Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
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Chapter 23, Problem 24P
The initial steps of a laboratory synthesis of several prostaglandins reported by E. J. Corey (Section 7.15B) and co-workers in 1968 are outlined here. Supply each of the missing reagents:
(e) The initial step in another prostaglandin synthesis is shown in the following reaction. What kind of reaction—-and catalyst—-is needed here?
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4) Aromatic compounds are among the most abundant and versatile in nature. From a synthetic point of view, these compounds, despite their stabilities, are quite useful and can undergo reactions under special conditions and by specific mechanisms, such as the Electrophilic Aromatic Substitution (SAE) and the Nucleophilic Aromatic Substitution (SNAr). Based on this, please answer the following items:
(b) How would you prepare the following compounds starting from benzene?
Explain the second in a different way
(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane
2. After a brief discussion with each other, Tsomane proposed Method A to
synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that
started from hydroxymethylcyclohexane 3. Each student believed that their
proposed method is better than the other. (Scheme below)
(1)
1
Ph
THF
A
Ph
Ph
B
H₂SO4
100 °C
3
OH
What is the name of the reaction that is followed by reaction Method A?
4) Aromatic compounds are among the most abundant and versatile in nature. From a synthetic point of view, these compounds, despite their stabilities, are quite useful and can undergo reactions under special conditions and by specific mechanisms, such as the Electrophilic Aromatic Substitution (SAE) and the Nucleophilic Aromatic Substitution (SNAr). Based on this, please answer the following items:
(a) What are the possible isomeric products for the following reaction? Which structure, A or B, do you expect to predominate? Justify your choice. Write down the detailed mechanism of formation of compounds A and B. What would be the bromination product of each (compounds C and D)?
Chapter 23 Solutions
Organic Chemistry
Ch. 23 - Prob. 1PPCh. 23 - Prob. 2PPCh. 23 - Prob. 3PPCh. 23 - Prob. 4PPCh. 23 - Prob. 5PPCh. 23 - Prob. 6PPCh. 23 - Prob. 7PPCh. 23 - Prob. 8PPCh. 23 - Prob. 9PPCh. 23 - Prob. 10PP
Ch. 23 - Prob. 11PPCh. 23 - Prob. 12PPCh. 23 - Prob. 13PPCh. 23 - Prob. 14PCh. 23 - 23.15 How would you transform tetradecanal into...Ch. 23 - Prob. 16PCh. 23 - Prob. 17PCh. 23 - When limonene (Section 23.3) is heated strongly,...Ch. 23 - Gadoleic acid (C20H38O2), a fatty acid that can be...Ch. 23 - 23.20 -Phellandrene and -phellandrene are isomeric...Ch. 23 - Prob. 21PCh. 23 - Prob. 22PCh. 23 - Prob. 23PCh. 23 - The initial steps of a laboratory synthesis of...Ch. 23 - Prob. 25PCh. 23 - Prob. 26PCh. 23 - Prob. 27PCh. 23 - 2. The biosynthesis of fatty acids is accomplished...Ch. 23 - Prob. 3LGPCh. 23 - Prob. 4LGP
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