| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Highly selective dehydrogenative silylation of alkenes catalyzed by rhenium complexes |
| Autor/-in: | Jiang, Yanfeng Blacque, Olivier Fox, Thomas Frech, Christian M. Berke, Heinz |
| DOI: | 10.1002/chem.200802019 |
| Erschienen in: | Chemistry - A European Journal |
| Band(Heft): | 15 |
| Heft: | 9 |
| Seite(n): | 2121 |
| Seiten bis: | 2128 |
| Erscheinungsdatum: | 2009 |
| Verlag / Hrsg. Institution: | Wiley |
| ISSN: | 0947-6539 1521-3765 |
| Sprache: | Englisch |
| Fachgebiet (DDC): | 540: Chemie |
| Zusammenfassung: | Choosy chemicals: Rhenium(I) complexes of type [ReBr(2)(L)(NO)(PR(3))(2)] (L=H(2) (1), CH(3)CN (2), ethylene (3); R=iPr (a), cyclohexyl (b)) proved to be suitable catalyst precursors for the highly selective dehydrogenative silylation of alkenes. Two types of rhenium(I) hydride species, [ReBrH(NO)(PR(3))(2)] (4) and [ReBr(eta(2)-CH(2)=CHR(1))H(NO)(PR(3))(2)] (5), were found in the [ReBr(2)(L)(NO)(PR(3))(2)]-catalyzed dehydrogenative silylation of alkenes.Rhenium(I) complexes of type [ReBr(2)(L)(NO)(PR(3))(2)] (L=H(2) (1), CH(3)CN (2), and ethylene (3); R=iPr (a) and cyclohexyl (Cy; b)) catalyze dehydrogenative silylation of alkenes in a highly selective manner to yield silyl alkenes and the corresponding alkanes. Hydrosilylation products appear only rarely depending on the type of olefinic substituent, and if they do appear then it is in very minor amounts. Mechanistic studies showed that two rhenium(I) hydride species of type [ReBrH(NO)(PR(3))(2)] (R=iPr (4 a) and Cy (4 b)) and [ReBr(eta(2)-CH(2)=CHR(1))H(NO)(PR(3))(2)] (R(1)=p-CH(3)C(6)H(4), R=iPr (5 a), Cy (5 b); R(1)=H, R=iPr (5 a'), Cy (5 b')) are involved in the initiation pathway of the catalysis. The rate-determining steps of the catalytic cycle are the phosphine dissociation from complexes of type 5 and the reductive eliminations to form the alkane components. The catalytic cycle implies that the given rhenium systems have the ability to activate C-H and Si-H bonds through the aid of a facile redox interplay of Re(I) and Re(III) species. The molecular structures of 4 b and 5 a were established by means of X-ray diffraction studies. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/10478 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | Life Sciences und Facility Management |
| Enthalten in den Sammlungen: | Publikationen Life Sciences und Facility Management |
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Jiang, Y., Blacque, O., Fox, T., Frech, Christian M., & Berke, H. (2009). Highly selective dehydrogenative silylation of alkenes catalyzed by rhenium complexes. Chemistry - A European Journal, 15(9), 2121–2128. https://doi.org/10.1002/chem.200802019
Jiang, Y. et al. (2009) ‘Highly selective dehydrogenative silylation of alkenes catalyzed by rhenium complexes’, Chemistry - A European Journal, 15(9), pp. 2121–2128. Available at: https://doi.org/10.1002/chem.200802019.
Y. Jiang, O. Blacque, T. Fox, Christian M. Frech, and H. Berke, “Highly selective dehydrogenative silylation of alkenes catalyzed by rhenium complexes,” Chemistry - A European Journal, vol. 15, no. 9, pp. 2121–2128, 2009, doi: 10.1002/chem.200802019.
JIANG, Yanfeng, Olivier BLACQUE, Thomas FOX, Christian M. FRECH und Heinz BERKE, 2009. Highly selective dehydrogenative silylation of alkenes catalyzed by rhenium complexes. Chemistry - A European Journal. 2009. Bd. 15, Nr. 9, S. 2121–2128. DOI 10.1002/chem.200802019
Jiang, Yanfeng, Olivier Blacque, Thomas Fox, Christian M. Frech, and Heinz Berke. 2009. “Highly Selective Dehydrogenative Silylation of Alkenes Catalyzed by Rhenium Complexes.” Chemistry - A European Journal 15 (9): 2121–28. https://doi.org/10.1002/chem.200802019.
Jiang, Yanfeng, et al. “Highly Selective Dehydrogenative Silylation of Alkenes Catalyzed by Rhenium Complexes.” Chemistry - A European Journal, vol. 15, no. 9, 2009, pp. 2121–28, https://doi.org/10.1002/chem.200802019.
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