Question

How benzene is converted into n - propyl benzene

• A. Friedel - crafts Alkylation
• B. Friedel - crafts Acylation
• C. Friedel - crafts Alkylation followed by clemmensen reduction
• D. Friedal - crafts Acylation followed by clemmensen reduction

Answer 1

Answer: (D)

Friedel crafts acylation followed by

clemmensen reduction forms $n$-propyl benzene as follows :



Friedel craft alkylation method can also be used for conversion of benzene to n-propyl benzene. But the electrophile formed in $F.C$ acylation method is more electrophilic in nature

than the electrophile $(C{H}_{3}C{H}_2\stackrel{\oplus }{C}{H}_2)$ formed in $F.C$ alkylation method.

Hence, $F.C$ acylation followed by clemmensen reduction is more preferrable.