Question

Pyridine on heating with nitrating mixture gives....​

Answer 1

Because of the electronegative nitrogen in the pyridine ring , the molecule is relatively electron deficient. It, therefore, enters less readily into electrophilic aromatic substitution reactions than benzene derivatives.

Answer 2

Pyridine on heating with nitrating mixture gives N nitropyridinium nitrate

Explanation:

• Pyridine is a heterocyclic compound with a chemical formula of $C5H5N$

• Due to the presence of electronegative nitrogen in the pyridine ring the  molecule becomes electron deficient.

• Here electrophillc substitution reaction takes place.

• Pyridine compounds  on nitration  with nitric acid in trifluoro acetic acid gives N nitropyridinium nitrate.
• The reaction takes place on chilled ice bath.
• The yield is about 83% which is a good yield.