ChemInform Abstract: Enantioselective Catalysis. Part 4. Synthesis of N-Substituted (R,R)-3,4-Bis(diphenylphosphino)pyrrolidines. The Use of Their Rhodium Complexes for the Asymmetric Hydrogenation of α-(Acylamino)acrylic Acid Derivatives.

ChemInform ◽  
1987 ◽  
Vol 18 (11) ◽  
Author(s):  
U. NAGEL ◽  
E. KINZEL ◽  
J. ANDRADE ◽  
G. PRESCHER
Keyword(s):  
Acrylic Acid ◽  
Asymmetric Hydrogenation ◽  
Enantioselective Catalysis ◽  
Rhodium Complexes

Asymmetrische Katalysen, 13 [1]. Chelat-Liganden und ihre Rhodium-Komplexe mit seitlichen Asymmetriezentren und ihre Anwendung in der enantioselektiven Katalyse / Asymmetric Catalyses. 13 [1]. Chelate Ligands and their Rhodium Complexes with Lateral Asymmetrie Centers and their Use in Enantioselective Catalysis

1983 ◽  
Vol 38 (11) ◽  
pp. 1332-1338 ◽  
Author(s):  
Henri Brunner ◽  
A. F. M. Mokhlesur Rahman
Keyword(s):  
Cinnamic Acid ◽  
Asymmetric Hydrogenation ◽  
Optically Active ◽  
Enantioselective Catalysis ◽  
Rhodium Complexes ◽  
Chelate Ligands

Abstract The chelate ligands 1-3 with lateral asymmetric centers at the nitrogen atoms were prepared and characterized. In the Rh complexes 4 and 5 the asymmetric centers directly interact with those coordination positions where during enantioselective catalysis pro-chiral substrates are converted into optically active products. The compounds 4 and 5, as well as the in situ catalysts [Rh(COD)Cl]2/2 were used in the asymmetric hydrogenation of α-N[acetamino]cinnamic acid and in the asymmetric hydrosilylation of acetophenone with diphenylsilane. The low optical inductions obtained result from the catalyst loosing its chiral information during catalysis due to racemization or fragmentation.

Asymmetric hydrogenation in aqueous–organic two-phase solvent systems using rhodium complexes of sulphonated phosphines

1986 ◽  
Vol 0 (3) ◽  
pp. 202-203 ◽  
Author(s):  
Fabio Alario ◽  
Youssef Amrani ◽  
Yves Colleuille ◽  
Tuan Phat Dang ◽  
Jean Jenck ◽  
...  
Keyword(s):  
Asymmetric Hydrogenation ◽  
Rhodium Complexes ◽  
Two Phase ◽  
Solvent Systems

ChemInform Abstract: Rhodium Complexes of (R)-Me-CATPHOS and (R)-(S)-JOSIPHOS: Highly Enantioselective Catalysts for the Asymmetric Hydrogenation of (E)- and (Z)-β-Aryl-β-(enamido)phosphonates.

ChemInform ◽  
2009 ◽  
Vol 40 (48) ◽  
pp. no-no
Author(s):  
Simon Doherty ◽  
Julian G. Knight ◽  
Adam L. Bell ◽  
Shireen El-Menabawey ◽  
Christopher M. Vogels ◽  
...  
Keyword(s):  
Asymmetric Hydrogenation ◽  
Rhodium Complexes ◽  
Enantioselective Catalysts
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