An efficient isomerization of aliphatic and cyclic olelins is achieved by using well-defined metallocene alkyne complexes as catalysts. Titanocene complexes isomerize I-alkenes to internal alkenes under mild conditions. The titanium complex was recovered quantitatively. Cyclic olcfins, e.g. cyclohex
Dehydrocoupling of Silanes Catalyzed by Zirconocene- and Titanocene Alkyne Complexes
โ Scribed by Normen Peulecke; Dominique Thomas; Wolfgang Baumann; Christine Fischer; Uwe Rosenthal
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 233 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Thezirconocene-and titanocene alkyne complexes 1-10 were tested to be effective catalysts in the dehydrocoupling of hydrosilanes like PhMeSiHz and PhJ3iHz to give oligomers and of other examples, e.g., PhSiHs polymers with cyclic oligosikmesas byproducts. @ 1997 Elsevier Science Ltd.
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The influence of metals, alkyne substituents, Cp substitution complex 3 reacted with one equivalent of water to yield the dimeric alkylidene-ยต-oxo complex [(thi) 2 Ti(CPh=CHPh)] 2 (ยต-and additional ligands on the stability of bridged and unbridged ฮท 2 -alkyneฯชtitanocene and ฯชzirconocene complexes O)