Enantioselective hydrogen transfer hydrogenation on rhodium colloid systems with optically active stabilizers

Asymmetric transfer hydrogenation of ketones using Ru(0) nanoparticles modified by Chiral Thiones

“…The binding of the chiral ligands would affect the environment of the active centre for catalysis, thus yielding alcohols with some ee. This binding of the chiral ligands can take place through coordination of the S to the surface similar to the binding of cinchonidine on Pt(0) NPs or binding of chiral PNNP ligands on Fe(0) NPs and various N ‐donor ligands on Ru(0) NPs …”

“…Similarly, Nindakova et al . carried out ATH of acetophenone and methyl benzoylformate using Rh NPs formed in‐situ by the reduction of rhodium complexes in the presence of diamines, and cinchonidine, and obtained modest enantioselectivity . In‐situ reduction of chiral transition metal complexes is another method of obtaining catalytically active chiral NPs.…”

Rhodium nanoparticles inside well-defined unimolecular amphiphilic polymeric nanoreactors: synthesis and biphasic hydrogenation catalysis

“…86 There are also a few reports on the Rh NP-catalysed transfer hydrogenation of acetophenone by isopropanol, focusing on enantioselectivity, where no ring hydrogenation was mentioned. [105][106][107] For the RhNP@CCM-N-0.1 catalyst, the acetophenone reduction appears faster for P/Rh ¼ 4 (cf. entries 4-6 with 1-3).…”

Cobalt‐Catalyzed Chemoselective Transfer Hydrogenation of C=C and C=O Bonds with Alkanols

“…Generally, to achieve an effective transformation, a solvent scale of alkanol and basic condition are required . On the other hand, while the noble metal‐based catalysts, such as iridium,, ruthenium,, rhodium,, palladium, etc., have been extensively explored, reports on those of environmentally benign non‐noble ones were more appealing. Iron complex was developed by the Morris [6] and Knölker groups, respectively, and exhibited high efficiency in the transfer hydrogenation, which was unambiguously proposed to react by an outer‐sphere pathway involving metal‐ligand cooperativity .…”