Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
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Textbook Question
Chapter 7, Problem 62P
(a) Using reactions studied in this chapter, show steps by which this
(b) Could the homologous products obtained in these two cases be relied upon to show infrared absorption in the
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(d)
Ozonolysis of 3,4-dimethyl-3-hexene gives compound D.
(i)
Write the reaction step for the formation of D by including the
appropriate reagents.
(ii)
The mass spectrum of compound D shows a fragment ion peak at m/z
57. Propose the structure of this fragment ion.
(ii)
Identify the more stable resonance of the proposed structure in (ii).
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.
As reaction of (CH3)2CO with LIC≡CH followed by H2O affords compound D, which has a molecular ion in its mass spectrum at 84 and prominent absorptions in its IR spectrum at 3600−3200, 3303, 2938, and 2120 cm−1. D shows the following 1H NMR spectral data: 1.53 (singlet, 6 H), 2.37 (singlet, 1 H), and 2.43 (singlet, 1 H) ppm. What is the structure of D?
Chapter 7 Solutions
Organic Chemistry
Ch. 7 - Prob. 1PPCh. 7 - Prob. 2PPCh. 7 - Prob. 3PPCh. 7 - Prob. 4PPCh. 7 - Practice Problem 7.5
How many stereoisomers are...Ch. 7 - Prob. 6PPCh. 7 - Prob. 7PPCh. 7 - PRACTICE PROBLEM 7.8
Examine Solved Problem 7.3....Ch. 7 - Prob. 9PPCh. 7 - Practice Problem 7.10 When...
Ch. 7 - Practice Problem 7.11
(a) When...Ch. 7 - Prob. 12PPCh. 7 - Prob. 13PPCh. 7 - Practice Problem 7.14
Dehydration of 2-propanol...Ch. 7 - Practice Problem 7.15
Rank the following alcohols...Ch. 7 - Practice Problem 7.16
Acid-catalyzed dehydration...Ch. 7 - Practice Problem 7.17 Acid-catalyzed dehydration...Ch. 7 - Prob. 18PPCh. 7 - Prob. 19PPCh. 7 - Practice Problem 7.20
Show how you might...Ch. 7 - Prob. 21PPCh. 7 - Prob. 22PPCh. 7 - Practice Problem 7.23
Write the structure of...Ch. 7 - Prob. 24PPCh. 7 - Prob. 25PPCh. 7 - Practice Problem 7.26 (a) Devise retrosynthetic...Ch. 7 - Each of the following names is incorrect, Give the...Ch. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Give the IUPAC names for each of the following:...Ch. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - 7.35. Write structural formulas for all the...Ch. 7 - 7.36. Explain the following observations: When...Ch. 7 - Prob. 37PCh. 7 - Arrange the following alcohols in order of their...Ch. 7 - Prob. 39PPCh. 7 - Prob. 40PPCh. 7 - Prob. 41PPCh. 7 - Prob. 42PPCh. 7 - Your task is to prepare isopropyl methyl ether by...Ch. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - 7.47. Starting with an appropriate alkyl halide...Ch. 7 - Prob. 48PCh. 7 - 7.49. What is the index of hydrogen deficiency...Ch. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Compounds I and J both have the molecular formula...Ch. 7 - Prob. 53PCh. 7 - 7.54. Outline a synthesis of phenylethyne from...Ch. 7 - Prob. 55PPCh. 7 - Prob. 56PPCh. 7 - Prob. 57PPCh. 7 - cis-4-Bromocyclohexanol tBuOHtBuO racemic C6H10O...Ch. 7 - Prob. 59PPCh. 7 - Consider the interconversion of cis-2-butene and...Ch. 7 - Prob. 61PCh. 7 - (a) Using reactions studied in this chapter, show...Ch. 7 - Prob. 63PCh. 7 - Prob. 64PCh. 7 - 1. Write the structure(s) of the major product(s)...Ch. 7 - Prob. 2LGPCh. 7 - (a) Write the structure of the product(s) formed...Ch. 7 - Prob. 4LGP
