1569905-08-3Relevant articles and documents
Decatungstate Photocatalyzed Acylations and Alkylations in Flow via Hydrogen Atom Transfer
Bonassi, Filippo,Ravelli, Davide,Protti, Stefano,Fagnoni, Maurizio
, p. 3687 - 3695 (2015)
A set of atom-economical radical conjugate addition reactions of alkyl and acyl radicals onto electron-poor olefins or diisopropyl azodicarboxylate has been carried out on a multi-gram scale under continuous flow conditions. The process is based on the us
Decatungstate photocatalyzed benzylation of alkenes with alkylaromatics
Qrareya, Hisham,Ravelli, Davide,Fagnoni, Maurizio,Albini, Angelo
supporting information, p. 2891 - 2899 (2014/03/21)
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.
