The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about Studies of the effects of the modification conditions on the hydrogenation rate for the enantio-differentiating hydrogenation of methyl acetoacetate over a tartaric acid-NaBr-modified nickel catalyst, the main research direction is nickel tartaric acid sodium bromide catalyst enantioselectivity hydrogenation acetoacetate.SDS of cas: 53562-86-0.
The effects of modification conditions on the hydrogenation rate and the enantio-differentiating ability (e.d.a.) for hydrogenation of Me acetoacetate were studied, of (R,R)-tartaric acid-NaBr-in-situ-modified Ni catalyst. Tartaric acid treatment led to increased hydrogenation rate, irresp. of the presence of auxiliary modifier, NaBr. In the presence of tartaric acid, NaBr has two roles, i.e., Na+ activates the enantio-differentiating sites through interaction with tartaric acid, and Br- deactivates both the enantio-differentiating sites and non-enantio-differentiating sites. The e.d.a. and the hydrogenation rate are determined by the combination of these effects of Na+ and Br-.
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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics