Tanabe, Tadashi; Okuda, Kazuo; Izumi, Yoshiharu published the artcile< Asymmetric hydrogenation of carbon-oxygen double bond with modified Raney nickel catalyst. XXV. Contributions of pH-adjusting reagents in asymmetric hydrogenation>, SDS of cas: 112-63-0, the main research area is asymmetric hydrogenation nickel; Raney asymmetric hydrogenation; pH Raney asymmetric hydrogenation.
In the asymmetric hydrogenation of Me acetoacetate with modified Raney Ni catalysts, the effect of pH-adjusting reagents were studied using DS-tartaric acid, Ls-2-hydroxyiosovaleric acid, L-glutamic acid, and L-aspartic acid as the modifying reagents. The effects of metal ions and ammonium ion were examined at pH 5.0. The asymmetric activity of the catalyst modified with the 2-hydroxy monocarboxylic acid or 2-amino dicarboxylic acid was not affected by the pH-adjusting reagents. However, 2-hydroxy dicarboxylic acid was markedly influenced by the reagents. The univalent metal ion was more effective than divalent or ammonium ions. Sodium hydroxide was the best pH-adjusting reagent. The adsorption state of the modifying reagent was discussed on the basis of the effects of the pH-adjusting reagent.
Bulletin of the Chemical Society of Japan published new progress about Hydrogenation. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics