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Beilstein J. Org. Chem. 2025, 21, 915–925, doi:10.3762/bjoc.21.74
Graphical Abstract
Figure 1: Representative diazepine-fused heterocycles.
Scheme 1: Post-Ugi synthesis of benzodiazepines and heteroaryl-fused diazepines.
Scheme 2: Synthesis of pyrazole-tethered propargylamides 15 via U4CR. Conditions: Unless otherwise specified,...
Scheme 3: Scope of the silver(I) triflate-catalyzed synthesis of pyrazolo[1,5-a][1,4]diazepines. Conditions: ...
Scheme 4: Telescope procedure for the synthesis of 16a.
Scheme 5: Tentative mechanism for the silver-catalyzed heteroannulation.
Scheme 6: Reductive post-assembly modifications of the pyrazolo[1,5-a][1,4]diazepine core. aDetermined by 1H ...
Beilstein J. Org. Chem. 2020, 16, 1963–1973, doi:10.3762/bjoc.16.163
Scheme 1: Post-transformations of 2-oxo-aldehyde-derived Ugi adducts 8.
Scheme 2: Synthesis of 2-oxo-aldehyde-derived Ugi adducts.
Figure 1: Molecular representation of the X-ray crystal structure of (S)-12e (slow enantiomer).