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Sensitised (electron-transfer) photochemical reactions of cyclopolysilanes, (R<sup>1</sup>R<sup>2</sup>Si)<sub>n</sub>(n= 3 or 4), in a polar, nucleophilic solvent; electron donating nature of cyclopolysilanes (n= 3–7)
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1986
Year
EngineeringN= 3–7Synthetic PhotochemistryOrganic ChemistryChemistryMixed SolventPolymersPhotoredox ProcessMacromolecular EngineeringFacile Electron TransferNucleophilic SolventRing-opening AdditionPolymer ChemistryBiochemistryPhotochemistryMechanistic PhotochemistryPhotochemical ReactionsBiomolecular EngineeringOrganic Charge-transfer CompoundOrganic Material ChemistryHeterocyclicNatural Sciences
Irradiation (<390 nm) of cyclopolysilanes, (R1R2Si)n(n= 3 or 4), in a mixed solvent (EtOH-MeCN-cyclo-C6H12), with 9,10-dicyanoanthracene as sensitiser, gave the corresponding α-ethoxy-ω-hydropolysilanes resulting from ring-opening addition of ethanol to the polysilanes; a mechanism involving facile electron transfer from the polysilanes is proposed.