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Homo-metathesis of vinylsilanes catalysed by ruthenium carbene complexes |
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| Authors: | Cezary Pietraszuk Bogdan Marciniec Szymon Rogalski Helmut Fischer |
| Institution: | aFaculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland bFachbereich Chemie, Universität Konstanz, Fach M 727, 78457 Konstanz, Germany |
| Abstract: | Effective homo-metathesis of a series of dichloro-substituted vinylsilanes H2C = C(H)SiCl2R (where R = Me, OSiMe3, C6H5, C6H4–Me-4, C6H4–CF3-4) in the presence of second generation Grubbs catalyst Cl2(PCy3)(IMesH2)Ru(=CHPh)] (I) and Hoveyda–Grubbs catalyst (II) leads to selective formation of E-1,2-bis(silyl)ethenes and ethene. On the basis of the results of experiments with deuterium-labelled reagents, a metallacarbene mechanism has been suggested for these reactions. |
| Keywords: | Homo-metathesis Dichloro-substituted vinylsilanes Metallacarbene mechanism |
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