Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (i) Br2 (ii) Cl2
(f)
3
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Ch. 9 - Alkenes II: Oxidation and Reduction
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471
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Table of contents
- Ch. 2 - General Chemistry Translated: Finding the Electrons114
- Ch. 3 - Alkanes and Cycloalkanes: Properties and Conformational Analysis109
- Ch. 4 - Acids and Bases: Electron Flow144
- Ch. 5 - Chemical Reaction Analysis: Thermodynamics and Kinetics118
- Ch. 6 - Stereoisomerism: Arrangement of Atoms in Space112
- Ch. 7 - Principles of Green (Organic) Chemistry3
- Ch. 8 - Alkenes I: Properties and Electrophilic Additions158
- Ch. 9 - Alkenes II: Oxidation and Reduction150
- Ch. 10 - Alkynes: Electrophilic Addition and Redox Reactions101
- Ch. 11 - Properties and Synthesis of Alkyl Halides: Radical Reactions108
- Ch. 12 - Substitution and Elimination: Reactions of Haloalkanes172
- Ch. 13 - Alcohols, Ethers and Related Compounds: Substitution and Elimination239
- Ch. 14 - Structural Identification I: Infrared Spectroscopy and Mass Spectrometry54
- Ch. 15 - Structural Identification II: Nuclear Magnetic Resonance Spectroscopy93
- Ch. 16 - Metals in Organic Chemistry48
- Ch. 17 - Carbonyl Addition Reactions: Aldehydes and Ketones45
- Ch. 18 - Nucleophilic Acyl Substitution I: Carboxylic Acids18
- Ch. 19 - Nucleophilic Acyl Substitution II: Carboxylic Acid Derivatives39
- Ch. 20 - Enolates: Carbonyl Addition and Substitution13
- Ch. 21 - Conjugated Systems I: Stability and Addition Reactions56
- Ch. 22 - Conjugated Systems II: Pericyclic Reactions54
- Ch. 23 - Benzene I: Aromatic Stability and Substitution Reactions64
- Ch. 24 - Benzene II: Reactions Influenced by the Aromatic Ring62
- Ch. 25 - Amines: Structure, Reactions, and Synthesis27
- Ch. 26 - Amino Acids, Proteins, and Peptide Synthesis9
- Ch. 27 - Carbohydrates, Nucleic Acids, and Lipids54
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471Not the one you use?Change textbook
Chapter 8, Problem 45f(vii,viii)
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (vii) 1. mCPBA 2. (viii) 1. O3 2. CH3SCH3
(f) 
Verified step by step guidance1
Step 1: Analyze the given alkene structure. The molecule contains a double bond in the middle of the chain, which will be the reactive site for the given reagents.
Step 2: For reaction (vii) with mCPBA (meta-chloroperoxybenzoic acid), this reagent is used to perform an epoxidation reaction. The double bond will react with mCPBA to form an epoxide (a three-membered cyclic ether).
Step 3: For reaction (viii) with O₃ (ozone) followed by CH₃SCH₃ (dimethyl sulfide), this is an ozonolysis reaction. Ozone cleaves the double bond, and the dimethyl sulfide reduces the ozonide intermediate to form aldehydes or ketones depending on the substituents attached to the double bond.
Step 4: Identify the products for each reaction. For (vii), the product will be an epoxide formed across the double bond. For (viii), the double bond will be cleaved, and two carbonyl compounds will be formed at the positions where the double bond was located.
Step 5: Draw the structures of the products for both reactions to confirm the outcomes. Ensure that the stereochemistry (if applicable) and the functional groups are correctly represented in the final products.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Epoxidation
Epoxidation is a reaction where an alkene is converted into an epoxide, a three-membered cyclic ether. This transformation typically occurs using peracids, such as m-chloroperbenzoic acid (mCPBA). The reaction involves the electrophilic attack of the peracid on the double bond, resulting in the formation of the epoxide and a carboxylic acid as a byproduct.
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Ozonolysis
Ozonolysis is a reaction involving the cleavage of alkenes using ozone (O₃), followed by a reductive workup, often with a thiol like dimethyl sulfide (CH₃SCH₃). This process results in the formation of carbonyl compounds, such as aldehydes or ketones, depending on the structure of the alkene. It is a valuable method for determining the structure of alkenes and synthesizing carbonyl compounds.
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Reaction Mechanisms
Understanding reaction mechanisms is crucial in organic chemistry as it explains the step-by-step process by which reactants are converted into products. For both epoxidation and ozonolysis, knowing the mechanism helps predict the products formed and the conditions required for the reactions. This knowledge is essential for designing synthetic pathways and understanding the reactivity of different functional groups.
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Related Practice
Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (ix) H2, Pd/C; and (x) D2, Pd/C.
(f)
2
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Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (iii) Br2, H2O ; (iv) Cl2, CH3OH
(f)
6
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Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (iv) Cl2, CH3OH
(h)
Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (v) mCPBA; (vi) 1. OsO4 2. NaHSO3
(f)
1
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Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (vii) 1. mCPBA 2. H2SO4, H2O
(h)
4
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