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Why furan is more reactive than pyrrole and thiophene?

Why furan is more reactive than pyrrole and thiophene?

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
I think that your question seems to be incorrect.
 
These compounds Furan,Pyrrole and thiophene are certainly more reactive than Benzene.Out of these, Pyrrole being most aromatic,followed by Furan.Furan is comparatively less reactive because O-atom (in furan )can accommodate accommodate​ a positive charge less readily at N-atom (in Pyrrole).
Thiophene is being followed by these two and is least reactive. It is so bcoz +M-effect of sulphur is weaker than that of oxygen bcoz overlap of 2p-orbitals of carbon and 3-p orbitals of sulphur is less than 2p -orbitals of C and O -atoms.
That's why order of reactivity is something like that
Pyrrole>Furan> Thiophene>Benzene.

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