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Beilstein J. Org. Chem. 2024, 20, 1906–1913, doi:10.3762/bjoc.20.166
Graphical Abstract
Scheme 1: Pyridoindazolium salts known to date and obtained in the present work.
Scheme 2: Synthesis of S1–S3 salts using PIFA as an oxidant and the resonance structures demonstrating the el...
Figure 1: CV curves for salt S2 and corresponding amine A2 (left, Figure 1a) and salt S3 with and without diethyl malo...
Scheme 3: Redox-interconversion between diarylamines A1–A3 and N-arylpyridoindazoliums S1–S3.
Scheme 4: Electrochemical approach to pyridoindazolium salts.
Figure 2: CV curves for amine A1 without the lutidine additive (black curve) and after addition of 2 equiv (r...
Figure 3: Semi-differential CV curves for the mediators (TEMPO, bis(4-tert-butylphenyl)nitroxide and tris(4-b...
Figure 4: CV curves of bis(4-tert-butylphenyl)nitroxide (a) and TEMPO (b) with amine A3 and 2,6-lutidine adde...
Beilstein J. Org. Chem. 2023, 19, 566–574, doi:10.3762/bjoc.19.41
Scheme 1: Selected examples of the chiral ligands used for synthesis of the Ni(II)–Schiff base complexes.
Scheme 2: Synthesis of the chiral ligand L7 and its Ni(II) complexes with glycine, serine, dehydroalanine, an...
Figure 1: Fragment of the NOESY spectrum of the ʟ-(oBrCysNi)L7 complex indicating the correlation between the...
Figure 2: Low-gradient isosurfaces with low densities (blue color of the isosurface corresponds to the hydrog...
Figure 3: Saturated solutions of (GlyNi)L1 (left) and (GlyNi)L7 (right) in diethyl ether.
Figure 4: The CV curves observed for (GlyNi)L7 and (ΔAlaNi)L7 in the anodic and cathodic regions (Pt, CH3CN, ...
Beilstein J. Org. Chem. 2022, 18, 1166–1176, doi:10.3762/bjoc.18.121
Figure 1: Cyclic voltammograms obtained for complexes 1 (black), 2 (blue), 3 (green), 4 (red) (MeCN, 0.05 M Bu...
Scheme 1: Synthesis of complex 4.
Figure 2: Key correlations in the NOESY spectrum of complex (S)-4 and the corresponding characteristic fragme...
Scheme 2: Reductive three-membered ring-opening and follow-up chemical steps.
Figure 3: Correlations in the HMBC spectra of 6a and 6b and spin coupling constants in the 1H NMR spectrum of ...
Scheme 3: Electrochemically induced ring-opening followed by intramolecular cyclization.
Scheme 4: One-pot multistep approach to the cysteine derivatives.
Figure 4: Characteristic correlations in the NOESY spectra of diastereomeric complexes 10 and the correspondi...