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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Textbook Question
Chapter 10, Problem 10.33P
Two diastereomeric sets of enantiomers, A/B and C/D, exist for 3-bromo-2-butanol.
When enantiomer A or B is treated with HBr, only racemic 2,3-dibromobutane is formed; no meso isomer is formed. When enantiomer C or D is treated with HBr, only meso 2,3-dibromobutane is formed; no racemic 2,3-dibromobutane is formed. Account for these observations.
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Draw the structure of an alkyl bromide with molecular formula C-H₁3Br that fits each description:
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5-Hydroxyhexanal forms a six-membered cyclic hemiacetal, which predominates at equilibrium in aqueous solution.
(a) Draw a structural formula for this cyclic hemiacetal.
(b) How many stereoisomers are possible for 5-hydroxyhexanal?
(c) How many stereoisomers are possible for this cyclic hemiacetal?
(d) Draw alternative chair conformations for each stereoisomer and label groups axial or Also predict which of the alternative chair conformations for each stereoisomer is more stable.
Two diastereomeric sets of enantiomers, A/B and C/D, exist for 3-bromo-2-butanol.
CH3
HO--H
CH3
HO -H
CH3
CH,
H OH
H OH
Br
Br
H-
Br
Br
H.
CH3
ČH3
CH3
CH3
A
B
C
D
When enantiomer A or B is treated with HBr, only racemic 2,3-dibromobutane is
formed; no meso isomer is formed. When enantiomer C or D is treated with HBr, only
meso 2,3-dibromobutane is formed; no racemic 2,3-dibromobutane is formed. Account
for these observations.
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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