Novel and efficient synthesis of 4,7-dihydro-1H-pyrrolo[2,3-b]pyridine derivatives via one-pot, three-component approach from N-substituted 5-amino-3-cyanopyrroles, various carbonyl and active methylene compounds-Science-Chemical Encyclopedia-lookchem

Novel and efficient synthesis of 4,7-dihydro-1H-pyrrolo[2,3-b]pyridine derivatives via one-pot, three-component approach from N-substituted 5-amino-3-cyanopyrroles, various carbonyl and active methylene compounds
Add time:08/14/2019 Source:sciencedirect.com

An efficient route to novel 4,7-dihydro-1H-pyrrolo[2,3-b]pyridines with incorporated tetrahedral fragment in the position-4 via three-component reaction of N-substituted 5-amino-3-cyanopyrroles, various carbonyl and active methylene compounds has been developed. In the same time, by using developed methods here, the 4,7-dihydro-1H-pyrrolo[2,3-b]pyridines with fused 4-spiro-frameworks were synthesized starting from isatins and a set of 1,2-dicarbonyl compounds. The reactions were carried out under mild conditions using ethanol, acetic acid or 1,4-dioxane as solvent.

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