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Showing 1 to 6 of 6 for “"Cyanohydrins"”.
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Auxiliares quirales derivados de carbohidratos: Nuevas aplicaciones
… reactions, along with the synthesis of cyanohydrins, processes where the use of carbohydrates as chiral auxiliaries has been scarcely explored. Thus, the featured results constitute original solutions and a new concept of the use of carbohydrates in the aforementioned areas, describing a …
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Requirements for Cell-Free Cyanide Oxidation by Pseudomonas Fluorescens NCIMB 11764
… the consumption of free cyanide arising from the cyanohydrins via chemical dissociation. Thus, free cyanide remains the substrate, for which the enzyme displays a remarkably high affinity (Kmapp,4 mM). A model for cyanide utilization is therefore envisioned in which the substrate is initially …
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Removal of Cyanogenic Glycosides in Whole Flaxseed via Lactobacillaceae Fermentation
… Cyanogenic glycosides are metabolized to cyanohydrins by the action of the enzymes beta-glucosidase and hydroxynitrile lyase which first cleave glucose from CG then release hydrogen cyanide (HCN) from the cyanohydrin, respectively. Hydrogen cyanide can affect mammalian respiratory systems …
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Synthesis, study and application of silyl ketene imines in Lewis base catalyzed carbonyl addition
… N-silyl oxyketene imines derived from protected cyanohydrins has been developed. These nucleophiles serve as acyl anion equivalents in Lewis base catalyzed aldol addition reactions and allow for the preparation of cross-benzoin and glycolate-aldol products in high yield and with exceptional …
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Síntesis de precursores farmacéuticos enantioméricamente puros mediante métodos biocatalíticos
… center in ketone-derived benzo-fused cyclic cyanohydrins¿ Tetrahedron: Asymmetry, 2011, 22, 1218¿1224. En el tercer capítulo, se ha llevado a cabo la síntesis y resolución enzimática de trans-3,4-dihidroxipirrolidinas mediante procesos de acilación enzimática o hidrólisis de sus derivados, …
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Novel synthetic methodology employing transition metal catalysed reactions of α-diazo-β-keto sulfonamides and α-cyano-α-diazoacetates; the impact of substituents on the reaction pathway
… cyclopropanation of oxa-azulenones and cyanohydrins from reaction with adventitious water. Critically, the extent of formation of the overcyclopropanation product and cyanohydrin could be controlled by changing the reaction concentration and rigorously pre-drying the rhodium catalyst and …