Question

Explain the following reactions (write only chemical equations): (i) Acetylation (ii) Friedel-Crafts reaction​

Answer 1

Answer:

i)Acetylation

Explanation:

Option no. i) is the right one

Answer 2

Acetylation and Friedel-crafts reaction

Explanation:

• Acetylation is a type of chemical reaction that involves the replacement of a hydrogen atom belonging to an alcohol group with an acetyl group.
• Example of Acetylation is reaction of salicylic acid with acetic anhydride to give acetylsalicylic acid (aspirin) and acetic acid.

• Reaction involved in acetylation is -  

        salicylic acid + acetic anhydride → acetylsalicylic acid + acetic acid  

• Friedel crafts reaction is a type of organic reaction which involves electrophilic aromatic substitution and used for attaching substituents to aromatic rings. It is of two types - alkylation and acylation reactions.
• Friedel Crafts alkylation involves addition of alkyl group to a aromatic ring by replacing aromatic proton.

               C₆H₆ + CH₃Cl  + AlCl₃ → C₆H₅CH₃

• Friedel Crafts Acylation involves replacement of aromatic proton with a acyl group.

              C₆H₆ + CH₃COCl + AlCl₃  →  C₆H₅COCH₃ + HCl