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 6, Problem 6.51P
In this chapter, we studied the mechanism of the acid-catalyzed hydration of an
Propene
2-Propanol
(Isopropyl alcohol)
Propose a mechanism for the acid-catalyzed dehydration of 2-propanol to propene.
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Acid-catalyzed dehydration of secondary and tertiary alcohols proceeds through an E1 mechanism. The
first step is the protonation of the alcohol oxygen to form an oxonium ion.
Dehydration of 3-methyl-2-butanol forms one major and two minor organic products. Draw the structures,
including hydrogen atoms, of the three organic products of this reaction.
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Нас.
CHз
CH3
ČH3
CH3
3-methyl-2-butanol
an oxonium ion
Major Product
Minor Product
Minor Product
Aldehydes and ketones react with one molecule of an alcohol to form compounds called hemiacetals, in which there is one hydroxyl group and one ether-like group. Reaction of a hemiacetal with a second
molecule of alcohol gives an acetal and a molecule of water.
ROH, H+
OH
OR
Aldehyde/ketone
Alcohol
ROH, H+
Draw the structural formulas for the hemiacetal and the acetal formed between the following compounds:
OH
OH
OR
OR
• Use the wedge/hash bond tools to indicate stereochemistry where it exists.
+ H₂O
Esterication is the reaction of a carboxylic acid (RCOOH) with an alcohol (R'OH) to form an ester (RCOOR') with loss of water. Equation [1] is an example of an intermolecular esterication reaction. Equation [2] is an example of an intramolecular esterication reaction; that is, the carboxylic acid and alcohol are contained in the same starting material, forming a cyclic ester as product. The equilibrium constants for both reactions are given. Explain why Keq is different for these two apparently similar reactions.
Chapter 6 Solutions
Organic Chemistry
Ch. 6.2 - Using the BDE values from Appendix 3, calculate...Ch. 6.3 - Name and draw a structural formula for the product...Ch. 6.3 - Prob. 6.3PCh. 6.3 - Propose a mechanism for the addition of HI to...Ch. 6.3 - Prob. 6.5PCh. 6.3 - Propose a mechanism for the acid-catalyzed...Ch. 6.3 - The acid-catalyzed hydration of...Ch. 6.3 - Complete these reactions. (a) (b)Ch. 6.3 - Draw the structure of the chlorohydrin formed by...Ch. 6.4 - Draw structural formulas for the alkene that gives...
Ch. 6.5 - Prob. 6.11PCh. 6.5 - Prob. 6.12PCh. 6.5 - What alkene with the molecular formula C6H12, when...Ch. 6 - Prob. 6.15PCh. 6 - Prob. 6.16PCh. 6 - Predict the organic product(s) of the reaction of...Ch. 6 - Prob. 6.18PCh. 6 - Prob. 6.20PCh. 6 - Draw a structural formula for an alkene with the...Ch. 6 - Account for the fact that addition of HCl to...Ch. 6 - Account for the fact that treating propenoic acid...Ch. 6 - Draw a structural formula for the alkene with the...Ch. 6 - Draw the alternative chair conformations for the...Ch. 6 - Draw a structural formula for the cycloalkene with...Ch. 6 - Reaction of this bicycloalkene with bromine in...Ch. 6 - Terpin, prepared commercially by the...Ch. 6 - Propose a mechanism for this reaction and account...Ch. 6 - Treating 2-methylpropene with methanol in the...Ch. 6 - When 2-pentene is treated with Cl2 in methanol,...Ch. 6 - Treating cyclohexene with HBr in the presence of...Ch. 6 - Propose a mechanism for this reaction. 1-Pentane...Ch. 6 - Treating 4-penten-1-ol with bromine in water forms...Ch. 6 - Prob. 6.35PCh. 6 - Prob. 6.36PCh. 6 - Reaction of -pinene with borane followed by...Ch. 6 - Write structural formulas for the major organic...Ch. 6 - Draw the structural formula of the alkene that...Ch. 6 - Consider the following reaction. (a) Draw a...Ch. 6 - Prob. 6.42PCh. 6 - Prob. 6.43PCh. 6 - Show how to convert ethylene to these compounds....Ch. 6 - Show how to convert cyclopentene into these...Ch. 6 - Prob. 6.46PCh. 6 - Describe the stereochemistry of the bromohydrin...Ch. 6 - Prob. 6.49PCh. 6 - Treating 1,3-butadiene with 1 mole of HBr gives a...Ch. 6 - In this chapter, we studied the mechanism of the...Ch. 6 - As we have seen in this chapter, carbon-carbon...Ch. 6 - Prob. 6.53PCh. 6 - Prob. 6.54P
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How to Design a Total Synthesis; Author: Chemistry Unleashed;https://www.youtube.com/watch?v=9jRfAJJO7mM;License: Standard YouTube License, CC-BY