Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Textbook Question
Chapter 13.SE, Problem 57GP
The 1H and 13C NMR spectra of compound A, C8H9Br, are shown. Propose a structure for A, and assign peaks in the spectra to your structure.
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Treatment of (CH3)2CHCH(OH)CH2CH3 with TsOH affords two products (M and N) with molecular formula C6H12. The 1H NMR spectra of M and N are given below. Propose structures for M and N, and draw a mechanism to explain their formation.
Treatment of (CH3)2CHCH(OH)CH2CH3 with TsOH affords two products(M and N) with molecular formula C6H12. The 1H NMR spectra of M and Nare given below. Propose structures for M and N, and draw a mechanismto explain their formation.
The treatment of (CH3)2C=CHCH2Br with H2O forms B (molecular formulaC5H10O) as one of the products. Determine the structure of B from its 1H NMR and IR spectra.
Chapter 13 Solutions
Organic Chemistry
Ch. 13.1 - Prob. 1PCh. 13.1 - Prob. 2PCh. 13.2 - Prob. 3PCh. 13.3 - The following 1H NMR peaks were recorded on a...Ch. 13.3 - When the 1Η NMR spectrum of acetone, CH3COCH3, is...Ch. 13.4 - Each of the following compounds has a single 1H...Ch. 13.4 - Identify the different types of protons in the...Ch. 13.5 - How many peaks would you expect in the 1H NMR...Ch. 13.6 - Predict the splitting patterns you would expect...Ch. 13.6 - Draw structures for compounds that meet the...
Ch. 13.6 - The integrated 1H NMR spectrum of a compound of...Ch. 13.7 - Identify the indicated sets of protons as...Ch. 13.7 - How many kinds of electronically nonequivalent...Ch. 13.7 - How many absorptions would you expect (S)-malate,...Ch. 13.8 - 3-Bromo-1-phenyl-1-propene shows a complex NMR...Ch. 13.9 - How could you use 1H NMR to determine the...Ch. 13.11 - Prob. 17PCh. 13.11 - Propose structures for compounds that fit the...Ch. 13.11 - Prob. 19PCh. 13.12 - Prob. 20PCh. 13.12 - Prob. 21PCh. 13.12 - Prob. 22PCh. 13.13 - Prob. 23PCh. 13.SE - Into how many peaks would you expect the 1H NMR...Ch. 13.SE - How many absorptions would you expect the...Ch. 13.SE - Sketch what you might expect the 1H and 13C NMR...Ch. 13.SE - How many electronically nonequivalent kinds of...Ch. 13.SE - Identify the indicated protons in the following...Ch. 13.SE - Prob. 29APCh. 13.SE - Prob. 30APCh. 13.SE - When measured on a spectrometer operating at 200...Ch. 13.SE - Prob. 32APCh. 13.SE - Prob. 33APCh. 13.SE - How many types of nonequivalent protons are...Ch. 13.SE - The following compounds all show a single line in...Ch. 13.SE - Prob. 36APCh. 13.SE - Propose structures for compounds with the...Ch. 13.SE - Predict the splitting pattern for each kind of...Ch. 13.SE - Predict the splitting pattern for each kind of...Ch. 13.SE - Identify the indicated sets of protons as...Ch. 13.SE - Identify the indicated sets of protons as...Ch. 13.SE - The acid-catalyzed dehydration of...Ch. 13.SE - How could you use 1H NMR to distinguish between...Ch. 13.SE - Propose structures for compounds that fit the...Ch. 13.SE - Propose structures for the two compounds whose 1H...Ch. 13.SE - Prob. 46APCh. 13.SE - How many absorptions would you expect to observe...Ch. 13.SE - Prob. 48APCh. 13.SE - How could you use 1H and 13C NMR to help...Ch. 13.SE - How could you use 1H NMR, 13C NMR, and IR...Ch. 13.SE - Assign as many resonances as you can to specific...Ch. 13.SE - Assume that you have a compound with the formula...Ch. 13.SE - The compound whose 1H NMR spectrum is shown has...Ch. 13.SE - The compound whose 1H NMR spectrum is shown has...Ch. 13.SE - Propose structures for compounds that fit the...Ch. 13.SE - Long-range coupling between protons more than two...Ch. 13.SE - The 1H and 13C NMR spectra of compound A, C8H9Br,...Ch. 13.SE - Propose structures for the three compounds