Question

what are heteocyclic compounds? discuss the method of preparation and properties of pyrrole.
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Answer 1

Answer:

Explanation:

The product is a pyrrole with substituents at the 3 and 4 positions. The aldehyde reacts with the diamine to an intermediate di-imine (R–C=N−N=C–R). In the second step, a [3,3]-sigmatropic rearrangement takes place between. Addition of hydrochloric acid leads to ring closure and loss of ammonia to form the pyrrole.