Domanda del libro di testo
What are the products of the following reactions?
b.
1134
views
Ch. 18 - Reactions of Benzene and Substituted Benzenes
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding31
- 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
Tutti i libri di testo
Bruice 8th EditionCh. 18 - Reactions of Benzene and Substituted BenzenesProblema 69
Bruice 8th EditionCh. 18 - Reactions of Benzene and Substituted BenzenesProblema 69Capitolo 18, Problema 69
Does m-xylene or p-xylene react more rapidly with Cl2 + FeCl3? Explain your answer.
Guida verificata passo dopo passo1
Step 1: Understand the reaction mechanism. The reaction between xylene and Cl₂ in the presence of FeCl₃ is an electrophilic aromatic substitution. FeCl₃ acts as a Lewis acid catalyst, generating the electrophile Cl⁺, which will attack the aromatic ring.
Step 2: Analyze the structure of m-xylene and p-xylene. Both are dimethylbenzene derivatives, but the positions of the methyl groups differ. In m-xylene, the methyl groups are located at the 1 and 3 positions, while in p-xylene, they are at the 1 and 4 positions.
Step 3: Consider the electron-donating effects of the methyl groups. Methyl groups are electron-donating via hyperconjugation and inductive effects, increasing the electron density of the aromatic ring. This makes the ring more reactive toward electrophilic attack. The positions of the methyl groups influence the distribution of electron density.
Step 4: Evaluate the steric hindrance. In m-xylene, the methyl groups are closer together, which can create steric hindrance and reduce the accessibility of certain positions on the ring for electrophilic attack. In p-xylene, the methyl groups are farther apart, reducing steric hindrance and making the ring more accessible for reaction.
Step 5: Conclude based on reactivity. Due to the reduced steric hindrance and more evenly distributed electron density, p-xylene reacts more rapidly with Cl₂ + FeCl₃ compared to m-xylene. The para position allows for easier electrophilic attack.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
3mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Electrophilic Aromatic Substitution
Electrophilic aromatic substitution (EAS) is a fundamental reaction mechanism in organic chemistry where an electrophile replaces a hydrogen atom on an aromatic ring. The reactivity of the aromatic compound is influenced by the substituents already present on the ring, which can either activate or deactivate the ring towards further substitution. Understanding EAS is crucial for predicting how different xylene isomers will react with electrophiles like Cl2 in the presence of a catalyst.
Video consigliato:
03:07
EAS Review
Substituent Effects
Substituent effects refer to how different groups attached to an aromatic ring influence its reactivity and orientation during electrophilic substitution reactions. Electron-donating groups (EDGs) enhance reactivity by stabilizing the positive charge in the intermediate, while electron-withdrawing groups (EWGs) decrease reactivity. In the case of m-xylene and p-xylene, the position of the methyl groups affects the electron density on the ring, thus impacting their reactivity with Cl2.
Video consigliato:
Percorso guidato
2:02Directing Effects in Substituted Pyrroles, Furans, and Thiophenes Concept 1
Steric Hindrance
Steric hindrance is the prevention of chemical reactions due to the spatial arrangement of atoms within a molecule. In the context of xylene isomers, the position of the methyl groups can create steric effects that influence how easily the electrophile can approach and react with the aromatic ring. For example, p-xylene may experience more steric hindrance compared to m-xylene, affecting the rate of reaction with Cl2 and FeCl3.
Video consigliato:
02:53Understanding steric effects.
Pratica correlata
Domanda del libro di testo
What are the products of the following reactions?
a.
1468
views
Domanda del libro di testo
A mixture of 0.10 mol benzene and 0.10 mol p-xylene was allowed to react with 0.10 mol nitronium ion until all the nitronium ion was gone. Two products were obtained: 0.002 mol of one and 0.098 mol of the other.
b. Why was more of one product obtained than of the other?
923
views
Domanda del libro di testo
b. Rank the same esters from most reactive to least reactive in the second slow step of a nucleophilic acyl substitution reaction (collapse of the tetrahedral intermediate).
1061
views
Domanda del libro di testo
a. Rank the following esters from most reactive to least reactive in the first slow step of a nucleophilic acyl substitution reaction (formation of the tetrahedral intermediate):
1265
views
Domanda del libro di testo
What are the products of the following reactions?
a.
1101
views