- Metal-free desilylative C-C bond formation by visible-light photoredox catalysis
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A newly developed methodology for the use of organosilanes as radical precursors under metal-free and visible-light conditions is presented. The strong oxidant character of the 9-mesityl-10-methylacridinium salt in its excited state enables the transforma
- Uygur, Mustafa,Danelzik, Tobias,García Manche?o, Olga
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supporting information
p. 2980 - 2983
(2019/03/26)
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- Decatungstate photocatalyzed benzylation of alkenes with alkylaromatics
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The direct benzylation of electrophilic al-kenes with alkylbenzenes has been achieved by decatungstate photocatalysis in a high ionic strength medium (5:1 acetonitrile/water mixed solvents, 0.5 M lithium perchlorate). The reaction has been extended to ring-substituted (Cl, F, CN) toluenes and further alkylbenzenes. Intramolecular selectivity (p-cymene, 4-methylanisole) and deuteration effects support the atom transfer character of the process that, however, requires a sufficient stabilization of the intermediate polar exciplex to occur. The reactivity of the deca-tungstate anion is compared with that of aromatic ketones, the benchmark of photochemical hydrogen/ electron transfer processes.
- Qrareya, Hisham,Ravelli, Davide,Fagnoni, Maurizio,Albini, Angelo
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supporting information
p. 2891 - 2899
(2014/03/21)
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- Decatungstate as photoredox catalyst: Benzylation of electron-poor olefins
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Excited tetrabutylammonium decatungstate (TBADT), known to activate a variety of compounds via hydrogen atom transfer (HAT), has now been applied as a photoredox catalyst for the effective oxidative cleavage of benzyl silanes and radical benzylation of reducible olefins occurring in isolated yields from poor to excellent.
- Montanaro, Sara,Ravelli, Davide,Merli, Daniele,Fagnoni, Maurizio,Albini, Angelo
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supporting information; experimental part
p. 4218 - 4221
(2012/09/22)
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- A practical method for the reductive cleavage of the sulfide bond in xanthates
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Xanthates can be reduced to the corresponding alkane through cleavage of the sulfide bond by heating in 2-propanol in the presence of equimolar amounts of dilauroyl peroxide, added in small portions.
- Liard, Annie,Quiclet-Sire, Beatrice,Zard, Samir Z.
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p. 5877 - 5880
(2007/10/03)
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