PCh. 3.3 - Draw the eight 5-carbon alkyl groups (pentyl...Ch. 3.3 - Identify the carbon atoms in the following...Ch. 3.3 - Prob. 9PCh. 3.3 - Prob. 10P
Ch. 3.4 - Give IUPAC names for the following compounds:Ch. 3.4 - Prob. 12PCh. 3.4 - Name the eight 5-carbon alkyl groups you drew in...Ch. 3.4 - Give the IUPAC name for the following hydrocarbon,...Ch. 3.7 - Make a graph of potential energy versus angle of...Ch. 3.7 - Sight along the C2-C1 bond of 2-methylpropane...Ch. 3.7 - Sight along the C2-C3 bond of 2,3-dimethylbutane,...Ch. 3.7 - Draw a Newman projection along the C2-C3 bond of...Ch. 3.SE - Prob. 19VCCh. 3.SE - Prob. 20VCCh. 3.SE - Draw a Newman projection along the C2-C3 bond of...Ch. 3.SE - Prob. 22APCh. 3.SE - Prob. 23APCh. 3.SE - Propose structures for the following: (a) A...Ch. 3.SE - Prob. 25APCh. 3.SE - Draw the structures of the following molecules:...Ch. 3.SE - Draw structures that meet the following...Ch. 3.SE - Prob. 28APCh. 3.SE - In each of the following sets, which structures...Ch. 3.SE - There are seven constitutional isomers with the...Ch. 3.SE - Prob. 31APCh. 3.SE - Draw compounds that contain the following: (a) A...Ch. 3.SE - Prob. 33APCh. 3.SE - Draw and name all monochloro derivatives of...Ch. 3.SE - Draw structures for the following: (a)...Ch. 3.SE - Prob. 36APCh. 3.SE - Draw a compound that: (a) Has nine primary...Ch. 3.SE - Give IUPAC names for the following compounds:Ch. 3.SE - Name the five isomers of C6H14.Ch. 3.SE - Explain why each of the following names is...Ch. 3.SE - Prob. 41APCh. 3.SE - Consider 2-methylbutane (isopentane). Sighting...Ch. 3.SE - What are the relative energies of the three...Ch. 3.SE - Construct a qualitative potential-energy diagram...Ch. 3.SE - Prob. 45APCh. 3.SE - Draw the most stable conformation of pentane,...Ch. 3.SE - Draw the most stable conformation of...Ch. 3.SE - Prob. 48APCh. 3.SE - Prob. 49APCh. 3.SE - Formaldehyde, H2C=O, is known to all biologists...Ch. 3.SE - Prob. 51APCh. 3.SE - Increased substitution around a bond leads to...Ch. 3.SE - Prob. 53APCh. 3.SE - In the next chapter we'll look at...Ch. 3.SE - We’ll see in the next chapter that there are two...
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- From the data in Figure 4-12 and Table 4-1, estimate the percentages of molecules that have their substituents in an axial orientation for the following compounds: (a) Isopropylcyclohexane (b) Fluorocyclohexane (c) Cyclohexanecarbonitrile, C6H11CNarrow_forwarda. For each disubstituted cyclohexane below, draw its ring-flip isomer. Circle the most stable conformation and label the substituent groups as axial or equatorial. ( see image) b.Draw and name the seven constitutional isomers (all contain a ring of some size) for cycloalkane, C6H12.arrow_forwardWrite a conformational structure for 1,2,3-trimethylcyclohexane in which all the methyl groups are axial and then show its more stable conformation.arrow_forward
- Draw the most stable conformation of pentane, using wedges and dashes to represent bonds coming out of the paper and going behind the paper, respectively.arrow_forwardLook at Figure 4-12 on page 105, and estimate the percentages of axial and equatorial conformations present at equilibrium in bromocyclohexane.arrow_forwardConsider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This group is called an ethyl group and can be considered a sphere about twice the sizeof a methyl group. Draw the following Newman projections sighting down the C1C2 bond... a. The lowest potential energy conformation. b. The highest potential energy staggered conformation.arrow_forward
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