Textbook Question
Predict the product(s) of the following nucleophilic aromatic substitution reactions occurring by the benzyne mechanism.
(b)
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Ch. 23 - Benzene I: Aromatic Stability and Substitution Reactions
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
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Mullins 1st EditionCh. 23 - Benzene I: Aromatic Stability and Substitution ReactionsProblem 57a
Mullins 1st EditionCh. 23 - Benzene I: Aromatic Stability and Substitution ReactionsProblem 57aChapter 22, Problem 57a
Predict the products of the following reactions.
(a) 
Verified step by step guidance1
Identify the starting material: The given compound is a brominated aniline derivative with a methyl group on the benzene ring.
Recognize the reaction type: The reaction involves diazotization followed by a substitution reaction. The first step uses NaNO2 and HCl to convert the amine group (NH2) into a diazonium salt.
Write the diazotization reaction: The amine group reacts with NaNO2 and HCl to form an aryl diazonium ion (N2+), releasing water as a byproduct.
Consider the substitution step: The diazonium ion is highly reactive and can be replaced by other nucleophiles. In this case, KI is used to replace the diazonium group with an iodine atom.
Predict the final product: The final product will have the iodine atom in place of the original amine group, while the bromine and methyl groups remain unchanged on the benzene ring.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Aromatic Substitution Reactions
Aromatic substitution reactions involve the replacement of a hydrogen atom in an aromatic ring with another substituent. These reactions typically occur via electrophilic aromatic substitution (EAS), where an electrophile attacks the electron-rich aromatic system. Understanding the mechanism of EAS is crucial for predicting the products of reactions involving aromatic compounds.
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Intro to Aromaticity
Diazotization
Diazotization is a process where primary amines are converted into diazonium salts using nitrous acid (generated from sodium nitrite and hydrochloric acid). This reaction is significant in organic synthesis as diazonium salts can undergo further reactions, such as nucleophilic substitution, to form various aromatic compounds. Recognizing the role of diazonium intermediates is essential for predicting the final products.
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06:59Replacement Reactions
Nucleophilic Substitution
Nucleophilic substitution is a reaction where a nucleophile replaces a leaving group in a molecule. In the context of the provided reaction, the iodide ion (from KI) acts as a nucleophile that replaces the bromine atom in the diazonium compound. Understanding the conditions and mechanisms of nucleophilic substitution helps in predicting the outcome of reactions involving halogenated aromatic compounds.
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01:47Nucleophiles and Electrophiles can react in Substitution Reactions.
Related Practice
Textbook Question
Predict the products of the following nucleophilic aromatic substitution reactions.
(c)
1
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Textbook Question
Predict the products of the following reactions.
(a)
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Textbook Question
Conversion of t-butylbenzene to a phenol results in two products when the reaction occurs through the benzyne mechanism. Devise a sequence involving a diazonium ion in which only one phenol product is produced.
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Textbook Question
Assume that Ha is the proton removed in the first step of the benzyne mechanism with p-chlorotoluene. Draw the benzyne intermediate and identify the two products that will result.
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Textbook Question
Predict the products of the following reactions.
(b)
2
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