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Beilstein J. Org. Chem. 2020, 16, 2920–2928, doi:10.3762/bjoc.16.241
Graphical Abstract
Figure 1: Representative biologically active N-(hetero)aryl-4,5-unsubstituted pyrrole scaffolds.
Scheme 1: Typical routes to N-(heteroaryl)-4,5-unsubstituted pyrroles.
Scheme 2: Substrate scope of the pyrrole synthesis.
Scheme 3: Synthesis of N-heterocyclic pyrroles.
Scheme 4: Direct synthesis of pyrrole-3-carboxamide derivatives.
Scheme 5: Plausible mechanism of the three-component reaction.
Scheme 6: Synthesis of polysubstituted pyrazolo[3,4-b]pyridine derivatives.