ORGANIC CHEMISTRY
5th Edition
ISBN: 9781259977596
Author: SMITH
Publisher: MCG
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Chapter 14, Problem 14.75P
Explain why the
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3. How many signals would you expect in the 1H and 13C NMR spectrum of each molecule?
H.
ethyl p-anisate
(licorice)
diacetyl
(buttered popcorn)
hexanal
(tutti-fruitti)
1H
13C
1H
13C
1H
13C
a.) Annotate the 1H - NMR spectrum by labeling each signal (A-Z) and assigning them to the correct hydrogens on the structure of your unknown molecule
Annotate the 13C- NMR spectrum by labeling each signal (A-Z) and then assign the A-Z labels to the correct carbons on the structure of your unknown molecule.
How many NMR signals?
-methyl propanoate
-C2H5N
Chapter 14 Solutions
ORGANIC CHEMISTRY
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 as many resonances as you can to specific carbon atoms in the 13C NMR spectrum of ethyl benzoate.arrow_forward1H and 13C NMR spectrum Identify the multiplicity of each signal in the given compound.arrow_forwardHow many signal(s) will appear in the H-NMR spectrum of acetone (structure shown below)? 4 O 1arrow_forward
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- How many signals are expected in the decoupled ¹³C NMR spectrum of ethyl isopropyl ketone?5 CH3-CH-C-CH₂-CH3 CH3arrow_forwardQUESTION 9 Propose a structure for a carboxylic acid with molecular formula C6H10O2 by interpreting the following 13C NMR spectra.arrow_forward10 ppm A compound with the molecular formula CsH Br gives the above H-NMR spectrum. What is the structure of the compound? Br- Br Br Br Brarrow_forward
- Identify the carbon atoms that give rise to the signals in the 13C NMR spectrum of each compound. a.CH3CH2CH2CH2OH; 13C NMR: 14, 19, 35, and 62 ppm b.(CH3)2CHCHO; 13C NMR: 16, 41, and 205 ppm c.CH2=CHCH(OH)CH3; 13C NMR: 23, 69, 113, and 143 ppmarrow_forwardin the 1H-NMR spectra, what is the shift range if the hydrogen?arrow_forwardSelect the compound that gives three signals in the 13C NMR spectrum. O 3-methylhexane O 2,4-dimethylpentane O 2,2-dimethylpentane O 2-methyl-3-ethylbutane heptane here to searcharrow_forward
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