Study Set Content:
are generally nonpolar and immiscible with water.
Aromatic compounds
are often unreactive, useful for solvents for other nonpolar compounds
Aromatic compounds
Due to their high ratio of carbon to hydrogen, aromatic compounds are are characterized by a
sooty yellow flame
has eight fewer hydrogens than the corresponding six carbon alkane and is clearly unsaturated
benzene
less reactive than alkanes because of their resonance
benzene
Cyclohexane reacts rapidly with Br2 and gives the addition product
1,2- dibromocyclohexane
but benzene reacts slowly with Br2 and gives the substitution product
C6H5Br
the two benzene resonance forms can be represented by a single structure with
a circle in the center to indicate the equivalence of the carbon-carbon bonds
Who made Huckel's rule
Erich Huckel
states that if a molecule can be aromatic only if:
It has a planar, monocyclic system of conjugation
It contains a total of 4n+2p molecules where n is the integer n=0,1,2,3,4,5
In other words Molecules with what p electrons can be aromatic
2,6,10,14,18
Planar conjugate molecules with 4np electrons
Antiaromatic
Antiaromatic
4,8,12,16
The most common reactions of aromatic compounds
Electrophilic Aromatic Substitution Reactions: Bromination
It is a process in which an electrophile reacts with an aromatic ring and substitutes for the hydrogen
Electrophilic Aromatic Substitution Reactions: Bromination
Halogenation
Nitration
Sulfonation
Alkylation
Acylation
