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Beilstein J. Org. Chem. 2024, 20, 552–560, doi:10.3762/bjoc.20.47
Graphical Abstract
Scheme 1: Synthesis of compound 1 and N-acylated compounds 2a–c.
Figure 1: Absorption (1), fluorescence (2, λex = 410 nm) and fluorescence excitation (3, λfl = 465 nm) spectr...
Figure 2: Electronic absorption spectra of compound 2b in acetonitrile before (1) and after 15 s (2), 35 s (3...
Scheme 2: Photoisomerization of N-acylated ketoenamines 2a–c.
Figure 3: Molecular structure of O-acylated isomer 3b. Thermal ellipsoids are drawn at the 50% probability le...
Figure 4: Fragment of the molecular packing of compound 3b, showing π–π interactions in the crystalline state...
Figure 5: Absorption spectra of compound 2a in acetonitrile before (1) and after (2) the addition of Fe2+ (c2a...
Figure 6: Changes in the absorption intensity of compound 2a in acetonitrile at 520 nm after the addition of ...
Scheme 3: Sequential interaction of compounds 2a–c with Fe2+ and AcO−.
Figure 7: Job’s plot at the wavelength 429 nm, reflecting the interaction of compound 2a with Fe2+ in acetoni...
Figure 8: Fluorescence intensity of compound 2a upon alternate addition of Fe2+ and AcO−.