Textbook Question
Dichlorocarbene can also be generated by heating sodium trichloroacetate. Propose a mechanism for the reaction.
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Ch. 6 - The Reactions of Alkenes • The Stereochemistry of Addition Reactions
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
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Table of contents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 1)31
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 2)65
- Ch. 2 - Acids and Bases: Central to Understanding Organic Chemistry84
- Ch. 3 - An Introduction to Organic Compounds:Nomenclature, Physical Properties, and Structure183
- Ch. 4 - Isomers: The Arrangement of Atoms in Space121
- Ch. 5 - Alkenes: Structure, Nomenclature, and an Introduction to Reactivity • Thermodynamics and Kinetics83
- Ch. 6 - The Reactions of Alkenes • The Stereochemistry of Addition Reactions175
- Ch. 7 - The Reactions of Alkynes • An Introduction to Multistep Synthesis119
- Ch. 8 - Delocalized Electrons: Their Effect on Stability, pKa, and the Products of a Reaction • Aromaticity and Electronic Effects: An Introduction to the Reactions of Benzene148
- Ch. 9 - Substitution and Elimination Reactions of Alkyl Halides212
- Ch. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing Compounds131
- Ch. 11 - Organometallic Compounds60
- Ch. 12 - Radicals90
- Ch. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy62
- Ch. 14 - NMR Spectroscopy95
- Ch. 15 - Reactions of Carboxylic Acids and Carboxylic Acid Derivatives123
- Ch. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid Derivatives141
- Ch. 17 - Reactions at the Alpha-Carbon101
- Ch. 18 - Reactions of Benzene and Substituted Benzenes144
- Ch. 19 - More About Amines • Reactions of Heterocyclic Compounds49
- Ch. 20 - The Organic Chemistry of Carbohydrates80
- Ch. 21 - Amino Acids, Peptides, and Proteins57
- Ch. 22 - Catalysis in Organic Reactions and in Enzymatic Reactions35
- Ch. 23 - The Organic Chemistry of the Coenzymes—Compounds Derived from Vitamins1
- Ch. 28 - Pericyclic Reactions58
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Bruice 8th EditionCh. 6 - The Reactions of Alkenes • The Stereochemistry of Addition ReactionsProblem 94b
Bruice 8th EditionCh. 6 - The Reactions of Alkenes • The Stereochemistry of Addition ReactionsProblem 94bChapter 7, Problem 94b
What alkene gives the product shown after reaction first with ozone and then with dimethyl sulfide?
b. 
Verified step by step guidance1
Step 1: Understand the reaction mechanism. Ozonolysis is a reaction where an alkene reacts with ozone (O₃) to form an ozonide intermediate. This intermediate is then reduced by dimethyl sulfide (DMS) to yield carbonyl compounds (aldehydes or ketones). The product structure provided shows two ketones, indicating the cleavage of a double bond in the original alkene.
Step 2: Analyze the product structure. The product contains two ketones: one is part of a cyclohexanone ring, and the other is a ketone group attached to a cyclopentane ring. This suggests that the original alkene was part of a cyclic structure that was cleaved into these two fragments.
Step 3: Reconstruct the original alkene. To determine the alkene, reverse the ozonolysis process. Connect the two carbonyl carbons in the product structure with a double bond. This double bond represents the original alkene that underwent ozonolysis.
Step 4: Verify the connectivity. Ensure that the reconstructed alkene matches the product after ozonolysis and reduction. The double bond should be positioned such that cleavage yields the observed ketones.
Step 5: Draw the original alkene. Based on the analysis, the original alkene is a cyclic structure with a double bond connecting the two carbonyl carbons. This alkene would yield the given product after ozonolysis followed by reduction with dimethyl sulfide.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Ozonolysis
Ozonolysis is a reaction involving the cleavage of alkenes using ozone (O3) to form carbonyl compounds. The process typically occurs in two steps: first, the alkene reacts with ozone to form a molozonide, which rearranges to form ozonide. This ozonide is then reduced, often using a reagent like dimethyl sulfide (DMS), to yield aldehydes or ketones, depending on the structure of the original alkene.
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General properties of ozonolysis.
Dimethyl Sulfide (DMS)
Dimethyl sulfide is a common reducing agent used in organic chemistry, particularly in the reduction of ozonides formed during ozonolysis. DMS effectively converts the ozonide into stable carbonyl compounds, such as aldehydes or ketones, by donating electrons and facilitating the removal of the ozone-derived functional groups. Its use is favored due to its mildness and ability to produce fewer side products.
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Alkene Structure and Reactivity
The structure of alkenes, characterized by a carbon-carbon double bond, significantly influences their reactivity in chemical reactions. The position and substitution of the double bond determine how the alkene will react with ozone and other reagents. Understanding the stereochemistry and the electronic effects of substituents on the alkene is crucial for predicting the products of ozonolysis and other reactions.
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Related Practice
Textbook Question
Draw the products of the following reactions, including their configurations:
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Textbook Question
Draw the products of the following reactions, including their configurations:
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Textbook Question
What alkene gives the product shown after reaction first with ozone and then with dimethyl sulfide?
a.
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Textbook Question
Two chemists at Dupont found that ICH2ZnI is better than diazomethane at converting a C=C bond to a cylcopropane ring. Propose a mechanism for the reaction, now known as the Simmons–Smith reaction in their honor.
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Textbook Question
What alkene gives the product shown after reaction first with ozone and then with dimethyl sulfide?
c.
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