15 research outputs found
Efficient Resolution of Racemic N-Benzyl beta-3-Amino Acids by Iterative Liquid-Liquid Extraction with a Chiral (Salen)Cobalt(III) Complex as Enantioselective Selector
No full textEfficient Resolution of Racemic N-Benzyl beta3-Amino Acids by Iterative Liquid-Liquid Extraction with a Chiral (Salen)Cobalt(III) Complex as Enantioselective Selector
No full textThe efficient (up to 93% ee) resolution of racemic N-benzyl beta3-amino acids has been achieved by an iterative (two cycle) liquid-liquid extraction process using a lipophilic chiral (salen)cobalt(III) complex [CoIII(1)(OAc)]. As a result of the resolution by extraction, one enantiomer of the N-benzyl beta3-amino acid predominated in the aqueous phase, while the other enantiomer was driven into the organic phase by complexation to cobalt. The complexed amino acid was then quantitatively released into an aqueous phase, by a reductive (CoIII \u2192 CoII) counter-extraction using L-ascorbic acid. The reductive cleavage allowed for the recovery of the Cobalt(II) selector in up to 90% yield (easily re-oxidable to CoIII with air/AcOH)
Resolution of racemic N-benzyl-\u3b23-homophenylglycine by iterative liquid-liquid extraction using a chiral cobalt(III) salen complex as enantioselective selector
No full textResolution of Racemic N-Benzyl alpha-Amino Acids by Liquid-Liquid Extraction: a Practical Method Using a Lipophilic Chiral Cobalt(III) Salen Complex and Mechanistic Studies
No full textScalable Enantioseparation of Amino Acid Derivatives Using Continuous Liquid−Liquid Extraction in a Cascade of Centrifugal Contactor Separators
No full textReactive Extraction of Enantiomers of 1,2-Amino Alcohols via Stereoselective Thermodynamic and Kinetic Processes
No full textA Multidimensional Undergraduate Experiment for Easy Solution and Surface Sensing of Mercury(II) and Copper(II) Metal Cations
No full textEnantioselective Liquid–Liquid Extractions of Underivatized General Amino Acids with a Chiral Ketone Extractant
No full textExperimental and Modeling Studies on the Enantioselective Extraction of Hydrophobic Pranoprofen Enantiomers with Hydrophilic β-Cyclodextrin as Selectors
No full textCobalt–Salen Complexes as Catalyst Precursors for Electrocatalytic Water Oxidation at Low Overpotential
No full text
