Question

Why ortho positionof pyrrole is preferred for electrophilic substituition reaction?

Answer 1

Answer:

Ortho position of pyrrole is preferred for electrophilic substitution as the protonated pyrrole intermediate is stabilised by resonance.

Answer 2

AnSwEr:-

$\longrightarrow$ And pyrrole, furan, and thiophene are all more reactive than benzene with EAS because the lone pair on the heteroatom can donate electron density into the ring by resonance, thus stabilizing the carbocation intermediate more effectively.