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Two-pot sequential multicomponent metal-free synthesis of pyrrolo[2,3-d]pyridazin-7-ones and pyrrolo[2,3-d]pyrizidines†
Mamta,Nisar A. Mir,Jyothi Yadav,Amol Prakash Pawar,Ratika Sharma,Rajni Kant,Krishnan Rangan,Eldhose Iype,Bharti Khungar,Indresh Kumar
New Journal of Chemistry Pub Date : 07/06/2023 00:00:00 , DOI:10.1039/D3NJ02249H
Abstract

Metal-free rapid access to pyrrole-2,3-dione has been developed under mild conditions from easily available materials, which was utilized to synthesize pyrrolo[2,3-d]pyridazin-7-one's and pyrrolo[2,3-d]pyrizidines. The overall two-pot process proceeds through (i) the first pot, metal-free direct Mannich reaction-oxidative aromatization of succinaldehyde with C-acyl imine in situ generated to pyrrole-2,3-dione, and (ii) the second pot, further condensation with various hydrazines to synthesize several pyrrolo-pyrizidinones and pyrrolo-pyrizidines in moderate to good yields.

Graphical abstract: Two-pot sequential multicomponent metal-free synthesis of pyrrolo[2,3-d]pyridazin-7-ones and pyrrolo[2,3-d]pyrizidines
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