Question

The compound having most basic nitrogen is:

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

In pyridine (option a), lone pair on nitrogen atom is available for donation.
In pyrrole (option b) lone pair on nitrogen is in delocalisation with the aromatic ring. Thus, it has the least tendency to donate electrons in all the given compounds. In case of Aniline (option c) lone pair in involved in conjugation. Hence, less readily available. In benzamide (option d), $N{H}_2$ group is directly attached to electron withdrawing carbonyl group,which withdraws lone pair on nitrogen. Thus, lone pair on nitrogen is less available for donation. Hence, benzamide is less basic than aniline.