SDS of cas: 53562-86-0. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about Influence of Synthesis Conditions on the Structure of Nickel Nanoparticles and their Reactivity in Selective Asymmetric Hydrogenation. Author is Arrigo, Rosa; Gallarati, Simone; Schuster, Manfred E.; Seymour, Jake M.; Gianolio, Diego; da Silva, Ivan; Callison, June; Feng, Haosheng; Proctor, John E.; Ferrer, Pilar; Venturini, Federica; Grinter, David; Held, Georg.
Unsupported and SiO2-supported Ni nanoparticles (NPs) were synthesized via hot-injection colloidal route using oleylamine (OAm) and trioctylphosphine (TOP) as reducing and protective agents, resp. By adopting a multi-length scale(coating process) structural characterization, it was found that by changing equivalent of OAm and TOP not only the size of the nanoparticles is affected but also the Ni electronic structure. The synthesized NPs were modified with (R,R)-tartaric acid (TA) and investigated in the asym. hydrogenation of Me acetoacetate to chiral methyl-3-hydroxy butyrate. The comparative anal. of structure and catalytic performance for the synthesized catalysts has enabled us to identify a Ni metallic active surface, whereby the activity increases with the size of the metallic domains. Conversely, at the high conversion obtained for the unsupported NPs there was no impact of particle size on the selectivity. (R)-selectivity was very high only on catalysts containing pos. charged Ni species such as over the SiO2-supported NiO NPs. This work shows that the chiral modification of metallic Ni NPs with TA is insufficient to maintain high selectivity towards the (R)-enantiomer at long reaction times and provides guidance for the engineering of long-term stable enantioselective catalysts.
When you point to this article, it is believed that you are also very interested in this compound(53562-86-0)SDS of cas: 53562-86-0 and due to space limitations, I can only present the most important information.
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics