Wang, Hou published the artcileEnantioseparation of amino acid and mandelic acid enantiomers using Garphos derivatives as chiral extractants, Application of 2-Hydroxy-2-phenylacetic acid, the publication is Chirality (2022), 34(9), 1239-1246, database is CAplus and MEDLINE.
In this paper, Garphos with different substituents were employed as chiral extractants to enantiosep. racemic amino acid and mandelic acid. The influences of metal precursors, pH of aqueous solution, Garphos-metal concentration, extraction temperature, and substituent effect on extraction were investigated. The results indicated that the substituent groups significantly affected the π-π interaction between extractant and substrate. And the separation factors (α) for Garphos could be remarkably improved by regulating substituent groups. Garphos-II-Pd, Garphos-VI-Pd, Garphos-III-Pd, Garphos-I-Cu, Garphos-VI-Cu, and Garphos-V-Pd were the most efficient extractants for phenylalanine (Phe), homophenylalanine (Hphe), 4-nitrophenylalanine (Nphe), 3-chlorophenylglycine (Cpheg), mandelic acid (MA), and 2-chlormandelic acid (CMA) with α values of 2.40, 2.37, 5.37, 1.59, 5.98, and 3.69, resp. This work provided an important reference for the design of efficient chiral extractants in future work.
Chirality published new progress about 90-64-2. 90-64-2 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Alcohol,Natural product, name is 2-Hydroxy-2-phenylacetic acid, and the molecular formula is C21H20BrNO4S, Application of 2-Hydroxy-2-phenylacetic acid.
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