Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
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Chapter 19, Problem 6PP
Interpretation Introduction
Interpretation: Using starting material as ester,
Concept introduction:
If one ester component contains no alpha hydrogen than there arepossibilities of crossed Claisen condensation.
Dieckmann condensation are also known as intermolecular Claisen condensationsthatareuseful for the synthesis of five or six membered ring.
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Practice Problem 19.54
Z Your answer is partially correct. Try again.
Predict the major product(s) (A - K) from the treatment of acetone with the following compounds (a-c):
NH2
HO
Eto
OEt
A:
B:
C:
D:
E:
F:
OH
OH
но
CN
G:
H:
I:
J:
(a) [H*], excess EtOH, (-H20)
Major Product(s):
(ь) NaBH4, Meон
B
Major Product(s):
(c) LAH followed by H20
Major Product(s):
SHOW HINT
Rank the compounds in each of the following groups in order of their reactivity to electrophilic substitution:
(a) Nitrobenzene, phenol, toluene, benzene
(b) Phenol, benzene, chlorobenzene, benzoic acid
(c) Benzene, bromobenzene, benzaldehyde, aniline
24.82 When the compound shown here is heated, ethene gas
is evolved and a product with the formula C14H3O2 is
formed. The 'H NMR and 13C NMR spectra of C14H8O2
are shown below. (There are two signals >150 ppm in
the 13C NMR spectrum. Recall that the 13C NMR signal
at 77 ppm is from the CDCI3 solvent.)
(a) Draw the structure of C,14H3O2.
(b) Draw the mechanism that accounts for its formation.
(c) What is the main driving force that favors the products of this reaction?
? C14H3O2
C14H8O2
9.
8
7
6
4
3
2
1
250
200
150
100
50
Chemical shift (ppm)
Chemical shift (ppm)
Chapter 19 Solutions
Organic Chemistry
Ch. 19 - PRACTICE PROBLEM 19.1 (a) Write a mechanism. for...Ch. 19 - Practice Problem 19.2
Since the products obtained...Ch. 19 - Prob. 3PPCh. 19 - PRACTICE PROBLEM 19.4
Write mechanisms that...Ch. 19 - Prob. 5PPCh. 19 - Prob. 6PPCh. 19 - Practice Problem 19.7 The acid-catalyzed aldol...Ch. 19 - Prob. 8PPCh. 19 - Practice Problem 19.9
(a) Provide a mechanism for...Ch. 19 - Prob. 10PP
Ch. 19 - Practice Problem 19.11 Outlined below is a...Ch. 19 - Prob. 12PPCh. 19 - Prob. 13PPCh. 19 - Prob. 14PPCh. 19 - Practice Problem 19.15
Starting with ketones and...Ch. 19 - Practice Problem 19.16 Assuming that dehydration...Ch. 19 - Practice Problem 19.17 What starting compound...Ch. 19 - Practice Problem 19.18
What experimental...Ch. 19 - Prob. 19PPCh. 19 - Practice Problem 19.20
When acrolein (propenal)...Ch. 19 - Prob. 21PPCh. 19 - PRACTICE PROBLEM 19.22
Qutline reasonable...Ch. 19 - Prob. 23PCh. 19 - Show all steps in the following syntheses. You may...Ch. 19 - Prob. 25PCh. 19 - Prob. 26PCh. 19 - Prob. 27PCh. 19 - 19.28 Show how the diketone at the right could be...Ch. 19 - Prob. 29PCh. 19 - 19.30 Write a detailed mechanism for the following...Ch. 19 - Prob. 31PCh. 19 - Prob. 32PCh. 19 - 19.33 Predict the products from each of the...Ch. 19 - Prob. 34PCh. 19 - Show how each of the following transformations...Ch. 19 - Prob. 36PCh. 19 - What reagents would you use to bring about each...Ch. 19 - Prob. 38PCh. 19 - Prob. 39PCh. 19 - 19.40 When the aldol reaction of acetaldehyde is...Ch. 19 - Prob. 41PCh. 19 - Prob. 42PCh. 19 - 19.43 The following reaction illustrates the...Ch. 19 - What is the structure of the cyclic compound that...Ch. 19 - Prob. 45PCh. 19 - Prob. 46PCh. 19 - Prob. 47PCh. 19 - Predict the products from the following reactions....Ch. 19 - Prob. 49PCh. 19 - Prob. 50PCh. 19 - Prob. 51PCh. 19 - Prob. 52PCh. 19 - Prob. 53PCh. 19 - The Perkin condensation is an aldol-type...Ch. 19 - 19.55 (a) Infrared spectroscopy provides an easy...Ch. 19 - Allowing acetone to react with 2 molar equivalents...Ch. 19 - (+) Fenchone is a terpenoid that can be isolated...Ch. 19 - Prob. 58PCh. 19 - Prob. 59PCh. 19 - 19.60 Develop a synthesis for the following...Ch. 19 - 19.61 Provide a mechanism for each of the...Ch. 19 - 19.62 (a) Deduce the structure of product A,...Ch. 19 - Prob. 63PCh. 19 - Prob. 1LGP
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