whose...Ch. 13.SE - The mass spectrum and 13C NMR spectrum of a...Ch. 13.SE - Compound A, a hydrocarbon with M+=96 in its mass...Ch. 13.SE - Propose a structure for compound C, which has...Ch. 13.SE - Prob. 62GPCh. 13.SE - Propose a structure for compound E, C7H12O2, which...Ch. 13.SE - Compound F, a hydrocarbon with M+=96 in its mass...Ch. 13.SE - 3-Methyl-2-butanol has five signals in its 13C NMR...Ch. 13.SE - A 13C NMR spectrum of commercially available...Ch. 13.SE - Carboxylic acids (RCO2H) react with alcohols (ROH)...Ch. 13.SE - Prob. 68GPCh. 13.SE - The proton NMR spectrum is shown for a compound...Ch. 13.SE - The proton NMR spectrum of a compound with the...Ch. 13.SE - The proton NMR spectrum is shown for a compound...
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Following are 1H-NMR spectra for compounds B (C6H12O2) and C (C6H10O). Upon warming in dilute acid, compound B is converted to compound C. Deduce the structural formulas for compounds B and C.
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Compounds Y and Z are isomers with the molecular formula C10H12O. The IR spectrum of each compound shows a strong absorption band near 1710 cm−1 . The 1H NMR spectra of Y and Z are given below. Propose structures for Y and Z.
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From the following 1H-NMR and 13C-NMR spectra, assign a structure for a compound with a formula of C4H9Br:
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Use the 1H NMR and IR spectra given below to identify the structures of two isomers (A and B) having molecular formula C4H8O2.
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The following 1H NMR spectra are for four compounds, each with molecular formula of C6H12O2. Identify the compounds.
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Treatment of trans-2-chlorocyclohexanol with NaOH yields 1, 2-epoxy-cyclohexane, but reaction of the cis isomer under the same conditions yields cyclohexanone. Propose mechanisms for both reactions, and explain why the different results are obtained.
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Compound A (C6H12O2) reacts with water, acid, and heatto yield compound B (C5H10O2) and compound C (CH4O).Compound B is acidic. Deduce possible structures of compounds A, B, and C
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Propose the structure of the following:
a. An alkane, C6H14
b. A crylic saturated hydrocarbon, C6H12
c. A diene (dialkene), C5H8
d. A keto alkene, C5H8O
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Compound B has molecular formula C9H10. The IR spectrum is shown below. The 1H-NMR spectrum shows a multiplet at 7.2 ppm integrating to 4H, a triplet at 2.9 ppm integrating to 4H, and a triplet at 2.1 ppm integrating to 2 H. Suggest a structure for B and explain your reasoning
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There are several isomeric alcohols and ethers of molecular formula C5H12O. Two of these exhibit the following 1H-NMR spectra. Propose a structure for each of the isomers.
Isomer A: δ = 0.92 (t, 7.8 Hz, 3 H), 1.20 (s, 6H), 1.49 (q, 7.8 Hz, 2H), 1.85 (s, 1H) ppm
Isomer B: δ = 1.19 (s, 9 H), 3.21 (s, 3H) ppm
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Propose a structure for compound X (molecular formula C6H12O2), which gives a strong peak in its IR spectrum at 1740 cm−1. The 1H NMR spectrum of X shows only two singlets, including one at 3.5 ppm. The 13C NMR spectrum is given below. Propose a structure for X.
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Identify the structures of A and B, isomers of molecular formula C10H12O2, from their IR data and 1H NMR spectra.a. IR absorption for A at 1718 cm−1b. IR absorption for B at 1740 cm−1
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