caa a22 4500 463251849 CHVBK 20180405153342.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10562-007-9094-9 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9094-9 Catalytic performance of chiral rhodium complex with water-soluble sulfonated ( R )-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl for enantioseletive hydrogenation in ionic liquid biphasic system [Elektronische Daten] [Jiarong She, Linmin Ye, Jing Zhu, Youzhu Yuan] Asymmetric hydrogenation of dimethyl itaconate by the chiral rhodium complex ligated with water-soluble sulfonated (R)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (labeled as (R)-BINAPS) was performed in ionic liquid-isopropanol biphasic catalytic system. A moderate enantiomeric excess (ee) of 64% and initial turnover frequency (TOFmax) as high as 1234h−1 could be obtained at 303K and 2.0MPa when the molar ration of substrate to rhodium was set at 1000. Application of imidazolium ionic liquid [bmim]BF4 (bmim = 1-butyl-3-methyl imidazolium cation) made it possible to reuse the catalyst several times, showing rather good stability in the catalyst performance. According to the ICP-OES analyses, the total extraction of rhodium species by the reactants from the ionic liquid phase was about 3.24wt% after the catalyst for four runs, which was about three times lower than that of total loss of phosphorous species. The slight decreases in the ee value and TOFmax during the catalyst reuse could be recovered essentially to the pristine levels by replenishing certain amount of the fresh ligand into the used catalyst. Springer Science+Business Media, LLC, 2007 rhodium nationallicence ionic liquid nationallicence biphasic catalysis nationallicence water-soluble complex nationallicence enantioselective hydrogenation nationallicence She Jiarong Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut Ye Linmin Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut Zhu Jing Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut Yuan Youzhu Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 116/1-2(2007-07-01), 70-75 1011-372X 116:1-2<70 2007 116 10562 https://doi.org/10.1007/s10562-007-9094-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9094-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- She Jiarong Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut NATIONALLICENCE 700 1- Ye Linmin Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut NATIONALLICENCE 700 1- Zhu Jing Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut NATIONALLICENCE 700 1- Yuan Youzhu Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China aut NATIONALLICENCE 773 0- Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 116/1-2(2007-07-01), 70-75 1011-372X 116:1-2<70 2007 116 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer