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Preparation of tricyclic nitrogen heterocycle via Intramolecular Diels-Alder reaction
journal contributionposted on 2023-06-07, 23:14 authored by Aydin Demircan, Philip J Parsons
Preparation of rigid tricyclic nitrogen heterocycles under radicalic condition has been studied. Cyclisation is performed by Diels-Alder ring closure after radicalic hydrogenation. We did not observe any radicalic Cycloaddition / Fragmentation product 12. Tri-n-butyltin hydride (TBTH) and azobisisobutyronitrile were used in toluene or benzene to generate radicalic condition. Intramolecular Diels-Alder (IMDA) reaction on substituted furan species gave tricyclic heterocycle.
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