Elucidating the Mechanism of Coumarin Homodimerization Using 3-Acetylcoumarin Derivatives.

Authors: Simeonova, Kristina B.¹ (AUTHOR) ohks@chem.uni-sofia.bg, Koleva, Ana I.¹ (AUTHOR) ohak@chem.uni-sofia.bg, Petkova-Yankova, Nevena I.¹ (AUTHOR) nipetkova@chem.uni-sofia.bg, Zlatanova, Anna-Mariya R.¹ (AUTHOR) an.zlatanova@gmail.com, Lozanova, Vesela² (AUTHOR) vlozanova@medfac.mu-sofia.bg, Nikolova, Rositca D.¹ (AUTHOR) rnikolova@chem.uni-sofia.bg, Petkov, Petko St.¹ (AUTHOR) ppetkov@chem.uni-sofia.bg

Source: Molecules. Feb2025, Vol. 30 Issue 3, p651. 19p.

Subject Terms: *RADICALS (Chemistry), *DENSITY functional theory, *COUMARINS, *ULTRASONIC imaging, *MOIETIES (Chemistry)

(R/S)-Ethyl 2-Acetoxy-4-phenyl-4 H -chromene-3-carboxylate.

Authors: Petkova-Yankova, Nevena I.¹ (AUTHOR) nipetkova@chem.uni-sofia.bg, Koleva, Ana I.¹ (AUTHOR), Nikolova, Rositca D.¹ (AUTHOR) nipetkova@chem.uni-sofia.bg

Source: Molbank. Sep2024, Vol. 2024 Issue 3, pM1875. 5p.

Subject Terms: *STERIC hindrance, *COUMARINS, *ESTERS, *ACCOUNTING

3-((λ 3 -Oxidanylidene)(propylamino)methyl)-2-ethoxybenzo[e]-[1,2]oxaphosphinine-2-oxide.

Authors: Koleva, Ana I.¹ (AUTHOR) ohak@chem.uni-sofia.bg, Petkova-Yankova, Nevena I.¹ (AUTHOR) nipetkova@chem.uni-sofia.bg, Nikolova, Rositca D.¹ (AUTHOR) nipetkova@chem.uni-sofia.bg

Source: Molbank. Sep2024, Vol. 2024 Issue 3, pM1870. 6p.

Subject Terms: *ISOMERIZATION, *SONICATION, *ULTRASONIC imaging, *ALKENES, *IRRADIATION

Efficient Synthesis of Fluorescent Coumarins and Phosphorous-Containing Coumarin-Type Heterocycles via Palladium Catalyzed Cross-Coupling Reactions.

Authors: Lyapchev, Rumen¹ (AUTHOR), Koleva, Ana I.¹ (AUTHOR) ohak@chem.uni-sofia.bg, Koleva, Iskra Z.¹ (AUTHOR), Subev, Kristian¹ (AUTHOR), Madzharova, Ivelina¹ (AUTHOR), Simeonova, Kristina B.¹ (AUTHOR), Petkova-Yankova, Nevena¹ (AUTHOR), Morgenstern, Bernd² (AUTHOR), Lozanova, Vesela³ (AUTHOR), Petrov, Petar Y.¹ (AUTHOR), Nikolova, Rositca D.¹ (AUTHOR)

Source: Molecules. Nov2022, Vol. 27 Issue 21, p7649. 34p.

Subject Terms: *COUMARINS, *PALLADIUM, *HETEROCYCLIC compounds, *OPTICAL properties, *SONOGASHIRA reaction, *SUZUKI reaction

Experimental and Theoretical Study on the Homodimerization Mechanism of 3-Acetylcoumarin.

Authors: Simeonova, Kristina B.¹ (AUTHOR), Koleva, Ana I.¹ (AUTHOR), Zlatanova, Anna-Mariya R.¹ (AUTHOR), Petkova-Yankova, Nevena I.¹ (AUTHOR) nipetkova@chem.uni-sofia.bg, Aleksandrov, Hristiyan A.¹ (AUTHOR), Petkov, Petko St.¹ (AUTHOR), Nikolova, Rositca D.¹ (AUTHOR)

Source: Molecules. Nov2022, Vol. 27 Issue 21, p7228. 15p.

Subject Terms: *ACTIVATION energy, *AUDIO frequency

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Synthesis and Chemical Properties of 3-Phosphono-coumarins and 1,2-Benzoxaphosphorins as Precursors for Bioactive Compounds.

Authors: Koleva, Ana I.¹ koleva.ana@gmail.com, Petkova-Yankova, Nevena I.¹, Nikolova, Rositca D.¹ rnikolova@chem.uni-sofia.bg, Genovese, Salvatore, Fiorito, Serena, Taddeo, Vito Alessandro

Source: Molecules. Jun2019, Vol. 24 Issue 11, p2030-2030. 1p. 4 Black and White Photographs, 44 Diagrams, 3 Charts, 14 Graphs.

Subject Terms: *CHEMICAL properties, *CHEMICAL synthesis, *CONJUGATE addition reactions, *BIOACTIVE compounds, *RING formation (Chemistry)