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Environmentally friendly domino multicomponent strategy for the synthesis of pyrroloquinolinone hybrid heterocycles†
Suresh Mani,Rajesh Raju,Raghavacharry Raghunathan,Natarajan Arumugam,Abdulrahman I. Almansour,Raju Suresh Kumar,Karthikeyan Perumal
RSC Advances Pub Date : 05/25/2022 00:00:00 , DOI:10.1039/D2RA02851D
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.

Graphical abstract: Environmentally friendly domino multicomponent strategy for the synthesis of pyrroloquinolinone hybrid heterocycles
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