Abstract
A simple and effective method on the basis of Fischer reaction in polyphosphoric acid is proposed for the synthesis of previously unknown heterocyclic structures that contain the 5-chloro-1 Н -pyrrolo[2,3- b ]pyridine system. This method can be used for the synthesis of 3-substituted and 2,3-disubstituted 5-chloro-7-azaindoles with alkyl and aryl substituents. Authors: Roman S. Alekseev*, Sabina R. Amirova, Vladimir I. Terenin
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