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
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Slide1
Chapter 4: Aromatic Compounds
Bitter almonds are the source of the aromatic compound benzaldehydeSlide2
Sources of BenzeneSlide3
Some Facts About Benzene
Reacts mainly by substitutionSlide4
Friedrich August Kekule’Slide5
The Orbital Model for Benzene
Symbols for BenzeneSlide6
Nomenclature of Aromatic Compounds
Monosubstituted benzenes with common namesSlide7
Monosubstituted benzenes that do not have common namesSlide8
When two substituents are present, we use prefixes
ortho-
,
meta-
, and
para-,
usually abbreviated as o-, m-, and p-, respectively.Slide9Slide10
For more than two substituents, their positions are designated by numbering the ring.Slide11
Aromatic hydrocarbons, as a class called Arenes (Ar) the aryl groups are therefore aromatic substituents.Slide12
The symbol Ph is sometimes used as an abbreviation for phenyl groupSlide13
Name the following structuresSlide14
Electrophilic Aromatic SubstitutionSlide15Slide16Slide17Slide18
The Mechanisms of Electrophilic SubstitutionsSlide19Slide20Slide21Slide22Slide23
NitrationSlide24Slide25
sulfonationSlide26
Alkylation and Acylation (Friedel-Crafts reaction)Slide27Slide28
Ring-Activating and ring-Deactivating SubstituentsSlide29Slide30
Ortho
,
Para-Directing and Meta-Directing GroupsSlide31Slide32
Ortho
,
Para-Directing GroupsSlide33Slide34Slide35Slide36Slide37Slide38Slide39Slide40
Importance of Directing Effects in SynthesisSlide41Slide42
Polycyclic Aromatic HydrocarbonsSlide43Slide44
Fused polycyclic hydrocarbonsSlide45Slide46Slide47