Ionically Tagged Ru-Alkylidenes for Metathesis Reactions under Biphasic Liquid-Liquid Conditions

The synthesis of the novel ionic Ru–alkylidenes [Ru[(4‐CO2)(1‐CH3)Py+)]2(IMesH2)(CH‐2‐(2‐PrO)‐C6H4)][OTf−]2 (1, IMesH2=1,3‐dimesitylimidazolin‐2‐ylidene, Py=pyridine, OTf−=triflate) and [RuCl[(4‐CO2)(1‐CH3)Py+)](IMesH2)(CH‐2‐(2‐PrO)‐C6H4)][OTf−] (2) is reported. Catalysts 1 and 2 were successfully...

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Bibliographic Details
Published in:ChemCatChem 2013-10, Vol.5 (10), p.3033-3040
Main Authors: Autenrieth, Benjamin, Willig, Felix, Pursley, Dominik, Naumann, Stefan, Buchmeiser, Michael R.
Format: Article
Language:English
Subjects:
biphasic catalysis
heterogeneous catalysis
ionic liquids
metathesis
ruthenium
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Summary:The synthesis of the novel ionic Ru–alkylidenes [Ru[(4‐CO2)(1‐CH3)Py+)]2(IMesH2)(CH‐2‐(2‐PrO)‐C6H4)][OTf−]2 (1, IMesH2=1,3‐dimesitylimidazolin‐2‐ylidene, Py=pyridine, OTf−=triflate) and [RuCl[(4‐CO2)(1‐CH3)Py+)](IMesH2)(CH‐2‐(2‐PrO)‐C6H4)][OTf−] (2) is reported. Catalysts 1 and 2 were successfully used in various metathesis reactions under biphasic liquid–liquid conditions using 1‐butyl‐2,3‐dimethylimidazolium tetrafluoroborate and heptane as liquid phases. Ruthenium leaching into the heptane phase was very low (
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.201300199