Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (i) Br2 (ii) Cl2.
(e)
1
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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 45e(v)
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (v) mCPBA;
(k) 
Verified step by step guidance1
Identify the structure of the alkene in the reaction. Alkenes are characterized by a carbon-carbon double bond (C=C). The reactivity of the alkene depends on its substitution pattern (e.g., monosubstituted, disubstituted, etc.).
Understand the reagent used in the reaction. mCPBA (meta-chloroperoxybenzoic acid) is a peracid commonly used for epoxidation of alkenes. It reacts with the double bond to form an epoxide (a three-membered cyclic ether).
Draw the mechanism of the reaction. The oxygen atom from mCPBA adds across the double bond of the alkene in a concerted reaction mechanism, forming the epoxide. This reaction is stereospecific, meaning the stereochemistry of the starting alkene (cis or trans) will be retained in the product.
Consider the stereochemistry of the product. If the alkene is cis, the epoxide will also be cis. If the alkene is trans, the epoxide will be trans. This is due to the concerted nature of the reaction, which does not allow for rearrangement.
Verify the product structure. Ensure that the epoxide is correctly drawn with the oxygen atom forming a three-membered ring with the two carbons that were originally part of the double bond. Double-check the stereochemistry to confirm it matches the starting alkene.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Alkenes
Alkenes are hydrocarbons that contain at least one carbon-carbon double bond (C=C). They are unsaturated compounds and can undergo various reactions, including addition and oxidation. Understanding the structure and reactivity of alkenes is crucial for predicting the products of their reactions.
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Alkene Metathesis Concept 1
mCPBA (meta-Chloroperbenzoic Acid)
mCPBA is a peracid commonly used in organic chemistry for the epoxidation of alkenes. It introduces an oxygen atom across the double bond, forming an epoxide, which is a three-membered cyclic ether. This reaction is stereospecific and can lead to different products depending on the substitution pattern of the alkene.
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02:48O,P-positions vs. Meta-Positions
Epoxidation
Epoxidation is a chemical reaction that converts alkenes into epoxides using oxidizing agents like mCPBA. The reaction involves the formation of a cyclic ether, which can further react under various conditions to yield diols or other functional groups. Understanding this transformation is essential for predicting the final products of alkene reactions with mCPBA.
Recommended video:
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02:19General properties of epoxidation.
Related Practice
Textbook Question
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.
(e)
4
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Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (ii) Cl2
(d)
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.
(e)
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: (v) mCPBA; (vi) 1. OsO4 2. NaHSO3.
(e)
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: (ix) H2, Pd/C; and (x) D2 , Pd/C.
(e)
1
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