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A pyridyl-triazole ligand for ruthenium and iridium catalyzed CC and CO hydrogenations in water/organic solvent biphasic systems

Paper ID Volume ID Publish Year Pages File Format Full-Text
39241 45815 2015 6 PDF Available
Title
A pyridyl-triazole ligand for ruthenium and iridium catalyzed CC and CO hydrogenations in water/organic solvent biphasic systems
Abstract

The water soluble pyridyl-triazole ligand sodium 2-(1-((pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)ethyl sulfate (Na1) has been successfully employed in combination with ruthenium and iridium for catalytic hydrogenation of CC and CO double bonds in water/toluene biphasic systems. Reaction of the ligand with [RuCl2(η6-p-cymene)]2 affords the new water soluble complex [RuCl(η6-p-cymene)(1)] (2) which has been found to be catalytically active in the water/organic solvent biphasic hydrogenation using styrene and 2-cyclohexen-1-one as model substrates. Very conveniently, the iridium based catalytic system is prepared by simply stirring in water [Ir(η4-COD)Cl]2 with Na1 (Ir:Na1 molar ratio = 1:4), the resulting solution is catalytically active and appears more efficient than 2. With both the Ru- and Ir-based systems the catalytically active aqueous phases can be used at least three times without loss of activity.

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Keywords
Ruthenium; Iridium; Catalytic hydrogenation; Biphasic catalysis; Water
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A pyridyl-triazole ligand for ruthenium and iridium catalyzed CC and CO hydrogenations in water/organic solvent biphasic systems
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 503, 25 August 2015, Pages 20–25
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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