Organic Chemistry
8th Edition
ISBN: 9781305580350
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher: Cengage Learning
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Chapter 10, Problem 10.46P
Interpretation Introduction
Interpretation:
Stereo- and region- selectivity of the alcohol formation from the given
Concept Introduction:
Addition of H and OH across alkene: Hydroboration-Oxidation converts alkene into alcohols. The stereochemistry is always syn (H and OH add to same side of the alkene).
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Hydroboration of the following bicycloalkene followed by oxidation in alkaline hydroperoxide is both stereoselective and regioselective. The product is a single alcohol in better than 95% yield.Propose a structural formula for this alcohol and account for the stereo- and regio- selectivity of its formation. Hint: Examine a molecular model of this alkene and see if you can determine which face of the double bond is more accessible to hydroboration.
Ethers can be prepared by reaction of an alkoxide or phenoxide ion with a primary alkyl halide.
Draw the structure of the expected organic product of the reaction of iodoethane with the following alkoxide ion:
H3C
CH3
+
Na
You do not have to consider stereochemistry.
You do not have to explicitly draw H atoms.
Do not include lone pairs in your answer. They will not be considered in the grading.
• Do not include counter-ions, e.g., Na", I, in your answer.
P
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aste
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Alkynes do not react directly with aqueous acid as do alkenes, but will do so in the presence of mercury(II) sulfate as a Lewis acid catalyst. The reaction occurs with Markovnikov
regiochemistry, so the OH group adds to the more highly substituted carbon and the H adds to the less highly substituted carbon. The initial product of the reaction is a vinyl alcohol, also called
an enol. The enol immediately rearranges to a more stable ketone via tautomerization.
Draw curved arrows to show the movement of electrons in this step of the mechanism.
Arrow-pushing Instructions
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Chapter 10 Solutions
Organic Chemistry
Ch. 10.1 - Write IUPAC names for these alcohols and include...Ch. 10.1 - Classify each alcohol as primary, secondary, or...Ch. 10.1 - Write IUPAC names for these unsaturated alcohols.Ch. 10.2 - Arrange these compounds in order of increasing...Ch. 10.2 - Prob. 10.5PCh. 10.4 - Predict the position of equilibrium for this...Ch. 10.5 - Show how to convert (R)-2-pentanol to...Ch. 10.6 - Draw structural formulas for the alkenes formed by...Ch. 10.6 - Propose a mechanism to account for this...Ch. 10.7 - Propose a mechanism to account for the following...
Ch. 10.7 - Prob. AQCh. 10.7 - Prob. BQCh. 10.7 - Prob. CQCh. 10.7 - Prob. DQCh. 10.7 - Which step in the reaction would you expect to be...Ch. 10.7 - Prob. FQCh. 10.7 - Prob. GQCh. 10.8 - Prob. 10.11PCh. 10.8 - Prob. AQCh. 10.8 - Prob. BQCh. 10.8 - Prob. CQCh. 10.8 - Why does nature use a reagent as complex as NAD+...Ch. 10.8 - -Hydroxyketones and -hydroxyaldehydes are also...Ch. 10.9 - Write IUPAC names for these thiols.Ch. 10 - Which are secondary alcohols?Ch. 10 - Name each compound.Ch. 10 - Prob. 10.16PCh. 10 - Name and draw structural formulas for the eight...Ch. 10 - Arrange these compounds in order of increasing...Ch. 10 - Arrange these compounds in order of increasing...Ch. 10 - Prob. 10.20PCh. 10 - Prob. 10.21PCh. 10 - Arrange the compounds in each set in order of...Ch. 10 - Prob. 10.23PCh. 10 - The decalinols A and B can be equilibrated using...Ch. 10 - Prob. 10.25PCh. 10 - Select the stronger acid from each pair and...Ch. 10 - Prob. 10.27PCh. 10 - In each equilibrium, label the stronger acid, the...Ch. 10 - Write equations for the reaction of 1-butanol with...Ch. 10 - Write equations for the reaction of 2-butanol with...Ch. 10 - Prob. 10.31PCh. 10 - When (R)-2-butanol is left standing in aqueous...Ch. 10 - Two diastereomeric sets of enantiomers, A/B and...Ch. 10 - Acid-catalyzed dehydration of 3-methyl-2-butanol...Ch. 10 - Show how you might bring about the following...Ch. 10 - Propose a mechanism for the following pinacol...Ch. 10 - Prob. 10.37PCh. 10 - Show how each alcohol or diol can be prepared from...Ch. 10 - Dihydropyran is synthesized by treating...Ch. 10 - Show how to convert propene to each of these...Ch. 10 - Prob. 10.41PCh. 10 - Prob. 10.42PCh. 10 - The tosylate of a primary alcohol normally...Ch. 10 - Prob. 10.44PCh. 10 - Show how to convert cyclohexene to each compound...Ch. 10 - Prob. 10.46PCh. 10 - Ethanol (CH3CH2OH) and dimethyl ether (CH3OCH3)...Ch. 10 - Prob. 10.48PCh. 10 - Prob. 10.49PCh. 10 - Prob. 10.50PCh. 10 - Write the products of the following sequences of...Ch. 10 - Alcohols are important for organic synthesis,...Ch. 10 - Using your reaction roadmap as a guide, show how...Ch. 10 - Using your reaction roadmap as a guide, show how...Ch. 10 - Using your reaction roadmap as a guide, show how...Ch. 10 - Using your reaction roadmap as a guide, show how...Ch. 10 - Prob. 10.57PCh. 10 - Prob. 10.58PCh. 10 - Prob. 10.59P
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