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PHOTOOXYGENATION OF 3‐HYDROXYFLAVONE IN A 12 K O 2 MATRIX
Author(s) -
CHOU PITAI,
STUDER SHAN L.,
MARTINEZ MARTY L.,
ORTON EDWARD,
YOUNG MARK
Publication year - 1991
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1991.tb08485.x
Subject(s) - photooxygenation , photoexcitation , photochemistry , chemistry , photodissociation , benzoic acid , matrix (chemical analysis) , singlet oxygen , organic chemistry , oxygen , excited state , physics , chromatography , nuclear physics
— We present an infrared study of 3‐hydroxyflavone in 12 K Ar and O 2 matrices. Although it is extremely photostable in an Ar matrix, a remarkable oxygenation reaction for 3‐hydroxyflavone takes place upon photoexcitation in an O 2 matrix. The primary photoproduct is concluded to be a keto‐hydroperoxide. On further photolysis the keto‐hydroperoxide affords the photostable secondary product 2‐(benzoyloxyl)benzoic acid, as well as CO and CO 2 through two independent pathways.