Slides in this set

Slide 1

Preview of page 1

Organic Chemistry Revision
Aromatic Chemistry…read more

Slide 2

Preview of page 2

· Carbon atoms are joined by single bonds with
delocalised electrons
· All bonds are same length ­ all equal
· More stable than the Kekule model
· When hydrogenated reaction is less exothermic than
expected ­ so more energy must have been put in to
break the bonds
Kekule Structure: Benzene(Delocalised Model):…read more

Slide 3

Preview of page 3

Electrophilic Substitution
General Mechanism:…read more

Slide 4

Preview of page 4

Nitration of Benzene
· Electrophile is made by mixing conc nitric acid and conc
sulphuric acid. Nitrobenzene is made by gentle reflux at
500C to prevent further substitution and with conc
sulphuric acid as a catalyst.
· HNO3 + 2H2SO4 NO2+ + H3O+ + 2HSO4-
· C6H6 + NO2+ C6H5NO2 + H+…read more

Slide 5

Preview of page 5

Acylation of Benzene
· Electrophile is made by:
· [AlCl4]+ + H+ AlCl3 + HCl
· PhenylRanone is made by reacting benzene and an acyl chloride with an
aluminium catalyst, heated and refluxed.
· C6H6 + CH3COCl C6H5 COCH3 + HCl
Mechanism:…read more


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »