1461-12-7Relevant academic research and scientific papers
Asymmetric hydrogenation of α-ethylstyrenes catalyzed by chiral ruthenium complexes
Forman,Ohkuma,Hems,Noyori
, p. 9471 - 9475 (2000)
A combined system of RuCl2[(R,R)-Me-DuPhos](dmf)(n) and t-C4H9OK catalyzes the asymmetric hydrogenation of α-ethylstyrene derivatives. The reaction proceeds with a substrate to catalyst molar ratio of up to 2600 in 2-propanol at 8 atm and room temperature to give the chiral saturated products in 81-89% ee. (C) 2000 Elsevier Science Ltd.
Diphenylamine-amine-oxazoline ligand, synthesis method as well as metal complex and application thereof
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Paragraph 0105; 0106; 0108; 0109; 0110; 0111; 0112; 0113, (2019/04/17)
The invention provides a diphenylamine-amine-oxazoline ligand which is a compound of formula (1) or an antipode or racemate of the compound of formula (1), wherein R1 and R2 are respectively and separately one of C1 to C10 hydrocarbon group, benzyl group, phenyl group or substituted phenyl group and heteroaryl group; and R3 is H or methyl. The invention also discloses a synthesis method as well asa metal complex and application thereof, which aims at providing a catalyst capable of realizing high synthesis yield by virtue of a simple synthesis route, and ensuring that the catalyst has very high catalytic activity in asymmetric hydrogenation and hydrogen transfer reactions of olefins and ketones.
Propylene carbonate as a solvent for asymmetric hydrogenations
Bayardon, Jerome,Holz, Jens,Schaeffner, Benjamin,Andrushko, Vasyl,Verevkin, Sergej,Preetz, Angelika,Boerner, Armin
, p. 5971 - 5974 (2008/09/17)
(Figure Presented) A penny saved is a penny earned: The use of propylene carbonate as the solvent in iridium-catalyzed hydrogenations of non-functionalized olefins allows efficient catalyst recycling through the formation of two-phase mixtures with nonpolar solvents such as n-hexane. In the picture, the hydrogenated tetrahydronaphthalene derivative is extracted into the hydrocarbon phase.
Iridium-catalyzed enantioselective hydrogenation of terminal alkenes
McIntyre, Steven,Hoermann, Esther,Menges, Frederik,Smidt, Sebastian P.,Pfaltz, Andreas
, p. 282 - 288 (2007/10/03)
Iridium complexes derived from chiral P,N ligands are efficient catalysts for the enantioselective hydrogenation of 2-aryl-substituted terminal alkenes. Using 0.1-1 mol % of catalyst at room temperature and ambient hydrogen pressure, high enantioselectivi
