41977-31-5Relevant articles and documents
Visible light-induced highly selective transformation of olefin to ketone by 2,4,6-triphenylpyrylium cation encapsulated within zeolite Y
Shiraishi, Yasuhiro,Saito, Naoya,Hirai, Takayuki
, p. 773 - 775 (2008/02/03)
2,4,6-Triphenylpyrylium cation encapsulated within zeolite Y promotes highly selective transformation of olefins to ketones with molecular oxygen, under visible light (λ > 400 nm) irradiation at room temperature. The Royal Society of Chemistry 2006.
Pyrylium Salts as Photosensitizers in Homogeneous and Heterogeneous Electron-Transfer Catalysis. - A Comparison with Cyano Arenes
Mattay, Jochen,Vondenhof, Martin,Denig, Richard
, p. 951 - 958 (2007/10/02)
Two new triphenylpyrylium salts, both being fixed to a polymeric backbone, have been synthesized.They are sensitizers for photochemically induced electron-transfer reactions, offering the possibility of heterogeneous charge transfer.Their usability in electron-transfer-catalyzed dimerizations and mixed cycloadditions of 1,3-cyclohexadiene and phenyl vinyl ether has been tested in comparison to other common photosensitizers such as 9,10-dicyanoanthracene and 1,4-dicyanonaphthalene.In addition, 2,4,6-triphenylpyrylium tetrafluoroborate was shown to operate as an efficient sensitizer for the dimerization and the photooxygenation of 1,1-diphenylethene.Diverse selectivities in the product formation indicate different mechanisms and are discussed in view of earlier results reported in the literature. - Key Words: Electron-transfer photocatalysis / Electron transfer, photoinduced / Photooxygenation / Pyrylium salts, polymeric / Radical cation cycloadditions
Photosensitized Electron-Transfer Reactions. Interception of the Geminate Radical Ion Pair
Mattes, Susan L.,Farid, Samir
, p. 1386 - 1387 (2007/10/02)
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