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Beilstein J. Org. Chem. 2021, 17, 678–687, doi:10.3762/bjoc.17.57
Graphical Abstract
Figure 1: Benzodiazepine-based azolo-containing drugs.
Figure 2: Novel potential 1,2,3-triazolobenziadiazepine drugs.
Scheme 1: Examples of synthesis of 1,2,3-triazolobenzodiazepines via tandem approach Ugi reaction/IAAC. Reage...
Scheme 2: Azide precursor synthesis.
Scheme 3: Synthesis of Ugi products 6, their structures and yields.
Figure 3: Code legend for Ugi products 6 and molecular structure (X-ray analysis) of compound 6aaa.
Scheme 4: Cyclization of Ugi-product 6aab with terminal alkyne fragment.
Figure 4: 1H NMR spectra of the reactant and the product of IAAC.
Figure 5: Molecular structure of compound 7aaa (X-ray analysis) and comparison of 1H NMR spectra of compounds ...
Scheme 5: The substrate scope of intermolecular cycloaddition.