Question

which among the following is more basic? a) pyrimidine b) piperidine c) pyrole d) furan​

Answer 1

Pyridine>Aniline>Pyrrole

In (I), lone pair of N is not in delocalisation of π  

e

ˉ

.

In (II) and (III), lone pair of N is used in deloalisation of π  

e

ˉ

.

But in (III), LP  

e

ˉ

 

′

s on N are involved in aromaticity, so it is less basic than (II).

Answer 2

Answer:

A. Furan is more basic than pyrimidine, piperidine and pyrole