18890-22-7Relevant articles and documents
Enantioselective hydride transfer hydrogenation of ketones catalyzed by [(η6-p-cymene)Ru(amino acidato)Cl] and [(η6-p-cymene)Ru(amino acidato)]3(BF4)3 complexes
Kathó, ágnes,Carmona, Daniel,Viguri, Fernando,Remacha, Carlos D.,Kovács, J.ózsef,Joó, Ferenc,Oro, Luis A.
, p. 299 - 306 (2000)
The new complexes (RRuSC, SRuSC)-[(η6-pCym)Ru(L-Aze)Cl] (6a, b), (RRuSC, SRuSC)-[(η6-pCym)Ru(L-Pip)Cl] (7a, b), (RRuRRuRRuSCSCSCSNSNSN, SRuSRuSRuSCSCSCSNSNSN)-[{(η6-pCym)Ru(L-Aze)}3](BF4)3 (8a, b) and (RRuRRuRRuSCSCSCSNSNSN, SRuSRuSRuSCSCSCSNSNSN)-[{(η6-pCym)Ru(L-Pip)}3](BF4)3 (9a, b) (L-Aze=L-2-azetidinecarboxylate, L-Pip=L-2-piperidinecarboxylate) were prepared, characterized and used, together with the known [{(η6-pCym)Ru(L-Pro)}3](BF4)3, 5 and [{(η6-pCym)Ru(L-Ala)}3](BF4)3, 10 (L-Pro=L-prolinate, L-Ala=L-alaninate), in hydride transfer reduction of acetophenone, a series of substituted acetophenones and several other ketones with moderate to high conversions and enantioselectivities up to 86% e.e.
Development of a practical multikilogram production of (R)-seudenol by enzymatic resolution
Ter Halle,Bernet,Billard,Bufferne,Carlier,Delaitre,Flouzat,Humblot,Laigle,Lombard,Wilmouth
, p. 283 - 286 (2004)
Different enzymatic routes for the production of (R)-seudenol were investigated. The Novozym 435-catalyzed reaction of racemic seudenol with vinyl butyrate proved to be the most promising route. By using vinyl laurate as an acyl donor, (R)-seudenol laurat
Stereoselective anti -S N 2′-Substitutions of Secondary Alkylcopper-Zinc Reagents with Allylic Epoxides: Total Synthesis of (3 S,6 R,7 S)-Zingiberenol
Kicin, Bilal,Knochel, Paul,Kremsmair, Alexander,Ruf, Vincent,Saeb, Rakan,Skotnitzki, Juri
, p. 873 - 881 (2020/03/13)
Chiral secondary mixed alkylcopper-zinc reagents were prepared from the corresponding alkyl iodides and reacted with allylic epoxides via an anti -S N 2′-substitution and retention of configuration of the chiral alkylorganometallic, leading to
CHIRAL METAL COMPLEX COMPOUNDS
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Page/Page column 18; 19; 21; 23; 24; 29, (2018/11/10)
The invention comprises novel chiral metal complex compounds of the formula (I) wherein M, PR2, R3 and R4 are outlined in the description, its stereoisomers, in the form as a neutral complex or a complex cation with a suitable counter ion. The chiral metal complex compounds can be used in asymmetric reactions, particularly in asymmetric reductions of ketones, imines or oximes.