Showing papers on "Nickel boride published in 1998"
TL;DR: In this article, the deoxygenation of a variety of acyclic sulfoxides and selenoxides has been reported with nickel boride in THF at 0-5°C in nearly quantitative yields.
46 citations
34 citations
3 citations
TL;DR: Deuterium localisation by [ 2 H] NMR in a chiral liquid crystal allows the analysis of the stereoselectivity of the reaction as mentioned in this paper. But the analysis is limited to the case of epibiotin sulfoxides.
2 citations
TL;DR: In this article, the authors investigated the influence of particle size and the effect of micellar components on the hydrogenating activity of nickel boride catalysts, and they showed that the presence of a mousellar system has an inhibiting effect on hydrogenation activity.
Abstract: Monodisperse nickel boride catalysts are prepared from reversed micellar systems in situ and used directly as the catalysts of styrene hydrogenation. In order to investigate the influence of particle size and the effect of micellar components on the hydrogenating activity of nickel boride catalysts, the hydrogenation of styrene over nickel boride catalysts has been done, respectively, in ethanol solution, reversed micellar solution and various mixtures of reversed micellar solution with ethanol. The experimental results have shown that monodisperse nickel boride particles exhibit higher hydrogenation activity than those prepared in ethanol solution. On the other hand, the presence of a micellar system has an inhibiting effect on the hydrogenation activity of nickel boride particles, and the inhibiting effect is discussed in detail.
1 citations
TL;DR: In this article, the deoxygenation of a variety of acyclic sulfoxides and selenoxides has been reported with nickel boride in THF at 0-5°C in nearly quantitative yields.
Abstract: The deoxygenations of a variety of acyclic sulfoxides and selenoxides have been reported with nickel boride in THF at 0–5°C in nearly quantitative yields. The deoxygenations are proposed to proceed by an oxidative-addition and reductive-elimination mechanism.