Benzene can be conveniently converted into n–propyl benzene by
Friedel – Craft alkylation with n–propyl chloride
Friedel – Craft acylation with propionyl chloride followed by Wolff – Kishner reduction
Friedel – Craft acylation with propionyl chloride followed by catalytic hydrogenation
Friedel – Craft acylation with propionyl chloride followed by reduction with LiAlH4