In case of substituted aniline, it
is observed that electron releasing groups like –OCH3, –CH3 increase
basic strength whereas electron withdrawing groups like  –NO2, –SO3H,
–COOH, –X decrease it Rationalised 2023-24
270
Chemistry
2 Alkylation
Amines undergo alkylation on reaction with alkyl halides (refer Unit
6, Class XII) 3