TY - JOUR
T1 - Chiral supported ionic liquid phase (CSILP) catalysts for greener asymmetric hydrogenation processes
AU - Podolean, Iunia
AU - Hardacre, Christopher
AU - Goodrich, Peter
AU - Brun, Nicolas
AU - Backov, Rénal
AU - Coman, Simona M.
AU - Parvulescu, Vasile I.
PY - 2013/2/1
Y1 - 2013/2/1
N2 - Chiral supported ionic liquid phase (CSILP) catalysts were prepared by physical adsorption (within highly porous carbons or mesoporous silica) of Ir, Ru and Rh complexes as IrCl(COD)-(S,S)-BDPP, [IrCl-(S)-BINAP]2, RuCl(p-cymene)[(S,S)-Ts-DPEN], RuOTf(p-cymene)[(S,S)-Ts-DPEN], [Rh(COD)(S,S)-DIPAMP][BF4], and [Rh(COD)(R,R)-Me-DuPHOS][BF 4]. For the syntheses of CSILP catalysts [EMIM][NTf2], [BMIM][BF4] and [BMIM][PF6] ionic liquids were used. Comparative homogeneous and heterogeneous experiments were carried out using the asymmetric hydrogenation of double CN and CC bonds in trimethylindolenine, 2-methylquinoline and dimethylitaconate, respectively. The conversion and enantioselectivity was found to depend on the nature of the complex (metal and ligand), the immobilization method used, nature of the ionic liquid, nature of the support and the experimental conditions.
AB - Chiral supported ionic liquid phase (CSILP) catalysts were prepared by physical adsorption (within highly porous carbons or mesoporous silica) of Ir, Ru and Rh complexes as IrCl(COD)-(S,S)-BDPP, [IrCl-(S)-BINAP]2, RuCl(p-cymene)[(S,S)-Ts-DPEN], RuOTf(p-cymene)[(S,S)-Ts-DPEN], [Rh(COD)(S,S)-DIPAMP][BF4], and [Rh(COD)(R,R)-Me-DuPHOS][BF 4]. For the syntheses of CSILP catalysts [EMIM][NTf2], [BMIM][BF4] and [BMIM][PF6] ionic liquids were used. Comparative homogeneous and heterogeneous experiments were carried out using the asymmetric hydrogenation of double CN and CC bonds in trimethylindolenine, 2-methylquinoline and dimethylitaconate, respectively. The conversion and enantioselectivity was found to depend on the nature of the complex (metal and ligand), the immobilization method used, nature of the ionic liquid, nature of the support and the experimental conditions.
KW - Asymmetric hydrogenation
KW - Carbonaceous foams
KW - Chiral complexes
KW - Ionic liquids
KW - MCM-41
UR - https://www.scopus.com/pages/publications/84870492992
U2 - 10.1016/j.cattod.2012.06.020
DO - 10.1016/j.cattod.2012.06.020
M3 - Article
AN - SCOPUS:84870492992
SN - 0920-5861
VL - 200
SP - 63
EP - 73
JO - Catalysis Today
JF - Catalysis Today
IS - 1
ER -