ELECTROPHILIC SUBSTITUTION MECHANISMS MENU

What is electrophilic substitution? . . .

Some background on benzene (including links to more detailed discussions) and a general mechanism which covers several of benzene's reactions.

The nitration of benzene . . .

The mechanism for the formation of nitrobenzene from benzene.

The Friedel-Crafts acylation of benzene . . .

The mechanism for the substitution of an acyl group such as CH3CO into benzene.

The Friedel-Crafts alkylation of benzene . . .

The mechanism for the substitution of an alkyl group such as CH3 into benzene.

An industrial alkylation of benzene . . .

The mechanism for the substitution of an alkyl group such as CH3CH2 into benzene, by a reaction involving an alkene such as ethene.

The halogenation of benzene . . .

The mechanism for the substitution of atoms like chlorine and bromine into benzene rings.

The sulphonation of benzene . . .

The mechanism for reaction between benzene and concentrated sulphuric acid to produce benzenesulphonic acid

Some substitution reactions of methylbenzene . . .

Illustrates how to cope with the problem of substituting things into rings which already have something else attached.

 

 

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properties and reactions of arenes (aromatic hydrocarbons). . .

Covers all the physical and chemical properties of arenes like benzene and methylbenzene required by UK A level syllabuses.