Université de Neuchâtel

Artificial metalloenzymes for enantioselective catalysis : the phenomenon of protein accelerated catalysis

Collot, Jérôme ; Humbert, Nicolas ; Skander, Myriem ; Klein, Gérard ; Ward, Thomas R.

In: Journal of Organometallic Chemistry, 2005, vol. 689, p. 4868-4871

We report on the phenomenon of protein-accelerated catalysis in the field of artificial metalloenzymes based on the non-covalent incorporation of biotinylated rhodium–diphosphine complexes in (strept)avidin as host proteins. By incrementally varying the [Rh(COD)(Biot-1)]+ vs. (strept)avidin ratio, we show that the enantiomeric excess of the produced acetamidoalanine decreases slowly....

Université de Neuchâtel

Water-Soluble Arene Ruthenium Complexes Containing a trans-1,2-Diaminocyclohexane Ligand as Enantioselective Transfer Hydrogenation Catalysts in Aqueous Solution

Canivet, Jérôme ; Labat, Gael ; Stoeckli-Evans, Helen ; Süss-Fink, Georg

In: European Journal of Inorganic Chemistry, 2005, vol. 22, p. 4493 - 4500

The cationic chloro complexes [(arene)Ru(H2N∩NH2)Cl]+ (1: arene = C6H6; 2: arene = p-MeC6H4iPr; 3: arene = C6Me6) have been synthesised from the corresponding arene ruthenium dichloride dimers and enantiopure (R,R or S,S)...

Université de Neuchâtel

Water-Soluble Phenanthroline Complexes of Rhodium, Iridium and Ruthenium for the Regeneration of NADH in the Enzymatic Reduction of Ketones

Canivet, Jérôme ; Süss-Fink, Georg ; Štěpnička, Petr

In: European Journal of Inorganic Chemistry, 2007, vol. 30, p. 4736 - 4742

The nicotinamide coenzyme NADH, consumed in enantioselective reduction of ketones catalysed by alcohol dehydrogenases, needs to be regenerated in order to maintain enzymatic activity. We therefore studied the catalytic potential of the cationic complexes [(η5-C5Me5)Rh(N∩N)Cl]+ (1: N∩N = 1,10-phenanthroline; 2: N∩N =...