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http://repository.aaup.edu/jspui/handle/123456789/108
Title: | Decatungstate photocatalyzed benzylation of alkenes by alkylaromatics |
Authors: | hisham qrareya, $AAUP$Other davide ravelli, $Other$Other maurizio fagnoni, $Other$Palestinian angelo albini., $Other$Other |
Keywords: | benzylation; C_x0002_H bond activation; photocatalysis; polyoxometalates; radicals |
Issue Date: | 2013 |
Publisher: | Adv. Synth. Catal. |
Abstract: | The direct benzylation of electrophilic alkenes with alkylbenzenes has been achieved by decatungstate photocatalysis in a high ionic strength medium (5:1 acetonitrile/water mixed solvents, 0.5M 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 decatungstate anion is compared with that of aromatic ketones, the benchmark of photochemical hydrogen/ electron transfer processes. |
URI: | http://repository.aaup.edu/jspui/handle/123456789/108 |
Appears in Collections: | Faculty & Staff Scientific Research publications |
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