Selective catalytic hydrogenations in a microfluidics-based high throughput flow reactor on ion-exchange supported transition metal complexes: A modular approach to the heterogenization of soluble complex catalysts
作者： Henrietta H. Horváth , Gábor Papp , Csaba Csajági , Ferenc Joó
DOI: 10.1016/J.CATCOM.2006.07.016
关键词: Ion exchange 、 Catalysis 、 Transition metal 、 Rhodium 、 Triphenylphosphine 、 Inorganic chemistry 、 Selectivity 、 Ruthenium 、 Isomerization 、 Combinatorial chemistry 、 Chemistry 、 Process Chemistry and Technology 、 General chemistry
摘要: Abstract Water-soluble ruthenium(II) and rhodium(I) complexes containing monosulfonated triphenylphosphine (mtppms) ligands were immobilized on commercially available anion-exchangers. The resulting solid catalysts suitable for use in a microfluidics-based flow reactor (H-Cube™) of high throughput capability. With the heterogenized [{RuCl2(mtppms)2}2] disubstituted alkynes hydrogenated to cis-alkenes with up 85% selectivity, while [RhCl(mtppms)3] yielded 1,2-diphenylethane as major product. ruthenium catalyst also reduced trans-cinnamaldehyde 3-phenylpropanal selectively catalyzed isomerization 1-octen-3-ol octan-3-one. This simple versatile method immobilization water-soluble yields active durable molecularly dispersed yet catalysts.
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