Journal
RSC ADVANCES
Volume 9, Issue 60, Pages 35068-35072Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra07831b
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- Council of Scientific and Industrial Research (CSIR)
- CSIR
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Herein, we report a simple and metal-free protocol for the synthesis of 4-oxo-4,5-dihydro-3H-pyrrolo[2,3-c]quinolines. The present method under mild reaction conditions with wide functional group compatibility gives several unexplored N-substituted/unsubstituted 4-oxo-4,5-dihydro-3H-pyrrolo[2,3-c]quinolines and marinoquinolines in good to excellent yields. Mechanistic insights for the synthesis of N-substituted pyrroloquinolines reveal the ring expansion of 3-ylideneoxindoles and H-shift as the key steps.
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