The objective of this research was the development of a strategy for immobilization of bis-indenyl ligands on the surface of a mesoporous support. Four bis-indenyl ligands containing tethers of various lengths with terminal alkene groups were synthesized from indene and immobilized on functionalized silica gels. The first strategy of immobilization was based on the reaction of catalytic alkene hydrosilylation by surface Si-H groups of the silica support in presence of a Speier's catalyst. However, this method had a significant drawback due to side reaction of the catalyst decomposition to metallic Pt that contaminated the products. Another strategy involved hydrothiolation of the double bond by surface S-H groups catalyzed by AIBN. After comparing obtained results, the second method was chosen as more efficient. Obtained materials can be used further as intermediates for synthesis of supported metallocene catalysts.

Immobilized bis-indenyl ligands for stable and cost-effective metallocene catalysts

245th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.