Mani S, Raju R, Raghunathan R, Arumugam N, Almansour AI, Kumar RS, Perumal K. Environmentally friendly domino multicomponent strategy for the synthesis of pyrroloquinolinone hybrid heterocycles.
RSC Adv 2022;
12:15440-15446. [PMID:
35685174 PMCID:
PMC9131013 DOI:
10.1039/d2ra02851d]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 05/13/2022] [Indexed: 11/21/2022] Open
Abstract
An efficient and elegant assembly of pyrene/aryl fused pyrrolo[2,3-b]quinolinone and pyrrolizino[3,2-b]quinolinone hybrid heterocycles was achieved via a domino multicomponent reaction strategy using a solid state melt reaction (SSMR) condition. The 1,3-dipole component was generated in situ from N-methylgylcine/l-proline and isatin, while the Baylis-Hillman adduct prepared from pyrene-1-carbaldehyde and various benzaldehydes is used as the dipolarophile. The domino protocol comprises 1,3-dipolar cycloaddition and a consequent double annulation reaction process. The advantages of this cascade protocol include environmentally friendly conditions, the avoidance of toxic organic solvents, simple work-up and good to excellent product yields.
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