(236) Selective Hydrogenation of Ergosterol
نویسندگان
چکیده
منابع مشابه
Selective hydrogenation of nitroaromatics by ceria nanorods.
Ceria (CeO2) nanorods with well-defined surface planes can be synthesized and utilized for the hydrogenation of nitroaromatics. The CeO2 nanorods containing a {110} plane can efficiently and selectively catalyse the hydrogenation of nitroaromatics with N2H4 as a reducing agent, while nano-ceria with a {100} or {111} plane shows poor performance for the reaction.
متن کاملSelective Hydrogenation With Copper Catalysts: II. Kinetics
To explain the unusually high selectivity of copper catalysts toward linolenate, model compounds were hydrogenated (150 C and atmospheric pressure) and the reaction products analyzed. Products varied depending upon location of the double bonds. Monoenes were not reduced by copper chromite except when the double bond was next to a carboxyl group. Dienes with isolated double bonds also were not r...
متن کاملSelective Hydrogenation With Copper Catalysts: 1. Isolation and Identification of Isomers Formed During Hydrogenation of Linolenate
Methyl linolenate was hydrogenated with 1050 copper chromite catalyst at 150 C and atmospheric hydrogen pressure. The product was separated into monoene, diene and triene fractions by countercurrent distribution. These fractions were further separated into "arious geometrical isomers. The double bond location in the "arious fractions was determined b" reductiw ozonolysis. Double bonus in both c...
متن کاملSelective Hydrogenation of Acetylene over Palladium in Ultra High Vacuum
Under ultra-high-vacuum conditions, precoverage of a palladium(ll1) surface with hydrogen does not affect either the kinetics or the extent of acetylene uptake at 175 K. The subsequent reactive behavior of the system is however radically altered. Benzene formation is strongly suppressed, the transformation of adsorbed acetylene to another species (@-phase) is enhanced, and the yield of ethylene...
متن کاملSelective hydrogenation of nitroarenes using an electrogenerated polyoxometalate redox mediator.
The 2-electron reduced form of the polyoxometalate silicotungstic acid (H4[SiW12O4]) is shown to be an effective and selective hydrogenation agent for a range of nitroarenes without the need for any co-catalyst. The ease of generation of the active species and its recyclability suggest that a new approach to this important class of chemical conversions is possible.
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ژورنال
عنوان ژورنال: The Journal of the Society of Chemical Industry, Japan
سال: 1955
ISSN: 0023-2734,2185-0860
DOI: 10.1246/nikkashi1898.58.718