Advertisements
Advertisements
प्रश्न
Give reasons for the following observation:
Aniline is acetylated before nitration reaction.
Advertisements
उत्तर
Aniline is acetylated, before the nitration reaction in order to avoid the formation of tarry oxidation products and protect the amino group, so that p-nitro derivative can be obtained as major product.
APPEARS IN
संबंधित प्रश्न
What is the action of the following reagents on aniline?
Bromine water
Write the structures of main products when aniline reacts with the following reagents :
(CH3CO)2O/pyridine
Account for the following:
Although the amino group is o, p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.
Illustrate the following reactions giving suitable example in each case
Acetylation of amines
In the nitration of benzene using a mixture of conc. \[\ce{H2SO4}\] and conc. \[\ce{HNO3}\], the species which initiates the reaction is ______.
What is the role of \[\ce{HNO3}\] in the nitrating mixture used for nitration of benzene?
Assertion: N, N-Diethylbenzene sulphonamide is insoluble in alkali.
Reason: Sulphonyl group attached to nitrogen atom is strong electron-withdrawing group.
When bromination of aniline is carried out by protecting – NH2. The major product is
How can the activating effect of the −NH2 group in aniline be controlled?
Aniline does not give Friedel-Crafts reaction. Give a reason.
