Textbook Question
Each of the following reactions has two nucleophiles that could add to the intermediate formed by the reaction of the alkene with an electrophile. What is the major product of each reaction?
c.
1
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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 24
Bruice 8th EditionCh. 6 - The Reactions of Alkenes • The Stereochemistry of Addition ReactionsProblem 24Chapter 7, Problem 24
What is the product of the addition of I—Cl to 1-butene? (Hint: Chlorine is more electronegative than iodine [Table 1.3].)
Verified step by step guidance1
Step 1: Analyze the structure of 1-butene. It is an alkene with the molecular formula C4H8, containing a double bond between the first and second carbon atoms.
Step 2: Understand the addition of I-Cl to the double bond. This reaction is an electrophilic addition, where the more electronegative atom (Cl) will act as the nucleophile and the less electronegative atom (I) will act as the electrophile.
Step 3: Refer to the electronegativity values in the provided table. Chlorine has an electronegativity of 3.0, while iodine has an electronegativity of 2.5. This confirms that chlorine is more electronegative than iodine.
Step 4: During the reaction, the π electrons of the double bond attack the iodine atom (the electrophile), forming a carbocation intermediate. Chlorine then attaches to the carbocation, completing the addition reaction.
Step 5: The product of the reaction will be a halogenated alkane, where iodine is attached to the first carbon and chlorine is attached to the second carbon of the original double bond.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Electrophilic Addition
Electrophilic addition is a fundamental reaction mechanism in organic chemistry where an electrophile reacts with a nucleophile, typically involving alkenes. In this process, the double bond of the alkene acts as a nucleophile, attacking the electrophile, leading to the formation of a more stable product. Understanding this mechanism is crucial for predicting the products of reactions involving alkenes.
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Regioselectivity
Regioselectivity refers to the preference of a chemical reaction to yield one structural isomer over others when multiple products are possible. In the case of the addition of I—Cl to 1-butene, the regioselectivity is influenced by the relative electronegativities of chlorine and iodine, which affects how the addition occurs across the double bond. This concept is essential for determining the major product in addition reactions.
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Electronegativity
Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond. In the context of the addition of I—Cl to 1-butene, chlorine's higher electronegativity compared to iodine means that chlorine will preferentially bond with the more electron-rich carbon atom of the alkene. This property is key to understanding the distribution of products formed during the reaction.
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Related Practice
Textbook Question
Each of the following reactions has two nucleophiles that could add to the intermediate formed by the reaction of the alkene with an electrophile. What is the major product of each reaction?
a.
1
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Textbook Question
Draw structures for the following:
a. 2-propyloxirane
b. cyclohexene oxide
5
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Textbook Question
What will be the major product obtained from the reaction of Br2 with 1-butene if the reaction is carried out in
a. dichloromethane?
b. water?
1
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Textbook Question
What will be the major product obtained from the reaction of Br2 with 1-butene if the reaction is carried out in
c. ethyl alcohol?
d. methyl alcohol?
1
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Textbook Question
Each of the following reactions has two nucleophiles that could add to the intermediate formed by the reaction of the alkene with an electrophile. What is the major product of each reaction?
b.
2
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