Organic Chemistry
11th Edition
ISBN: 9781118133576
Author: T. W. Graham Solomons, Craig Fryhle
Publisher: Wiley, John & Sons, Incorporated
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 10, Problem 12PP
Practice Problem 10.12
Benzylic radicals, due to the adjacent benzene ring, have even greater possibility for delocalization than allylic radicals. Draw contributing resonance structures that show this delocalization for the benzylic radical derived from methyl benzene. (Hint: There are four contributing resonance structures for this benzylic radical.)
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Both bicyclo[3.3.1]nonane and bicyclo[2.2.1]heptane are saturated hydrocarbons composed of only 2° and 3° carbons.
Recall that radical substitution generally takes place preferentially at a 3° carbon. Indeed, when bicyclo[3.3.1]nonane is
treated with bromotrichloromethane under irradiation, substitution takes place 100% at the 3° carbon. Under the same
conditions, however, no substitution is observed at the 3° carbon in bicyclo[2.2.1]heptane. Explain. Hint: Build molecular
models of each of these compounds.
BrCCl.
hv
hv
Br
Br
Bicyclo[3.3.1]nonane
100%
Bicyclo[2.2.1]heptane
0%
Following is an example of a type of reaction known as a Diels-Alder reaction
1,3-Pentadiene
Ethylene
3-Methylcyclohexene
(a racemic mixture)
The Diels-Alder reaction between a diene and an alkene is quite remarkable in that it is
one of the few ways that chemists have to form two new carbon-carbon bonds in a single
reaction. Given what you know about the relative strengths of carbon-carbon sigma and
pi bonds, would you predict the Diels-Alder reaction to be exothermic or endothermic?
Explain your reasoning.
3) In the mid-1930s, the German theoretical chemist Erich Hückel developed a rule that dealt with the aromaticity of various compounds, which became known as the Hückel Rule. Which (parts) of the compounds listed below are aromatic? Justify your answer based on Hückel's rule. You can treat the rings separately or together as you wish.image iv: colchicine: a highly poisonous alkaloid,obtained from autumn turmeric and used to treat gout.
Chapter 10 Solutions
Organic Chemistry
Ch. 10 - Prob. 1PPCh. 10 - Prob. 2PPCh. 10 - Practice Problem 10.3 How would the molecular ion...Ch. 10 - Prob. 4PPCh. 10 - Prob. 5PPCh. 10 - Prob. 6PPCh. 10 - Practice Problem 10.7 Chlorination reactions of...Ch. 10 - Prob. 8PPCh. 10 - Prob. 9PPCh. 10 - Prob. 10PP
Ch. 10 - Prob. 11PPCh. 10 - Practice Problem 10.12 Benzylic radicals, due to...Ch. 10 - Prob. 13PPCh. 10 - Practice Problem 10.14 Show how the following...Ch. 10 - Prob. 15PPCh. 10 - Prob. 16PPCh. 10 - Prob. 17PPCh. 10 - Prob. 18PCh. 10 - Explain the relative distribution of produces...Ch. 10 - 10.20 Which of the following compounds can be...Ch. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - 10.25 List in order of decreasing stability all of...Ch. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Starting with the compound or compounds indicated...Ch. 10 - Prob. 30PCh. 10 - 10.31 Synthesize each of the following compounds...Ch. 10 - 10.32 Synthesize each of the following compounds...Ch. 10 - Prob. 33PCh. 10 - Prob. 34PCh. 10 - Prob. 35PCh. 10 - Write a mechanism for the following reaction.Ch. 10 - Prob. 37PCh. 10 - The halogen atom of an alkyl halide can be...Ch. 10 - Prob. 39PCh. 10 - Prob. 40PCh. 10 - If one were to try to draw the simplest Lewis...Ch. 10 - Prob. 1LGPCh. 10 - 2. (a) Propose a synthesis of 2-methoxypropene...Ch. 10 - Use the single-bond dissociation energies of Table...Ch. 10 - 10.2 In the radical chlorination of methane, one...Ch. 10 - Prob. 3QCh. 10 - Use the single-bond dissociation energies of Table...Ch. 10 - Prob. 5QCh. 10 - Prob. 6Q
Additional Science Textbook Solutions
Find more solutions based on key concepts
4. 38 Strontium has four naturally occurring isotopes, with mass numbers 84, 86, 87, arid 88.
a. Write the atom...
