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• W2093714976 abstract "New Au(I) complexes featuring ligands of the type κ1-3-R2P-indene (κ1-1a, R = iPr; κ1-1b, R = Ph) and κ1-1-R2P-2-Me2N-indene (κ1-1c, R = iPr; κ1-1d, R = Ph) were prepared and structurally characterized. Dicoordinate neutral complexes (κ1-1)AuCl (2−5) were prepared by reacting 1 with Me2SAuCl, with isolated yields ranging from 56 to 88%. Addition of a second equivalent of 1a to 2 resulted in formation of the tricoordinate neutral species (κ1-1a)2AuCl (6; 69%). By treating 6 with AgOTf, the corresponding cationic complex [(κ1-1a)2Au]+OTf- ([7]+OTf-; 72%) was obtained. The catalytic performance of these new Au(I) compounds in the hydrosilylation of various aldehydes was compared to that of catalyst systems derived from a combination of R3P (R = Et, nBu, tBu, Cy, or Ph) or N-heterocyclic carbene ligands and Me2SAuCl. While for the phosphine-substituted indene complexes, a catalyst mixture of 3 mol % 2 and 20 mol % 1a was found to be optimal, a catalyst derived from 3 mol % Me2SAuCl and 20 mol % Et3P, nBu3P, or tBu3P proved to be the most effective overall, especially for reactions conducted at 24 °C. Single-crystal X-ray diffraction data are provided for 2, 4, 6, and [7]+OTf-." @default.
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• W2093714976 date "2007-01-13" @default.
• W2093714976 modified "2023-10-11" @default.
• W2093714976 title "Au(I) Complexes Supported by Donor-Functionalized Indene Ligands: Synthesis, Characterization, and Catalytic Behavior in Aldehyde Hydrosilylation" @default.
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• W2093714976 doi "https://doi.org/10.1021/om060948n" @default.
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