Evidence for a lack of reactivity of carotenoid addition radicals towards oxygen: A laser flash photolysis study of the reactions of carotenoids with acylperoxyl radicals in polar and non-polar solvents

Journal of the American Chemical Society

Volumn 125, Issue 11, 2003, Pages 3330-3340

  El Agamey, Ali ^a,b   McGarvey, David J ^a  

^a KEELE UNIVERSITY   (United Kingdom)

^b Damietta Faculty of Science   (Egypt)

Author keywords

[No Author keywords available]

Indexed keywords

POLAR SOLVENTS;

BLEACHING; GROUND STATE; KETONES; PIGMENTS; RATE CONSTANTS; SOLVENTS;

PHOTOLYSIS;

2,2,4,4 TETRAMETHYL 3 PENTANONE; 7,7' DIHYDRO BETA CAROTENE; ACYLPEROXYL RADICAL; ANTIOXIDANT; BENZOIN METHYL ETHER; BETA CAROTENE; CAROTENOID; DECAPRENO BETA CAROTENE; DIBENZYL KETONE; DODECAPRENO BETA CAROTENE; HEXANE; KETONE; LYCOPENE; METHANOL; OXYGEN; PINACOLONE; RADICAL; SEPTAPRENO BETA CAROTENE; SOLVENT; UNCLASSIFIED DRUG;

ABSORPTION; ABSORPTION SPECTROPHOTOMETRY; ADDITION REACTION; ARTICLE; BLEACHING; CYCLIZATION; DRUG ACTIVITY; DRUG MECHANISM; DRUG STRUCTURE; ENTROPY; KINETICS; PHOTOLYSIS; POLARIZATION; REACTION ANALYSIS; REACTION TIME; ROOM TEMPERATURE; STRUCTURE ANALYSIS;

ANTIOXIDANTS; CAROTENOIDS; FREE RADICALS; HEXANES; KINETICS; LASERS; OXIDANTS; OXYGEN; PEROXIDES; PHOTOLYSIS; SOLVENTS; SPECTROPHOTOMETRY, ULTRAVIOLET;

EID: 0037454303     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja027986s     Document Type: Article

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109. We are indebted to a referee who drew our attention to this work. (a) Dizdaroglu, M.: von Sonntag, C.; Schulte-Frohlinde, D. J. Am. Chem. Soc. 1975, 97, 2277. (b) Giese, B.; Burger, J.; Kang, T. W.; Kesselheim, C.; Wittmer, T. J. Am. Chem. Soc. 1992, 114, 7322. (c) Giese, B.; Beyrich-Graf, X.; Burger, J.; Kesselheim, C.; Senn, M.; Schäfer, T. Angew. Chem., Int. Ed. Engl. 1993, 32, 1742. (d) Giese, B.; Beyrich-Graf, X.; Erdmann, P.; Giraud, L.; Imwinkelried, P.; Müller, S. N.; Schwitter, U. J. Am. Chem. Soc. 1995, 117, 6146. (e) Gugger, A.; Batra, R.; Rzadek, P.; Rist, G.; Giese, B. J. Am. Chem. Soc. 1997, 119, 8740. (f) Giese, B.; Dussy, A.; Meggers, E.; Petretta, M.; Schwitter, U. J. Am. Chem. Soc. 1997, 119, 11 130. (g) Glatthar, R.; Spichty, M.; Gugger, A.; Batra, R.; Damm, W.; Mohr, M.; Zipse, H.; Giese, B. Tetrahydron 2000, 56, 4117.
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