General, Organic, and Biological Chemistry: Structures of Life (5th Edition)
a. Draw all the isomers with molecular formula C6H12 that contain a cyclobutane ring. (Hint: There are seven.) ...
Organic Chemistry (8th Edition)
Define freezing point.
The Organic Chem Lab Survival Manual: A Student's Guide to Techniques
In the following diagram, the white spheres represent hydrogen atoms and the blue Sphere represent the nitrogen...
Chemistry: The Central Science (14th Edition)
9.1 Calculate the total mass of the reactants and the products for each of the following equations:
Basic Chemistry (5th Edition)
Why are empirical formulas always used for ionic compounds?
Chemistry: The Molecular Nature of Matter
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- help me with thisarrow_forward(c) A series of dialkyl ethers react with excess hydrogen bromide, with the following results. Analyze the ether in each case and write out the complete chemical equations. (1) Ether gives a mixture of bromocyclopentane and 1-bromoethane. (ii) Another ether gives one mole of 1,5-dibromopentane per mole of ether.arrow_forwardPlease help me answer this organic chemistry question. Explanations are welcome.arrow_forward
- Account for the fact that among the chlorinated derivatives of methane, chloromethane has the largest dipole moment and tetrachloromethane has the smallest dipole moment.arrow_forwardJj.128.arrow_forward• PRACTICE PROBLEM 8.12 Treating a hindered alkene such as 2-methyl-2-butene with BH3:THE leads to the for- mation of a dialkylborane instead of a trialkylborane. When 2 mol of 2-methyl-2-butene is added to 1 mol of BH3, the product formed is bis(3-methyl-2-butyl)borane, nicknamed in reagent "disiamylborane." Write its structure. Bis(3-methyl-2-butyl)borane is a useful certain syntheses that require a sterically hindered borane. (The name “disiamyl" comes from "disecondary-iso-amyl," a completely unsystematic and unacceptable name. The name "amyl" is an old common name for a five-carbon alkyl group.) donbyarrow_forward
- 1. Calculate the degree of unsaturation for the following compounds. Suggest at least TWO possible structures consistent with the degree of unsaturation for each compound. Note that the structures proposed must follow the usual molecular bonding rules (e.g., C cannot have more than 4 bonds, O cannot have more than 2 bonds, etc.). Hint: A nitro group, -NO2, has one degree of unsaturation. This information does not matter when you are calculating the degree of unsaturation, but it might matter when you start drawing structures. a. C7H14O2 b. C4H100 c. C9H100 d. C3H9NO3 e. C4H6O2 f. C;H10CI2arrow_forwardCyclooctatetraene (8-annulene) is non-aromatic because all four pi bonds are not found in the same plane in its lowest energy conformation. If this compound is reduced by two electrons to generate the dianion, it exhibits aromatic characteristics. Draw the pi MO diagram for these compounds if they are planar, and fill in the electrons. Based on that picture explain the difference in their aromaticity.arrow_forwardPractice Problem 13.37c Draw the major organic product of the following reaction sequence. 1) RCO3H 2) NaSMe 3) H20arrow_forward
- Illustrate the resonance effect of the methoxy group -OCH3, on the structure of the benzene ring. Draw all the oissuvke resonance forms of methoxybenzene, including the hybrid Based on the structures, explain how the presence of the -OCH3 group affects: (i) the reactivity of the benzene ring towards electrophilic attack (ii) the orientation or point of attack of an incoming electrophilic reagent on the benzene ring.arrow_forward(iii) State whether you think each of the molecules A to D below is aromatic, anti-aromatic, or non- aromatic. Note that only one resonance form of each compound is drawn. Give your reasoning in each case. NH A в D (iv) Sketch an energy profile for a typical electrophilic aromatic substitution reaction of benzene with an electrophile E*, showing the structures of the reactants, the intermediate and the products.arrow_forwardPRACTICE PROBLEM 8.20 Specify the alkene and reagents needed to synthesize each of the following diols. OH HO- (a) (b) (c) HO. н он HO (racemic) (racemic)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
Characteristic Reactions of Benzene and Phenols; Author: Linda Hanson;https://www.youtube.com/watch?v=tjEqEjDd87E;License: Standard YouTube License, CC-BY
An Overview of Aldehydes and Ketones: Crash Course Organic Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=-fBPX-4kFlw;License: Standard Youtube License