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- (c) You conducted an experiment involving a hydrohalogenation reaction with starting material A and HBr. Product C was obtained as the major product of the reaction instead of the regioisomer product B which you expected. CH3 CH3 CH3 Br Br + HBr Product B Starting material A Product C (i) Suggest a detailed reaction mechanism to explain the formation of the major product C. (ii) Briefly explain why this unexpected major product C predominated in your reaction. Question 1 Continued (iii) 1,2-elimination of HBr from product C yields a mixture of two alkenes. Draw the structures of the two alkene products and briefly explain using Zaitsev's rule which alkene is the major one.arrow_forward(c) The E2 elimination of bromoalkane 8 produces a range of alkenes as shown below, answer ALL parts (i) to (iii) Br 8 Ph NaOMe Ph 9 + FOUR more alkenes (i) Identify the structure of the four other possible alkene products. (ii) Assign the stereochemistry (E/Z) for all FIVE alkenes and explain which is likely to be the major product. (iii) With an explanation identify which stereoisomer of 8 would give alkene 9?arrow_forwardFuran undergoes electrophilic aromatic substitution more readily than benzene; mild reagents and conditions are sufficient.For example, furan reacts with bromine to give 2-bromofuran.(a) Propose mechanisms for the bromination of furan at the 2-position and at the 3-position. Draw the resonance forms ofeach sigma complex, and compare their stabilities.(b) Explain why furan undergoes bromination (and other electrophilic aromatic substitutions) primarily at the 2-position.O Br O123furan 2-bromofuranarrow_forward
- (a) The Friedel-Crafts reaction of benzene with 2-chloro-3-methylbutane in the presence of AlCl3 occurs with a carbocation rearrangement. Give mechanistic explanation and the product formed. (b) Predict the product(s) will be formed from the following reactions: (i) Bromination of p-methylbenzoic acid (ii) Sulphonation of m-bromoanisole (iii) Friedel-craft acylation of o-bromonitrobenzenearrow_forward(3) HI does not undergo free radical addition with 1-butene, even in the presence of a peroxide. Please provide an explanation by analyzing the propagation steps if the same radical reaction occurred with HI. Besides the bond dissociation enthalpies in the appendix, the following approximate bond dissociate enthalpies might be useful to you: ~310 kJ/mol The component of C=C CH3CH₂CH₂CH₂-Br CH3CH₂CH₂CH2-I -290 kJ/mol (C-Br bond) ~235 kJ/mol (C-I bond)arrow_forwardThe treatment of (CH3)2C=CHCH2Br with H2O forms B (molecular formula C5H10O) as one of the products. Determine the structure of B from its 1H NMR and IR spectra.arrow_forward
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- Three compounds, A, B, and C, have the same molecular formula, C5H6. In the presence of a platinum catalyst, all three compounds absorb 3 molar equivalents of hydrogen and yield pentane. Compounds B and C give a precipitate when treated with ammoniacal silver nitrate; compound A give no reaction. Compounds A and B show an absorption maximum near 250 nm. Compound C shows no absorption maximum beyond 200 nm. Propose a structure for A, B, and C.arrow_forwardOn being heated with a solution of sodium ethoxide in ethanol, compound A (C7H15Br) produced a mixture of two alkenes B and C, each of which had the molecular formula C7H14. Catalytic hydrogenation of major isomer B or minor isomer C gave only 3-ethylpentane. Suggest structures and mechanisms for compounds A, B, and C consistent with these observations.arrow_forward(b) Answer BOTH parts (i) and (ii). (i) Using your knowledge of silicon chemistry, explain why the synthesis of a compound containing a formal Si=0 double bond is challenging. (ii)Bearing in mind your answer to part (i), suggest a synthetic route to a silanone, R2Si=O, starting from silicon tetrachloride SiCl4 and using any other reagents you choose. Identify all reagents and side-products in your synthetic route and specify your chosen R group, giving reasons for your choice.arrow_forward
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