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Beilstein J. Org. Chem. 2016, 12, 2204–2210, doi:10.3762/bjoc.12.211
Graphical Abstract
Scheme 1: Polycyclic scaffolds derived from [3 + 2] adducts 2.
Figure 1: Heterocyclic fragments in bioactive compounds.
Figure 2: One-pot double [3 + 2] cycloadditions and denitrogenation for product 7 under the optimized reactio...
Figure 3: X-ray structure of 7h.
Scheme 2: Proposed mechanism for the 2nd [3 + 2] cycloaddition and denitrogenation.
Figure 4: [5 + 1] Annulation for tetrahydroquinazolines 1.