Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN: 9780618974122
Author: Andrei Straumanis
Publisher: Cengage Learning
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Question
Chapter L4, Problem 1CTQ
Interpretation Introduction
Interpretation:
The number of chemically distinct protons in the given molecule should be predicted.
Concept Introduction:
NMR stands for nuclear magnetic resonance. A given compound contains different types of H-signals due to the presence of different magnetic environment within a molecule.
The number of signals obtained by the proton can be determined by spitting rule (n + 1), where n represents the number of the adjacent protons.
Expert Solution & Answer
Answer to Problem 1CTQ
The number of chemically distinct proton in given molecule is 2.
Explanation of Solution
The protons present in the same environment are known as chemically equivalent protons. The number of chemically equivalent protons present in a molecule tells the number of peak obtained in the spectra for given molecule. The NMR spectra of the given molecule is represented as follows:
The triplet in the spectra represents that it has two neighbouring protons which means the triplet is representing protons a. on the other hand, the quartet means it has three neighbouring protons thus, representing the methyl group. As the number of peaks in the spectra is 2, that means two different chemically equivalent protons are present in the given molecule.
Thus, there are two chemically distinct protons in the model .
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A common alkene starting material is shown below. Predict the
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Use a dash or wedge bond to indicate the relative
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H
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OH
H
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1. BH3-THF
1. Hg(OAc)2, H2O
=U=
2. H2O2, NaOH
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Please select a drawing or reagent from the question area
What is the MOHR titration & AOAC method? What is it and how does it work? How can it be used to quantify salt in a sample?
Predict the major products of this reaction.
Cl₂
hv
?
Draw only the major product or products in the drawing area below. If there's more than one major product, you can draw them in any arrangement you like.
Be sure you use wedge and dash bonds if necessary, for example to distinguish between major products with different stereochemistry.
If there will be no products because there will be no significant reaction, just check the box under the drawing area and leave it blank.
Note for advanced students: you can ignore any products of repeated addition.
Explanation
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80
10
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Organic Chemistry: A Guided Inquiry
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