Synthesis of a fused N-bridged [3.3.1]nonadiquinoline multicyclic skeleton via a metal-free formal [4 + 2] cycloaddition/Mannich/dearomatization domino reaction
Green Chemistry, ISSN: 1463-9270, Vol: 25, Issue: 22, Page: 9203-9208
2023
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Article Description
We present a novel green synthetic protocol for the construction of a broad range of substituted fused azabicyclo[3.3.1]nonadiquinoline scaffolds through a formic acid catalyzed formal [4 + 2] annulation/Mannich/dearomatization domino reaction. This unified strategy shows a broad substrate scope with high functional group tolerance, resulting in good to high yields under environmentally benign, transition-metal-free, low-cost, and operationally simple conditions. The current method outperforms existing methods in terms of green and sustainable conditions. The reaction mechanism was confirmed based on DFT calculations.
Bibliographic Details
Royal Society of Chemistry (RSC)
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