Engineering
Chemistry
Electrophilic substitution
Friedel craft reaction
Question

Polysubstitution is a major drawback in

Friedel Craft's acylation

Reimer Tiemann reaction

Acetylation of aniline

Friedel Craft's alkylation

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Solution

Polysubstitution is a major drawback of Friedal craft’s alkylation. It is so because activating behaviour of benzene ring increases with increase in number of alkyl group on benzene ring.