ORGANIC CHEMISTRY-W/ACCESS >CUSTOM<
5th Edition
ISBN: 9781260014112
Author: SMITH
Publisher: MCG CUSTOM
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Chapter 14, Problem 14.47P
Interpretation Introduction
Interpretation: An explanation corresponding to the fact that the carbonyl carbon of an
Concept introduction: Depending upon the electron density or the concentration of electron around carbon, the chemical shift values of carbon varies relative to the reference signal. The terms, upfield and downfield expresses the relative location of signals. The meaning of upfield is to the right and of downfield is to the left.
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Chapter 14 Solutions
ORGANIC CHEMISTRY-W/ACCESS >CUSTOM<
Ch. 14 - Problem 14.1 The NMR spectrum of recorded on a ...Ch. 14 - Prob. 14.2PCh. 14 - How many NMR signals does each compound show?
a....Ch. 14 - How many 1H NMR signals does each...Ch. 14 - How many 1H NMR signals does each compound give?...Ch. 14 - Label the protons in each highlighted CH2 group as...Ch. 14 - How many 1H NMR signals would you expect for each...Ch. 14 - Prob. 14.8PCh. 14 - For each compound, first label each different type...Ch. 14 - Label each statement as True or False. a. When a...
Ch. 14 - Prob. 14.11PCh. 14 - Problem 14.12 Which compound give a NMR spectrum...Ch. 14 - Prob. 14.13PCh. 14 - Prob. 14.14PCh. 14 - For each compound give the number of 1H NMR...Ch. 14 - Prob. 14.16PCh. 14 - Prob. 14.17PCh. 14 - Problem 14.18 Describe the NMR spectrum of each...Ch. 14 - Problem 14.19 Draw a splitting diagram for in ,...Ch. 14 - Problem 14.20 Identify A and B, isomers of...Ch. 14 - Problem 14.21 How many signals are present in the ...Ch. 14 - Problem 14.22 What protons in alcohol A give rise...Ch. 14 - How many peaks are observed in the NMR signal for...Ch. 14 -
Problem 14.24 Propose a structure for a compound...Ch. 14 - Problem 14.25 Propose a structure for a compound...Ch. 14 - Problem 14.26. Identify products A and B from the...Ch. 14 - Problem 14.27 How many lines are observed in the ...Ch. 14 - Problem 14.28 Draw all constitutional isomers of...Ch. 14 - Problem 14.29 Esters of chrysanthemic acid are...Ch. 14 - Prob. 14.30PCh. 14 - Problem 14.31 Identify the carbon atoms that give...Ch. 14 - Problem 14.32 A compound of molecular formula ...Ch. 14 - Problem 14.33 Draw the structure of a compound of...Ch. 14 - 14.34 (a) How many NMR signals does each of the...Ch. 14 - 14.35 (a) How many NMR signals does each compound...Ch. 14 - Prob. 14.36PCh. 14 - 14.37 How many NMR signals does each natural...Ch. 14 - Prob. 14.38PCh. 14 - 14.39 What effect does increasing the operating...Ch. 14 - Prob. 14.40PCh. 14 - 14.41 How could you use chemical shift and...Ch. 14 - Prob. 14.42PCh. 14 - 14.43 How can you use NMR spectroscopy to...Ch. 14 - Prob. 14.44PCh. 14 - Prob. 14.45PCh. 14 - Prob. 14.46PCh. 14 - Prob. 14.47PCh. 14 - 14.48 How many NMR signals does each compound...Ch. 14 - 14.49 Rank the highlighted carbon atoms in each...Ch. 14 - 14.50 Identify the carbon atoms that give rise to...Ch. 14 - 14.51 a. How many signals does dimethyl...Ch. 14 - 14.52 Answer the following questions about each of...Ch. 14 - 14.53 Propose a structure consistent with each set...Ch. 14 - 14.54 Identify the structures of isomers A and B...Ch. 14 - 14.55 Reaction of with affords compound W,...Ch. 14 - 14.56 Treatment of with , followed by aqueous
...Ch. 14 - 14.57 Compound C has a molecular ion in its mass...Ch. 14 - 14.58 As we will learn in Chapter 20, reaction of ...Ch. 14 - 14.59 Identify the structures of isomers E and F...Ch. 14 - 14.59 Identify the structures of isomers H and I...Ch. 14 - 14.61 Propose a structure consistent with each set...Ch. 14 - 14.62 Reaction of with , followed by treatment...Ch. 14 - Reaction of aldehyde D with amino alcohol E in the...Ch. 14 - 14.64 Propose a structure consistent with each set...Ch. 14 - 14.65 In the presence of a small amount of acid, a...Ch. 14 - 14.66 Treatment of with affords two products (M...Ch. 14 - 14.67 Compound O has molecular formula and shows...Ch. 14 - 14.68 Compound P has molecular formula . Deduce...Ch. 14 - 14.69 Treatment of with strong base followed by ...Ch. 14 - 14.70 When -bromo--dimethylbutane is treated with...Ch. 14 - 14.71 Propose a structure consistent with each set...Ch. 14 - 14.72 Reaction of unknown A with forms...Ch. 14 - Prob. 14.73PCh. 14 - 14.74 -Annulene shows two signals in its ...Ch. 14 - 14.75 Explain why the spectrum of-methylbutan--ol...Ch. 14 - 14.76 Because has an odd mass number, nuclei...Ch. 14 - 14.77 Cyclohex--enone has two protons on its...
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- Assign the peaks in the 1H NMR spectrum of eugenol (Fig. 6.23) to specific protons in the molecule. The OH peak is at 5.1 ppm.arrow_forwardThe 1H NMR spectrum of bullvalene at 100 C consists only of a single peak at 4.22 . Explain.arrow_forwardMatch each of the 1H NMR spectra with one of the following compounds:arrow_forward
- Which carbons will be the most "downfield" in a 13C NMR spectrum?arrow_forwardExplain why the β carbon of an α,β-unsaturated carbonyl compound absorbs farther downfield in the 13 C NMR spectrum than the α carbon, even though the α carbon is closer to the electron-withdrawing carbonyl group. For example, the β carbon of mesityl oxide absorbs at 150.5 ppm, while the α carbon absorbs at 122.5 ppm.arrow_forwardLook at NMR and answer #2,3 and 4arrow_forward
- Answer the chart using H NMR spectrumarrow_forwardExplain why the β carbon of an α,β-unsaturated carbonyl compound absorbs farther downfield in the 13C NMR spectrum than the α carbon, even though the α carbon is closer to the electron-withdrawing carbonyl group. For example, the β carbon of mesityl oxide absorbs at 150.5 ppm, whereas the α carbon absorbs at 122.5 ppm.arrow_forwardDraw the structure of ethonic acid, then circle the protons on the structures and correlate the 1H's to the resonances (peaks) on the 1H NMR spectra.arrow_forward
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