Hans Günter Nedden

TL;DR: The design, synthesis and applications of tethered versions of the Ru(II)/N-tosyl- 1,2-diphenylethylene-1, 2-diamine (TsDPEN) class of catalyst that are commonly used for asymmetric transfer hydrogenation and asymmetric hydrogenation of ketones and imines are described.

TL;DR: In this paper, an improved method for the synthesis of tethered ruthenium(II) complexes of monosulfonylated diamines is described, together with their application to the hydrogenation of ketones and aldehydes.

TL;DR: A series of enantiopure Ru(II) complexes containing a chiral diamine and η6-arene connected by a tethering group have been prepared and were evaluated in the asymmetric reductions of a range of ketones.

TL;DR: In this article, the reduction of commercial-grade aldehydes to primary alcohols is achieved with cis-[RuCl2(ampy)(PP)] [ampy=2-(aminomethyl)pyridine; PP=1,4-bis(diphenylphosphino)butane, 1,1′-ferrocenediyl-bis (diphosphine) and pincer [RuCl(CNNR)(PP] by transfer hydrogenation and hydrogenation reactions.

TL;DR: In this paper, aldehydes were chemoselectively reduced to primary alcohols by using HCOONH4 as the hydrogen donor through transfer hydrogenation catalyzed by benzo[h]quinoline pincer complexes RuCl(CNNPh)(PP) at substrate to catalyst molar ratios of 2000 to 20,000.