ORGANIC CHEMISTRY LL W/SSM+CONNECT+KIT
5th Edition
ISBN: 9781259971396
Author: SMITH
Publisher: MCG CUSTOM
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Chapter 18, Problem 18.74P
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An unknown compound reacts with ethyl chloride and aluminum trichloride to form a compound that has the following 1H NMR spectrum. What is the structure of the compound?
Show a structure for the compound C6H8 that has the following 13C NMR spectrum and explain how you got the answer.
Explain 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.
Chapter 18 Solutions
ORGANIC CHEMISTRY LL W/SSM+CONNECT+KIT
Ch. 18 - Prob. 18.1PCh. 18 - Prob. 18.2PCh. 18 - Prob. 18.3PCh. 18 - Prob. 18.4PCh. 18 - Prob. 18.5PCh. 18 - Prob. 18.6PCh. 18 - Prob. 18.7PCh. 18 - Prob. 18.8PCh. 18 - Problem 18.9 Draw the product of each reaction
a....Ch. 18 - Prob. 18.10P
Ch. 18 - Prob. 18.11PCh. 18 - Prob. 18.12PCh. 18 - Prob. 18.13PCh. 18 - Problem 18.14 Draw all resonance structures for...Ch. 18 - Problem 18.15 Classify each substituent as...Ch. 18 - Prob. 18.16PCh. 18 - Problem 18.17 Label each compound as more or less...Ch. 18 - Problem 18.18 Rank the following compounds in...Ch. 18 - Prob. 18.19PCh. 18 - Problem 18.20 Draw the products of each...Ch. 18 - Prob. 18.21PCh. 18 - Problem 18.22 Draw the products formed when each...Ch. 18 - Problem 18.23 Devise a synthesis of each compound...Ch. 18 - Problem 18.24 Draw the products of each...Ch. 18 - Problem 18.25 Draw a stepwise mechanism for the...Ch. 18 - Problem 18.26 Draw the products of each...Ch. 18 - Prob. 18.27PCh. 18 - Prob. 18.28PCh. 18 - Problem 18.29 How could you use ethylbenzene to...Ch. 18 - Prob. 18.30PCh. 18 - Problem 18.31 What steps are needed to convert...Ch. 18 - Problem 18.32 Synthesize each compound from...Ch. 18 - Problem 18.33 Synthesize each compound from...Ch. 18 - Prob. 18.34PCh. 18 - 18.35 What is the major product formed by an...Ch. 18 - 18.36 Draw the products formed when phenol is...Ch. 18 - Problem 18.37 Draw the products formed when each...Ch. 18 - 18.38 Draw the products of each reaction.
a. d....Ch. 18 - 18.39 What products are formed when benzene is...Ch. 18 - 18.40 Draw the products of each reaction.
c.
d....Ch. 18 - 18.41 You have learned two ways to make an alkyl...Ch. 18 - 18.42 Draw the structure of A, an intermediate in...Ch. 18 - Prob. 18.43PCh. 18 - Prob. 18.44PCh. 18 - 18.45 Explain why each of the following reactions...Ch. 18 - Prob. 18.46PCh. 18 - 18.47 For each of the following substituted...Ch. 18 - 18.48 Consider the tetracyclic aromatic compound...Ch. 18 - 18.49 For each N-substituted benzene, predict...Ch. 18 - Prob. 18.50PCh. 18 - 18.51 Using resonance structures, explain why a...Ch. 18 - Prob. 18.52PCh. 18 - 18.53 Rank the aryl halides in each group in order...Ch. 18 - 18.54 Draw a stepwise mechanism for the following...Ch. 18 - Prob. 18.55PCh. 18 - 18.56 Draw a stepwise, detailed mechanism for the...Ch. 18 - Prob. 18.57PCh. 18 - 18.58 Draw a stepwise mechanism for the following...Ch. 18 - Prob. 18.59PCh. 18 - Prob. 18.60PCh. 18 - Prob. 18.61PCh. 18 - Prob. 18.62PCh. 18 - 18.63 Synthesize each compound from benzene and...Ch. 18 - Problem 18.64 Synthesize each compound from...Ch. 18 - Prob. 18.65PCh. 18 - Prob. 18.66PCh. 18 - Prob. 18.67PCh. 18 - Prob. 18.68PCh. 18 - Problem 18.69 Identify the structures of isomers A...Ch. 18 - Prob. 18.70PCh. 18 - Problem 18.71 Compound X (molecular formula ) was...Ch. 18 - 18.72 Reaction of p-cresol with two equivalents of...Ch. 18 - Prob. 18.73PCh. 18 - The NMR spectrum of phenol () shows three...Ch. 18 - Explain the reactivity and orientation effects...Ch. 18 - Prob. 18.76PCh. 18 - Prob. 18.77PCh. 18 - Prob. 18.78PCh. 18 - Prob. 18.79P
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- Phenacetin, a substance formerly used in over-the-counter headache remedies, has the formula C10H13NO2. Phenacetin is neutral and does not dissolve in either acid or base. When warmed with aqueous NaOH, phenacetin yields an amine, C8H11NO, whose 1H NMR spectrum is shown. When heated with HI, the amine is cleaved to an aminophenol, C6H7NO. What is the structure of phenacetin, and what are the structures of the amine and the aminophenol?arrow_forwardPropose a structural formula for each compound consistent with its 1H-NMR and 13C-NMR spectra. (a) C5H10O2 (b) C7H14O2 (c) C6 H12O2 (d) C7H12O4 (e) C4H7ClO2 (f) C4H6O2arrow_forwardWhich compound gives the following 1H NMR spectrum? A. aldehyde B. allyl ether C. ketone D. anisolearrow_forward
- Based on its 13C NMR spectrum, how many types of nonequivalent carbons exist in benzonitrile and how many different types of aromatic (benzene) carbons can be seen in 13C NMR of benzonitrile?arrow_forwardAlthough benzene itself absorbs at 128 ppm in its 13C NMR spectrum, the carbons of substituted benzenes absorb either upfield or downfield from this value depending on the substituent. Explain the observed values for the carbon ortho to the given substituent in the monosubstituted benzene derivatives X and Y.arrow_forwardWhich of the diethylbenzene isomers (ortho, meta, or para) correspondsto each set of 13C NMR spectral data ? 13C NMR signals: 16, 29, 128, and 141 ppmarrow_forward
- Explain 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_forwardAlthough benzene itself absorbs at 128 ppm in its 13C NMR spectrum, the carbons of substituted benzenes absorb either upeld or downeld from this value depending on the substituent. Explain the observed values for the carbon ortho to the given substituent in the monosubstituted benzene derivatives X and Y.arrow_forwardA compound with molecular formula C5H10Br2 displays the following 13C NMR along with the DEPT-90 and DEPT-135 13CNMR spectra. What is the structure for this compound?arrow_forward
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