CD - Arenes and Aromatic Molecules Flashcards
what are arenes?
aromatic compounds that contain only C and H
also known as aromatic hydrocarbons
they contain rings stabilised by electron delocalisation
they are unsaturated - arENEs
what are aromatic compounds?
molecule containing a benzene ring
what are the condition of bromination of benzene?
HUR and room temp and catalyst made ‘in situ’
what type of reaction is bromination of benzene?
electrophilic substitution
bromination of benzene mechanism:
- generation of catalyst ‘in situ’
- generation of electrophile
- electrophile attacks benzene
- regenerate catalyst
draw it out
what are the conditions for the chlorination of benzene?
room temp
AlCl3 (anhydrous conditions required)
alcl3 will violently react with water
what type of reaction is the chlorination of benzene?
electrophilic substitution
chlorination of benzene mechanism:
- generation of electrophile
- electrophile atacks benzene
- regeneration of catalyst
draw it out
what are the conditions for Freidel-Crafts Acylation?
AlCl3 (anhydrous conditions requires as it will react violently with H2O)
what type of reaction id Freidel-Crafts acyation?
electrophilic substitution
Freidel-Crafts acylation mechanism:
- generate electrophile
- electrophile reacts with benzene
- regeneration of catalyst
draw it out
what are the conditions for Freidel-Crafts Alkylation?
reflux
AlCl3 (anhydrous conditions required)
what typre of reaction is Freidel-Crafts alkylation?
electrophilic substitution
Freidel-Crafts alkylation mechanism:
- generate electrophile
- electrophile reacts with benzene
- regenerate catalyst
draw it out
what is the importance of Freidel-Crafts reactions?
they provide a way of adding carbon atoms to the benzene ring building up side chains
