Coumarin reactivity in free radical reactions

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 321; no. 3; pp. 823 - 829
• Main Authors: Antropova, Irina G., Kurakina, Elena S., Magomedbekov, Eldar P., Oo, Phyo Myint
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-09-2019; Springer; Springer Nature B.V
• Subjects: Acetaldehyde; Antioxidants; Chemical reactions; Chemistry; Chemistry and Materials Science; Coumarin; Diagnostic Radiology; Free radicals; Free radicals (Chemistry); Hadrons; Heavy Ions; Inorganic Chemistry; Nuclear Chemistry; Nuclear Physics; Organic chemistry; Physical Chemistry; Radiation; Radiolysis; Zinc (II); Free radical reactions; Ionizing radiation; Carbon-centred α-hydroxyethyl radical (HER); Coumarin; HPLC/MS chromatography
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-019-06666-8

In the present work the final products of coumarin radiation chemical transformation are investigated by chromatography. During radiolysis of coumarin by a
60
Co-γ-source, ethanal concentrations were determined and radiation chemical yields for different systems were calculated. A hypothesis of coumarin reactivity in free radical reactions with
CH
3
C
˙
HOH
is suggested. Coumarin was shown to have reducing properties with carbon-centred α-hydroxyethyl free radicals. Coumarin antioxidant activity increased in the presence of zinc (II) ions.