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Silicenium ions reactions

In the same study66 further pathways to generate 68 were elucidated by using labeled precursors. For example, 68 is generated from the molecular ion 72 via two entirely different mechanisms. The first one involves, again, interaction of an ether oxygen atom with a silicenium ion (reaction 40 72 73 68 + 74). In the second one, in the initial step... [Pg.460]

The photochemical reduction of 1-methylquinolinium ions by (TMS)3SiH proceeds regioselectively to afford the corresponding 1,4-dihydroquinones in a water-acetonitrile solvent system (Reaction 4.47) [83]. Mechanistic studies demonstrated that the reactions are initiated by photoinduced electron transfer from the silane to the singlet excited states of 1-methylquinolinium ions to give the silane radical cation-quinolinyl radical pairs, followed by hydrogen transfer in the cage to yield 1,4-dihydroquinones and silicenium ion. Silyl cations are quenched by water. [Pg.69]

See other pages where Silicenium ions reactions is mentioned: [Pg.559]    [Pg.559]    [Pg.559]    [Pg.559]    [Pg.19]    [Pg.8]    [Pg.9]    [Pg.280]    [Pg.284]    [Pg.517]    [Pg.535]    [Pg.538]    [Pg.551]    [Pg.557]    [Pg.558]    [Pg.560]    [Pg.561]    [Pg.561]    [Pg.563]    [Pg.568]    [Pg.571]    [Pg.572]    [Pg.574]    [Pg.575]    [Pg.575]    [Pg.576]    [Pg.576]    [Pg.577]    [Pg.578]    [Pg.578]    [Pg.578]    [Pg.580]    [Pg.580]    [Pg.581]    [Pg.581]    [Pg.581]    [Pg.584]    [Pg.588]    [Pg.619]    [Pg.622]    [Pg.1003]    [Pg.1113]    [Pg.404]    [Pg.975]   
See also in sourсe #XX -- [ Pg.1042 , Pg.1043 , Pg.1044 ]



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Silicenium ions

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