Titlebook: Chiral Reactions in Heterogeneous Catalysis; Georges Jannes,Vincent Dubois Book 1995 Springer Science+Business Media New York 1995 Drogen.

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Asymmetric Hydrogenation of Ethyl Pyruvate Using Ptcontaining Zeolites Modified With (-)-Cinchonidinion of ethyl pyruvate to ethyl lactate. The catalysts based on Y and ZSM-35 zeolites show the highest enantioselectivity. To obtain the highest reaction rates and the optical yields the Pt content should be around 5 wt%.Enantiomeric excess is strongly influenced by the type of solvent used and can b

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Enzymatic Resolution of Biologically Active Precursors Versus Asymmetric Induction in Heterogeneous is of its cyclohexyl moiety. Some strategies, especially for the enantiomerically pure fragment are brilliant pieces of organic synthesis, although somewhat elaborate [3]. The average number of steps equals ten, some approaches using enantiopure educts. The classical way to such cyclohexyl fragments

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intrigue

Restricted Geometric Relationshipsof 72% optical purity was obtained by optimizing the reaction variables and modification variables. The degree of the intrinsic enantio-differentiating ability of the adsorbed tartaric acid for 2-butanone was supposed to be similar to the abilities of tartaric acid for higher 2-alkanones.

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Similarities Between Attributesof estrone and estrone-3-methyl ether [1]. The complex catalysts chiral hydrosilane-rhodium-( +)- or (-)-DIOP or (+)- or (-)-BINAP allowed different stereoselectivities in the formation of the 17α- and 17β-alcohols.

漂浮

Why a new semantics for extended programs?,s modified by cinchona alkaloids, are critically reviewed and compared. The characteristics and the implicit contradictions of the models are discussed in the light of relevant experimental observations.

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Antioxidant