Room-temperature hydrosilylation of the C F bond of vinyl fluoride catalyzed by osmium hydrides

The reactions of OsH(Ph)(CO)L 2 (L = P tBu 2Me) with HSiMe 3, H 2SiPh 2 or H 3SiPh produce benzene and OsH 3(silyl)(CO)L 2, which is characterized as a fac-H 3OsP 3 shape capped on the H 3 face by the silyl group. For H 2SiPh 2 and H 3SiPh, these reactions are shown proceed through an intermediate O...

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Bibliographic Details
Published in:Journal of molecular catalysis. A, Chemical Chemical, 2004-12, Vol.224 (1), p.125-131
Main Authors: Renkema, Kenton B., Werner-Zwanziger, Ulrike, Pagel, Mark D., Caulton, Kenneth G.
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Exact sciences and technology
Fluorocarbon
General and physical chemistry
Hydride
Osmium
Silanolysis
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:The reactions of OsH(Ph)(CO)L 2 (L = P tBu 2Me) with HSiMe 3, H 2SiPh 2 or H 3SiPh produce benzene and OsH 3(silyl)(CO)L 2, which is characterized as a fac-H 3OsP 3 shape capped on the H 3 face by the silyl group. For H 2SiPh 2 and H 3SiPh, these reactions are shown proceed through an intermediate Os(H) 2(silylene)(CO)L 2 species. OsHF(CO)L 2 reacts with these silanes to give the same OsH 3 product (and silyl-F). These reactions can be combined to effect osmium catalysis of conversion of Si H + H 2C CHF to fluorosilane and H 2C CH 2 from OsH 3(SiMe 3)(CO)L 2, or from the catalyst precursor OsHF(CO)L 2. ▪
ISSN:1381-1169
1873-314X
DOI:10.1016/j.molcata.2004.07.028