1327154-07-3Relevant academic research and scientific papers
An alternative route to tethered Ru(II) transfer hydrogenation catalysts
Hodgkinson, Roy,Jur?ík, Václav,Nedden, Hans,Blackaby, Andrew,Wills, Martin
, p. 930 - 933 (2018)
A new route towards a series of tethered η6-arene/Ru(II) catalysts for use in the transfer and pressure hydrogenation of ketones and aldehydes to alcohols is reported. The route proceeds through the formation of an amide from the diamine precursor, followed by reduction, rather than the direct alkylation of the diamine. This has the advantage that dialkylation of the amine is avoided during the synthesis. Through this new route, both racemic and enantiomerically-pure η6-arene/Ru(II) tethered catalysts can be prepared in high yield.
COMPLEXES AND METHODS FOR THEIR PREPARATION
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Page/Page column 41, (2016/04/09)
The invention provides methods for the preparation of ligands for complexes, methods for preparing complexes and complexes having those ligands. Also provided is the use of a complex as a catalyst in a method of synthesis.
Cooperative catalysis: Combining an achiral metal catalyst with a chiral Br?nsted acid enables highly enantioselective hydrogenation of imines
Tang, Weijun,Johnston, Steven,Li, Chaoqun,Iggo, Jonathan A.,Bacsa, John,Xiao, Jianliang
supporting information, p. 14187 - 14193 (2013/11/06)
Asymmetric hydrogenation of imines leads directly to chiral amines, one of the most important structural units in chemical products, from pharmaceuticals to materials. However, highly effective catalysts are rare. This article reveals that combining an ac
PH-Regulated transfer hydrogenation of quinoxalines with a Cp*Ir-diamine catalyst in aqueous media
Tan, Jing,Tang, Weijun,Sun, Yawei,Jiang, Zhen,Chen, Fei,Xu, Lijin,Fan, Qinghua,Xiao, Jianliang
experimental part, p. 6206 - 6213 (2011/09/19)
The combination of [Cp*IrCl2]2 with N-(2-aminoethyl)-4-(trifluoromethyl)benzenesulfonamide constitutes an efficient catalyst for selective transfer hydrogenation of a variety of quinoxalines in water with HCOONa as the hydrogen source, affording the corresponding tetrahydroquinoxalines in good to excellent yields. The catalyst is air-stable, and the reduction could be performed without nitrogen protection. The aqueous phase reduction is shown to be highly pH-dependent, with acidic pH leading to better results. There exits a pH window for optimum rate, and the use of HOAc/NaOAc buffer solution is essential for maintaining a stable pH during the reaction.
