ORGANIC CHEMISTRY-NEXTGEN+BOX (2 SEM.)
4th Edition
ISBN: 9781119761068
Author: Klein
Publisher: WILEY
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Question
Chapter 3.3, Problem 3.23P
Interpretation Introduction
Interpretation:
The number of protons giving rise to each signal in the spectrum of a compound with molecular formula
Concept Introduction:
Integration is one of the characteristics of proton NMR spectrum which is the area under each signal. After acquiring a spectrum, a computer calculates the area under each signal, and then displays this area as a numerical value placed under the signal which is relative only.
In order to convert the integration values into useful information, a smallest number should be chosen and then all integration values should be divided by this number. If the numerical values are not whole numbers, then in order to arrive at whole numbers all the numbers should be multiplied by a suitable integer.
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Rank each of the following substituted benzene molecules in order of which will react fastest (1) to slowest (4) by electrophilic
aromatic substitution.
Explanation
Check
CF3
(Choose one)
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H
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Identifying electron-donating and electron-withdrawing effects
For each of the substituted benzene molecules below, determine the inductive and resonance effects the substituent will have on the
benzene ring, as well as the overall electron-density of the ring compared to unsubstituted benzene.
Molecule
Inductive Effects
Resonance Effects
Overall Electron-Density
CF3
O donating
O donating
O electron-rich
O withdrawing
withdrawing
O no inductive effects
O no resonance effects
O electron-deficient
O similar to benzene
OCH3
Explanation
Check
O donating
O donating
○ withdrawing
withdrawing
O no inductive effects
no resonance effects
electron-rich
electron-deficient
O similar to benzene
Х
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Chapter 3 Solutions
ORGANIC CHEMISTRY-NEXTGEN+BOX (2 SEM.)
Ch. 3.1 - Prob. 3.2PCh. 3.1 - Prob. 3.3PCh. 3.1 - Prob. 3.4PCh. 3.1 - Prob. 3.5PCh. 3.1 - Prob. 3.6PCh. 3.1 - Prob. 3.7PCh. 3.1 - Prob. 3.8PCh. 3.1 - Prob. 3.9PCh. 3.1 - Prob. 3.10PCh. 3.1 - If you look at your answers to the previous...
Ch. 3.2 - Predict the chemical shifts for the signals in the...Ch. 3.2 - Predict the chemical shifts for the signals in the...Ch. 3.2 - Predict the chemical shifts for the signals in the...Ch. 3.2 - Predict the chemical shifts for the signals in the...Ch. 3.2 - Predict the chemical shifts for the signals in the...Ch. 3.2 - Predict the chemical shifts for the signals in the...Ch. 3.2 - Prob. 3.19PCh. 3.3 - Prob. 3.21PCh. 3.3 - Prob. 3.22PCh. 3.3 - Prob. 3.23PCh. 3.4 - Predict the multiplicity of each signal in the...Ch. 3.4 - Predict the multiplicity of each signal in the...Ch. 3.4 - Predict the multiplicity of each signal in the...Ch. 3.4 - Predict the multiplicity of each signal in the...Ch. 3.4 - Predict the multiplicity of each signal in the...Ch. 3.4 - Predict the multiplicity of each signal in the...Ch. 3.5 - Below are NMR spectra of several compounds....Ch. 3.5 - Below are NMR spectra of several compounds....Ch. 3.5 - Below are NMR spectra of several compounds....Ch. 3.8 - Calculate the degree of unsaturation for each of...Ch. 3.8 - Calculate the degree of unsaturation for each of...Ch. 3.8 - Calculate the degree of unsaturation for each of...Ch. 3.8 - Calculate the degree of unsaturation for each of...Ch. 3.8 - Calculate the degree of unsaturation for each of...Ch. 3.8 - Calculate the degree of unsaturation for each of...Ch. 3.9 - Prob. 3.43PCh. 3.9 - Propose a structure for a compound with molecular...Ch. 3.9 - Propose a structure for a compound with molecular...Ch. 3.9 - Propose a structure for a compound with molecular...Ch. 3.9 - Propose a structure for a compound with molecular...Ch. 3.9 - Prob. 3.48PCh. 3.10 - For each compound below, predict the number of...Ch. 3.10 - For each compound below, predict the number of...Ch. 3.10 - For each compound below, predict the number of...Ch. 3.10 - For each compound below, predict the number of...Ch. 3.10 - For each compound below, predict the number of...Ch. 3.10 - For each compound below, predict the number of...
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