Suzuki‐Kupplung in dreiphasigen Mikroemulsionssystemen

Nowothnick, Henriette; Blum, Jochanan; Schomäcker, Reinhard

doi:10.1002/ange.201005263

Cited by 3 publications

References 16 publications

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Acidic Three‐Liquid‐Phase Microemulsion Systems Based on Balanced Catalytic Surfactant for Epoxidation and Sulfide Oxidation under Mild Conditions

Fressancourt-Collinet¹,

Hong²,

Leclercq³

et al. 2013

Adv Synth Catal

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Didecyldimethylammonium tungstate has been designed as a balanced catalytic surfactant to form acidic three-liquid-phase microemulsion systems at room temperature in the presence of water, a non-chlorinated solvent and dimethyldioctylammonium salts (hydrogen sulfate and dihydrogen phosphate). The triphasic system is efficient for the oxidation of olefins, sulfides and thiophenes under mild conditions. Moreover, the recovery and reusability of the catalyst, the straightforward separation of prod-ucts and catalysts in two distinct phases as well as the possible use of environmentally friendly solvents such as tert-butyl acetate, make this system particularly attractive for catalytic oxidation reactions involving hydrogen peroxide as the primary oxidant under acidic or neutral conditions.

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Acidic Three‐Liquid‐Phase Microemulsion Systems Based on Balanced Catalytic Surfactant for Epoxidation and Sulfide Oxidation under Mild Conditions

Fressancourt-Collinet¹,

Hong²,

Leclercq³

et al. 2013

Adv Synth Catal

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Hydroformylation of 1‐Dodecene with Water‐Soluble Rhodium Catalysts with Bidentate Ligands in Multiphase Systems

et al. 2013

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A hydrophilic metal–ligand complex formed from the precursor [dicarbonyl(acetylacetonato)rhodium(I)] {[Rh(acac)(CO)2]} and the bidentate ligand [2,7‐bis(SO3Na)‐4,5‐bis(diphenylphosphino)‐9,9‐dimethylxanthene] (SulfoXantPhos), was found to be a suitable candidate as a catalyst complex for the hydroformylation of 1‐dodecene in multiphase systems formulated from water, 1‐dodecene, and a nonionic surfactant. To improve the solubilization of the olefin in the aqueous phase, surfactants were added. The multiphase system acted as a tunable solvent, through which not only the interfacial area was increased during the reaction but also the phase separation behavior could be manipulated through temperature changes, thus allowing an easy separation of the expensive rhodium complex from the organic phase after the reaction. The influence of different process parameters such as the type of surfactant, type of ligand, and the metal/ligand ratio was investigated and discussed. Also the influence of the phase state on the reaction was determined. Under optimized reaction conditions, turnover frequencies of >300 h−1 and selectivities of 98:2 towards the linear product could be achieved.

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Experimental investigation of the complex liquid liquid equilibrium in the system pure/technical grade nonionic surfactant + water + oil

Schrader¹

2014

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Suzuki‐Kupplung in dreiphasigen Mikroemulsionssystemen

Cited by 3 publications

References 16 publications

Acidic Three‐Liquid‐Phase Microemulsion Systems Based on Balanced Catalytic Surfactant for Epoxidation and Sulfide Oxidation under Mild Conditions

Acidic Three‐Liquid‐Phase Microemulsion Systems Based on Balanced Catalytic Surfactant for Epoxidation and Sulfide Oxidation under Mild Conditions

Hydroformylation of 1‐Dodecene with Water‐Soluble Rhodium Catalysts with Bidentate Ligands in Multiphase Systems

Experimental investigation of the complex liquid liquid equilibrium in the system pure/technical grade nonionic surfactant + water + oil

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