Organic Chemistry
11th Edition
ISBN: 9781118133576
Author: T. W. Graham Solomons, Craig Fryhle
Publisher: Wiley, John & Sons, Incorporated
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Textbook Question
Chapter 11, Problem 11PP
Practice Problem 11.11
An exception to what is stated above has to do with syntheses of unsymmetrical ethers in which one alkyl group is a tert-butyl group and the other group is primary. For example, this synthesis can be accomplished by adding tm-butyl alcohol to a mixture of the primary alcohol and
Give a likely mechanism for this reaction and explain why it is successful.
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Using your reaction roadmap as a guide, show how to convert 1-butanol and ethanol into racemic 2-ethoxy-1-butanol. You must use 1-butanol and ethanol as the source of
all carbon atoms in the ether product.
(1)
(2)
(3)
OH
(4)
2-ethoxy-1-butanol
(racemic)
OH
Suggest reagents and experimental conditions for each step in this synthesis.
From the choices provided, suggest appropriate reagents for each step. More than one reagent may be necessary. Use the minimum number of steps possible. Enter your
answer as a letter, or a series of letters, in the order necessary to bring about the steps shown.
Reagents:
OH
(c) ethylene oxide
(a) (CH3)3CO¯K+, THF (d) H₂SO4, H₂O
(b) OsO4, H₂O2
Br
OH
+
(9) H₂ SO4 (anhydrous) Na, NH3 (1)
(k) NBS, heat
(e) m-chloroperoxybenzoic acid
(mCPBA)
(f) pyridinium chlorochromate) PBr3
(PCC)
(h) NaOH
(N-bromosuccinimide)
Previous
Next
Using your reaction roadmap as a guide, show how to convert 1-butanol and ethanol into racemic 2-ethoxy-1-butanol. You must use 1-butanol and ethanol as the source of
all carbon atoms in the ether product.
(1)
(2)
(3)
OH
(4)
2-ethoxy-1-butanol
(racemic)
OH
OH
Suggest reagents and experimental conditions for each step in this synthesis.
From the choices provided, suggest appropriate reagents for each step. More than one reagent may be necessary. Use the minimum number of steps possible. Enter your
answer as a letter, or a series of letters, in the order necessary to bring about the steps shown.
Reagents:
1
(a) (CH3)3 CO K+, THF (d) H₂SO4, H₂O
(b) OsO4, H₂O2
(c) ethylene oxide
Br
(e) m-chloroperoxybenzoic acid
OH
(mCPBA)
(f) pyridinium chlorochromate
(PCC)
|| Ⓡ
(g) H₂SO4 (anhydrous)
(h) NaOH
(i) PBr3
(j) Na, NH3 (1)
(k) NBS, heat
(N-bromosuccinimide)
Previous
Next
Subject-chemistry
Chapter 11 Solutions
Organic Chemistry
Ch. 11 - Prob. 1PPCh. 11 - Practice Problem 11.2 Give bond-line formulas and...Ch. 11 - Prob. 3PPCh. 11 - Prob. 4PPCh. 11 - Prob. 5PPCh. 11 - Prob. 6PPCh. 11 - Prob. 7PPCh. 11 - PRACTICE PROBLEM
11.8 Show how you would prepare...Ch. 11 - PRACTICE PROBLEM
11.9 Write structures for...Ch. 11 - Prob. 10PP
Ch. 11 - Practice Problem 11.11
An exception to what is...Ch. 11 - Prob. 12PPCh. 11 - Prob. 13PPCh. 11 - Prob. 14PPCh. 11 - Prob. 15PPCh. 11 - Prob. 16PPCh. 11 - Prob. 17PPCh. 11 - Prob. 18PPCh. 11 - Practice Problem 11.19
Propose structures for each...Ch. 11 - Prob. 20PPCh. 11 - Prob. 21PPCh. 11 - Prob. 22PPCh. 11 - Prob. 23PPCh. 11 - Prob. 24PPCh. 11 - Give an IUPAC substitutive name for each of the...Ch. 11 - Prob. 26PCh. 11 - Prob. 27PCh. 11 - Prob. 28PCh. 11 - Prob. 29PCh. 11 - 11.30. Show how you might prepare 2-bromobutane...Ch. 11 - Prob. 31PCh. 11 - Prob. 32PCh. 11 - 11.33 What compounds would you expect to be formed...Ch. 11 - Considering A-L to represent the major products...Ch. 11 - Write structures for the products that would be...Ch. 11 - Prob. 36PCh. 11 - 11.37 Outlined below is a synthesis of the gypsy...Ch. 11 - Provide the reagents necessary for the following...Ch. 11 - 11.38. Predict the major product from each of the...Ch. 11 - Prob. 40PCh. 11 - Provide the reagents necessary to accomplish the...Ch. 11 - 11.41. Provide reagents that would accomplish the...Ch. 11 - Prob. 43PCh. 11 - 11.44 Write a mechanism that accounts for the...Ch. 11 - Prob. 45PCh. 11 - Prob. 46PCh. 11 - Prob. 47PCh. 11 - 11.47. Vicinal halo alcohols (halohydrins) can be...Ch. 11 - Prob. 49PCh. 11 - Prob. 50PCh. 11 - Prob. 51PCh. 11 - Prob. 52PCh. 11 - Prob. 53PCh. 11 - 11.57. When the 3-bromo-2-butanol with the...Ch. 11 - 11.58. Reaction of an alcohol with thionyl...Ch. 11 - Prob. 56PCh. 11 - Prob. 57PCh. 11 - Prob. 1LGPCh. 11 - Prob. 2LGPCh. 11 - Synthesize the compound shown below from...Ch. 11 - 11.1 Which set of reagents would effect the...Ch. 11 - Prob. 2QCh. 11 - 11.3 The following compounds have identical...Ch. 11 - Complete the following synthesis:Ch. 11 - Two configurations can actually be envisioned for...
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