Organic Chemistry
11th Edition
ISBN: 9781118133576
Author: T. W. Graham Solomons, Craig Fryhle
Publisher: Wiley, John & Sons, Incorporated
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Chapter 15, Problem 38P
2,6-Dichlorophenol has been isolated from the females of two species of ticks (Amblyommaamericanum and A. maculatum), where it apparently serves as a sex attractant. Each female tick yields about 5 ng of 2,6-dichlorophenol. Assume that you need larger quantities than this and outline a synthesis of 2,6-dichlorophenol from phenol.
(Hint:When phenol is sulfonated at 100 °C, the product is chiefly p-ydroxybenzenesulfonic acid.)
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The following questions concern ethyl (2-oxocyclohexane)carboxylate.(a) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)-carboxylate by a Dieckmann cyclization.(b) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)-carboxylate by acylation of a ketone.(c) Write structural formulas for the two most stable enol forms of ethyl (2-oxocyclohexane)carboxylate.(d) Write the three most stable resonance contributors to the most stable enolate derived from ethyl (2-oxocyclohexane)carboxylate.(e) Show how you could use ethyl (2-oxocyclohexane)carboxylate to prepare 2-methylcyclohexanone.(f) Give the structure of the product formed on treatment of ethyl (2-oxocyclohexane)-carboxylate with acrolein (H2C=CHCH=O) in ethanol in the presence of sodium ethoxide
Following are structural formulas for phenol and cyclohexanol along with the acid dis-
sociation constants for each.
OH
НО
Cyclohexanol
pK, 18
Phenol
pK, 9.96
Propose an explanation for the fact that phenol is a considerably stronger acid than
cyclohexanol.
Eugenol is the component responsible for the odor of cloves, which are dried flower buds of the
evergreen tropical tree Eugenia aromatica. The isolation of eugenol from the rest of the constituents of
"oil of cloves" (comprising around 10% of acetyleugenol and caryophyllene) is highly dependent on the
chemically active proton of the phenolic group of eugenol. Draw the structure of the main components
of "oil of cloves" and describe how to isolate or extract eugenol considering its structure.
Chapter 15 Solutions
Organic Chemistry
Ch. 15 - PRACTICE PROBLEM 15.1
Show how loss of a proton...Ch. 15 - Prob. 2PPCh. 15 - PRACTICE PROBLEM 15.3
Outline all steps in a...Ch. 15 - PRACTICE PROBLEM 15.4 Provide a mechanism that...Ch. 15 - Prob. 5PPCh. 15 - PRACTICE PROBLEM
15.6 Explain how the percentages...Ch. 15 - PRACTICE PROBLEM
15.7
Predict the major products...Ch. 15 - Prob. 8PPCh. 15 - Prob. 9PPCh. 15 - Prob. 10PP
Ch. 15 - PRACTICE PROBLEM 15.8 Write resonance structures...Ch. 15 - PRACTICE PROBLEM 15.9
Provide a mechanism for the...Ch. 15 - PRACTICE PROBLEM 15.13
Write mechanisms for the...Ch. 15 - Prob. 14PPCh. 15 - PRACTICE PROBLEM 15.15
Suppose you needed to...Ch. 15 - PRACTICE PROBLEM
15.16 Predict the major product...Ch. 15 - PRACTICE PROBLEM Account for the following...Ch. 15 - PRACTICE PROBLEM 1-Chloro-3-methyl-2-butene...Ch. 15 - Prob. 19PPCh. 15 - PRACTICE PROBLEM
15.20 The following chlorides (Ph...Ch. 15 - Prob. 21PPCh. 15 - Provide a detailed mechanism for each of the...Ch. 15 - 15.34 Provide a detailed mechanism for the...Ch. 15 - Prob. 24PCh. 15 - Many polycyclic aromatic compounds have been...Ch. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Predict the major product (or products) formed...Ch. 15 - Prob. 29PCh. 15 - Prob. 30PCh. 15 - Predict the major products of the following...Ch. 15 - Prob. 32PCh. 15 - Prob. 33PCh. 15 - Prob. 34PCh. 15 - Starting with aniline, outline a synthesis of each...Ch. 15 - Prob. 36PCh. 15 - 15.37 Propose structures for compounds G–I:
Ch. 15 - 2,6-Dichlorophenol has been isolated from the...Ch. 15 - 2-Methylnaphthalene can be synthesized from...Ch. 15 - Show how you might synthesize each of the...Ch. 15 - Prob. 41PCh. 15 - Prob. 42PCh. 15 - 15.47 Provide structures for compounds A and B:
Ch. 15 - Prob. 44PCh. 15 - Prob. 45PCh. 15 - Treating cyclohexene with acetyl chloride and...Ch. 15 - 15.47 The tert-butyl group can be used as a...Ch. 15 - When toluene is sulfonated (concentrated H2SO4) at...Ch. 15 - Prob. 49PCh. 15 - 15.50 Heating 1,1,1-triphenylmethanol with ethanol...Ch. 15 - 15.51
(a) Which of the following halides would you...Ch. 15 - Furan undergoes electrophilic aromatic...Ch. 15 - 15.61 Acetanilide was subjected to the following...Ch. 15 - Prob. 54PCh. 15 - When compound C, which is often used to model a...Ch. 15 - The structure of thyroxine, a thyroid hormone that...Ch. 15 - Prob. 2LGPCh. 15 - 3. Deduce the structures of compounds E–L in the...Ch. 15 - Which of the following compounds would be most...Ch. 15 - 15.2 Which of the following is not a...Ch. 15 - Prob. 3QCh. 15 - Complete the following syntheses.
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