Asymmetric Hydrogenation of C=O Double Bond with Modified Raney Nickel. XI
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This article is published in Bulletin of the Chemical Society of Japan.The article was published on 1969-01-01 and is currently open access. It has received 27 citations till now. The article focuses on the topics: Raney nickel & Double bond.read more
Citations
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Book ChapterDOI
Modified Raney nickel (MRNi) catalyst: heterogeneous enantio-differentiating (asymmetric) catalyst
TL;DR: In this article, a modified Raney nickel (RNi) with optically active compounds has been investigated and it is endowed with the new function of enantio-face-differentiation (asymmetric) in addition to the function of hydrogenation.
Journal ArticleDOI
Levulinic acid in organic synthesis
TL;DR: The wide synthetic potential of levulinic acid, particularly as a key compound in the synthesis of various heterocyclic systems, saturated and unsaturated ketones and diketones, difficultly accessible acids and other compounds is demonstrated in this article.
Journal ArticleDOI
Methods of Asymmetric Synthesis—Enantioselective Catalytic Hydrogenation
TL;DR: In this article, it was proposed that asymmetric syntheses be divided into enanti-and diastereoselective syntheses, based on the relationship between the enantioselectivity of the catalyst and the structure of the chiral compound used to modify it.
Journal ArticleDOI
Progress of enantio-differentiating hydrogenation of prochiral ketones over asymmetrically modified nickel catalysts and a newly proposed enantio-differentiation model
TL;DR: In this article, the enantio-differentiating hydrogenation of various prochiral ketones over asymmetrically modified Ni catalysts is discussed and the state of the art of the modified Ni catalyst is surveyed.
Journal ArticleDOI
Induction of Asymmetry by Amino Acids
TL;DR: Amino acids have been used more and more frequently as auxiliary agents or educts in asymmetric syntheses as discussed by the authors, but only about 20% have so far been used in sterically pure form.
References
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Journal ArticleDOI
Asymmetric Hydrogenation with Modified Raney Nickel. III. Studies of the Modified Hydrogenation Catalyst. IV
Journal ArticleDOI
Studies on Modified Hydrogenation Catalyst. I. Selective Hydrogenation Activity of Modified Raney Nickel Catalyst for Carbonyl Group and C=C Double Bond
TL;DR: The effect of conditions of modification, such as concentration of the modifying solution, immersion time and kind of modifying reagent on the activity of the modified catalyst, were investigated in this paper.
Journal ArticleDOI
Synthesen mit Acetessigsäure‐tert.‐butylester
Alfred Treibs,Karl Hintermeier +1 more
TL;DR: The α-substituierten Acetessig-saure-tert.-butylester gehen beim Erhitzen mit geringen Mengen katalytisch wirksamer p-Toluolsulfonsaure unter Abspaltung von Isobutylen und Kohlendioxyd in Ketone uber, die sich so in einfacher Weise darstellen lassen as mentioned in this paper.
Journal ArticleDOI
Asymmetric Hydrogenation with Modified Raney Nickel. VIII
TL;DR: Asymmetric hydrogenation catalysts were prepared by modifying Raney nickel with aqueous solutions of D-tartaric acid, monomethyl D-Tartrate, L-erythro- and D-threo-2, 3-dihydroxybutyric acid, Lmalic acid and L-methyl-succinic acid as discussed by the authors.