Aromatic Compounds

Ch16 Aromatic Compounds (landscape).docx Page 4 Unusual Behavior of Benzene Benzene has much more stability than predicted by the simple resonance delocalized structure. For …

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Organic Reactions andOrganic Reactions and Their ...

polymer.zju.edu.cn

In a substitution reaction, a functional group in a particular chemical compound is replaced by another group. Reagent Substrate Reactive intermediate Type of organic substitution Nucleophilic Aliphatic Carbocation Aliphatic nucleophilic substitution Electrophilic Aromatic Carbanion Aromatic electrophilic substitution Free radical substitution

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Chapter 15: Benzene and Aromaticity

as.vanderbilt.edu

Benzene undergoes electrophilic substitution reactions (chapter 16) rather than electrophilic addition +BrBr Br Br Br +HBr Fe catalyst electrophilic addition electrophilic substitution Stability of Benzene: Heats of Hydrogenations + H 2 + 2 H 2 + 3 H 2 + 118 KJ/mol ... Aromatic ring C–H stretching at 3030 cm−1 and peaks from 1450 to 1600 cm−1

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Professor J. Stephen Clark

www.chem.gla.ac.uk

Pyridines – Electrophilic Reactions N αααα ββββ γγγγ N E N E E N E E E E −E Pathways for the Electrophilic Aromatic Substitution of Pyridines • The position of the equilibrium between the pyridine and pyridinium salt depends on the substitution pattern and nature of the substituents, but usually favours the salt

  Clark, Aromatic, Reactions, Professors, Stephen, Substitution, Electrophilic aromatic substitution, Electrophilic, Professor j, Stephen clark, Electrophilic reactions

Reactions of Benzene & Its Derivatives

colapret.cm.utexas.edu

Electrophilic Aromatic Substitution • Electrophilic aromatic substitution: a Electrophilic aromatic substitution: reaction in which a hydrogen atom of an aromatic ring is replaced by an electrophile • In this section: – several common types of electrophiles – how each is generated – the mechanism by which each replaces hydrogen + + H ...

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Reactions of Aromatic Compounds - Rutgers University

crab.rutgers.edu

Ch17 Reactions of Aromatic Compounds (landscape).docx Page3 Bromination of Benzene Bromination follows the same general mechanism for the electrophilic aromatic substitution …

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