Chapter 4: Aromatic Compounds

Chapter 4: Aromatic Compounds Chapter 4: Aromatic Compounds - Start

2016-06-19 165K 165 0 0

Chapter 4: Aromatic Compounds - Description

Bitter almonds are the source of the aromatic compound benzaldehyde. Sources of Benzene. Some Facts About Benzene. Reacts mainly by substitution. Friedrich August Kekule’. The Orbital Model for Benzene. ID: 369079 Download Presentation

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Chapter 4: Aromatic Compounds




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Presentations text content in Chapter 4: Aromatic Compounds

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Chapter 4: Aromatic Compounds

Bitter almonds are the source of the aromatic compound benzaldehyde

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Sources of Benzene

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Some Facts About Benzene

Reacts mainly by substitution

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Friedrich August Kekule’

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The Orbital Model for Benzene

Symbols for Benzene

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Nomenclature of Aromatic Compounds

Monosubstituted benzenes with common names

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Monosubstituted benzenes that do not have common names

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When two substituents are present, we use prefixes

ortho-

,

meta-

, and

para-,

usually abbreviated as o-, m-, and p-, respectively.

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For more than two substituents, their positions are designated by numbering the ring.

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Aromatic hydrocarbons, as a class called Arenes (Ar) the aryl groups are therefore aromatic substituents.

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The symbol Ph is sometimes used as an abbreviation for phenyl group

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Name the following structures

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Electrophilic Aromatic Substitution

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The Mechanisms of Electrophilic Substitutions

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Nitration

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sulfonation

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Alkylation and Acylation (Friedel-Crafts reaction)

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Ring-Activating and ring-Deactivating Substituents

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Ortho

,

Para

-Directing and

Meta

-Directing Groups

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Ortho

,

Para

-Directing Groups

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Importance of Directing Effects in Synthesis

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Polycyclic Aromatic Hydrocarbons

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Fused polycyclic hydrocarbons

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