Issue 38, 2014

Crown ether adducts of light alkali metal triphenylsilyls: synthesis, structure and hydrosilylation catalysis

Abstract

Alkali metal triphenylsilyls [Li(12-crown-4)SiPh3]·(thf)0.5 (2), [Na(15-crown-5)SiPh3]·(thf)0.5 (3) and [K(18-crown-6)SiPh3(thf)] (4) were synthesized using 1,1,1-trimethyl-2,2,2-triphenyldisilane (Ph3SiSiMe3) and isolated in high yields. Solid state structures were determined by single crystal X-ray diffraction. These alkali metal silyls catalyzed the regioselective hydrosilylation of 1,1-diphenylethylene to give the anti-Markovnikov product. The presence of crown ethers enhanced the reactivity of the metal silyls in hydrosilylation catalysis.

Graphical abstract: Crown ether adducts of light alkali metal triphenylsilyls: synthesis, structure and hydrosilylation catalysis

Supplementary files

Article information

Article type
Paper
Submitted
27 Mar 2014
Accepted
07 May 2014
First published
07 May 2014

Dalton Trans., 2014,43, 14315-14321

Author version available

Crown ether adducts of light alkali metal triphenylsilyls: synthesis, structure and hydrosilylation catalysis

V. Leich, K. Lamberts, T. P. Spaniol and J. Okuda, Dalton Trans., 2014, 43, 14315 DOI: 10.1039/C4DT00916A

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