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 94a
Bruice 8th EditionCh. 6 - The Reactions of Alkenes • The Stereochemistry of Addition ReactionsProblem 94aChapter 7, Problem 94a
What alkene gives the product shown after reaction first with ozone and then with dimethyl sulfide?
a. 
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).
Step 2: Analyze the product structure provided in the image. The product contains two carbonyl groups: one is a ketone (on the right side) and the other is a cyclic ketone (on the left side). This suggests that the original alkene was cleaved into these two fragments.
Step 3: Determine the original alkene structure. To reverse-engineer the alkene, connect the two carbonyl carbons from 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 carbon chain and substituents in the reconstructed alkene match the product fragments after cleavage. The cyclic ketone indicates that one part of the alkene was part of a ring structure.
Step 5: Draw the alkene structure. Based on the analysis, the original alkene should have a double bond connecting the carbon of the cyclic structure to the carbon of the linear chain leading to the second ketone group.
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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, such as aldehydes and ketones. The process typically occurs in two steps: first, the alkene reacts with ozone to form a molozonide, which rearranges to a more stable ozonide. This ozonide is then reduced, often using a reagent like dimethyl sulfide (DMS), to yield the final carbonyl products.
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General properties of ozonolysis.
Alkene Structure
Alkenes are hydrocarbons that contain at least one carbon-carbon double bond (C=C). The structure of the alkene, including the position and substitution of the double bond, significantly influences the products formed during reactions like ozonolysis. Understanding the specific alkene structure is crucial for predicting the resulting carbonyl compounds after ozonolysis.
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Dimethyl Sulfide (DMS) as a Reducing Agent
Dimethyl sulfide (DMS) is commonly used as a reducing agent in organic chemistry, particularly in the reduction of ozonides formed during ozonolysis. DMS facilitates the conversion of the ozonide into stable carbonyl compounds by donating electrons, effectively breaking the unstable ozonide bond. This step is essential for obtaining the final products from the initial alkene.
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Related Practice
Textbook Question
What alkene gives the product shown after reaction first with ozone and then with dimethyl sulfide?
b.
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Textbook Question
Draw the products of the following reactions, including their configurations:
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Textbook Question
The reaction of an alkene with diazomethane forms a cyclopropane ring. Propose a mechanism for the reaction. (Hint: It is a concerted reaction.)
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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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