Carboxyl Graphene as a Superior Support for Bulky Ruthenium-Based Olefin Metathesis Catalyst

0492093 - ÚFCH JH 2019 RIV US eng J - Journal Article
Kaczanowska, K. - Chwalba, M. - Pastva, Jakub - Kubů, Martin - Ruszczynska, A. - Bulska, E. - Balcar, Hynek - Skowerski, K.
Carboxyl Graphene as a Superior Support for Bulky Ruthenium-Based Olefin Metathesis Catalyst.
Organometallics. Roč. 37, č. 12 (2018), s. 1837-1844. ISSN 0276-7333. E-ISSN 1520-6041
R&D Projects: GA ČR GA17-01440S
Institutional support: RVO:61388955
Keywords : natural-product synthesis * n-heterocyclic carbene * heterogeneous catalysts * mesoporous silica * metal-complexes
OECD category: Physical chemistry
Impact factor: 4.100, year: 2018

A Hoveyda-type catalyst decorated with two quaternary ammonium tags was synthesized and noncovalently grafted on SiO2, SBA-15, and on carboxyl graphene. A comparative study showed that the efficiency of the dual-anchored heterogeneous catalysts was highly dependent on the properties of the supporting material with graphene outperforming silicate supports. The graphene-immobilized complex exhibited excellent efficiency reflected in turnover numbers obtained in ring-closing metathesis and in self-metathesis of 1-decene. Importantly, the solid-supported catalyst assured increased recyclability with no ruthenium leaching as confirmed by inductively coupled plasma mass spectrometry.
Permanent Link: http://hdl.handle.net/11104/0285655