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Beilstein J. Org. Chem. 2021, 17, 2799–2811, doi:10.3762/bjoc.17.191
Graphical Abstract
Figure 1: Examples of structures and properties of Schiff bases of interest in the present study.
Scheme 1: General view for the present study.
Scheme 2: Synthesis of ((trifluoromethyl)quinolinyl)phenol Schiff bases 3aa–fa.
Scheme 3: Synthesis of trifluoromethylated quinolinyl-phenol Schiff bases 3bb–be.
Figure 2: ORTEP diagram of the crystal structure of (E)-2-(((2-phenyl-4-(trifluoromethyl)quinolin-6-yl)imino)...
Figure 3: Normalized absorption spectra in the UV–vis region of compounds (a) 3ea and (b) 3be in CHCl3, MeOH ...
Figure 4: Normalized steady-state fluorescence emission spectra of compound 3aa (R = Ph, R1 = H) in CHCl3 (bl...
Figure 5: Comparative normalized steady-state fluorescence emission spectra of compounds 3bb and 3be in the t...
Figure 6: Photostability (%) plots of derivatives 3aa–fa and 3bb–be in DMSO solution after irradiation with w...
Figure 7: DPBF photooxidation assays by red-light irradiation with diode laser (λ = 660 nm) in the presence o...
Beilstein J. Org. Chem. 2017, 13, 2396–2407, doi:10.3762/bjoc.13.237
Figure 1: Hydrogen coupling constants (3JH-H) of (a) H6–H7 for 3a and (b) H5–H6 for 5h.
Figure 2: LUMO coefficients for (a) β-enaminones 1a,h, and their (b) conjugated acids.
Figure 3: (a) 1H and (b) 13C NMR spectra demonstrating the 3d4d equilibrium in DMSO-d6 at 25 °C.
Figure 4: ORTEP® [45] plot of 7a with thermal ellipsoids drawn at 50% probability level.
Figure 5: Tetrazolo[1,5-a]pyrimidine observed in solution (CDCl3 and DMSO-d6) and 2-azidopyrimidine observed ...
Figure 6: ORTEP® [45] plot of 8i with thermal ellipsoids drawn at 50% probability level.
Figure 7: Representation of the possible equilibrium existing between 6i, 7i, and 8i.
Beilstein J. Org. Chem. 2017, 13, 257–266, doi:10.3762/bjoc.13.29
Scheme 1: Mechanism proposed for the formation of compound 5.
Scheme 2: Mechanism proposed for the formation of compound 9a.
Figure 1: ORTEP plot of 6, 9c, and 12g with the thermal ellipsoids drawn at the following probability levels:...