Microwave initiated intramolecular cyclizations of in situformedazomethine ylide with allylamino group at substitutedthiophene

Synthesis of new pyrrolo[3,2-c]pyridine heterocycles by microwave induced cycloaddition reaction. The reaction is proceeding in two subsequent steps. The first is intermolecular reaction of secondary amine with carbonyl moiety forming an intermediate. In the second step the intermediate undergo intramolecular cycloaddition.