What is the action of the following reagents on aniline?Acetic anhydride.

Acetic anhydride (CH3CO)2O is a reagent commonly used in organic chemistry for acetylation reactions. When it reacts with aniline (C6H5NH2), it undergoes an acetylation reaction, which results in the formation of N-acetylaniline. The reaction can be represented as follows:

C6H5NH2 + (CH3CO)2O → C6H5NHC(O)CH3 + CH3COOH

In this reaction, the acetyl group (CH3CO-) from acetic anhydride is transferred to the amino group (-NH2) of aniline, resulting in the substitution of a hydrogen atom with an acetyl group. The product, N-acetylaniline, is also known as acetanilide.

This reaction is often used in the synthesis of various organic compounds and is a common method for introducing acetyl groups into aromatic amines like aniline. The acetyl group can serve as a protecting group for the amino group or be further modified in subsequent reactions.