question_answer

The reagent, used for protection of amino group during the nitration of aniline is:

A)  \[SOC{{l}_{2}}\]/pyridine            

B)         \[PC{{l}_{5}}\]                 

C)         acetic acid         

D)         acetic anhydride

Correct Answer: D

Solution :

Amino group can be easily protected by acetylation with acetic anhydride or acetyl chloride. The acetyl group may be easily hydrolyzed later to obtain back the amino group, e.g.,