2 research outputs found
Disilaferracycle Dicarbonyl Complex Containing Weakly Coordinated η<sup>2</sup>‑(H-Si) Ligands: Application to C–H Functionalization of Indoles and Arenes
No full textWell-defined
iron complex-mediated catalytic C-3-selective silylation
of indole derivatives and stoichiometric C–H bond functionalization
of arenes were achieved using an iron dicarbonyl complex containing
the disilaferracycle moiety [<i>o</i>-(SiMe<sub>2</sub>)<sub>2</sub>C<sub>6</sub>H<sub>4</sub>]ÂFeÂ(CO)<sub>2</sub>Â[<i>o</i>-{η<sup>2</sup>-(H-SiMe<sub>2</sub>)<sub>2</sub>}ÂC<sub>6</sub>H<sub>4</sub>] (<b>1</b>). Facile liberation of the
η<sup>2</sup>-(H-Si) groups in <b>1</b> was the key to
effective promotion of these reactions
Combinatorial Approach to the Catalytic Hydrosilylation of Styrene Derivatives: Catalyst Systems Composed of Organoiron(0) or (II) Precursors and Isocyanides
No full text(COT)<sub>2</sub>Fe and the open
ferrocenes (MPDE)<sub>2</sub>Fe
(MPDE = η<sup>5</sup>-3-methylpentadienyl) and (DMPDE)<sub>2</sub>Fe (DMPDE = η<sup>5</sup>-2,4-dimethylpentadienyl) were found
to function as catalyst precursors for the hydrosilylation of alkenes
in the presence of auxiliary ligands. Screening trials determined
that the optimal catalyst system was composed of (COT)<sub>2</sub>Fe and adamantyl isocyanide, allowing the selective hydrosilylation
of styrene derivatives with trisubstituted hydrosiloxanes and a polydimethylsiloxane
bearing Me<sub>2</sub>SiH moieties as the end groups. Under the appropriate
conditions, the dehydrogenative silylation side reaction was completely
suppressed, and the reaction TON exceeded 5000
