title: Photooxygenation of alkanes by dioxygen with p-benzoquinone derivatives with high quantum yields.
abstract: Alkanes were oxygenated by dioxygen with p-benzoquinone derivatives such as p-xyloquinone in alkanes which are used as solvents to yield the corresponding alkyl hydroperoxides, alcohols and ketones under visible light irradiation with high quantum yields (Φ = 1000, 1600%). The photooxygenation is started by hydrogen atom abstraction from alkanes by the triplet excited states of p-benzoquinone derivatives as revealed by laser-induced transient absorption spectral measurements.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan. ookubo@chem.eng.osaka-u.ac.jp.
authors.forename: Kei
authors.initials: K
authors.lastname: Ohkubo
authors.forename: Kensaku
authors.initials: K
authors.lastname: Hirose
authors.forename: Shunichi
authors.initials: S
authors.lastname: Fukuzumi
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D000473:Alkanes / Q000737:chemistry*; D016227:Benzoquinones / Q000737:chemistry*; D003511:Cyclohexanols / Q000737:chemistry; D003512:Cyclohexanones / Q000737:chemistry; D007659:Ketones / Q000737:chemistry; D008027:Light; D010100:Oxygen / Q000737:chemistry*; D055668:Photochemical Processes; D013057:Spectrum Analysis
chemical_list: D000097:Acetonitriles; D000473:Alkanes; D016227:Benzoquinones; D003511:Cyclohexanols; D003512:Cyclohexanones; D007659:Ketones; C036468:cyclohexanone; D010100:Oxygen; C032159:acetonitrile