Enantioseparation of mandelic acid and alpha-cyclohexylmandelic acid using an alcohol/salt-based aqueous two-phase system
文献类型: 外文期刊
第一作者: Li, Fen-Fang
作者: Li, Fen-Fang;Tan, Zhi-Jian;Guo, Zhi-Feng;Tan, Zhi-Jian
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关键词: alcohol/salt aqueous two-phase system;chiral separation;enantiomers;sulfonated beta-cyclodextrin
期刊名称:CHEMICAL PAPERS ( 影响因子:2.097; 五年影响因子:1.831 )
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收录情况: SCI
摘要: An alcohol/salt-based aqueous two-phase system (ATPS) was employed for enantioseparation of (R,S)-mandelic acid (MA) and (R,S)-alpha-cyclohexylmandelic acid (alpha-CHMA). Sulfonated beta-cyclodextrin (Sf-beta-CD) with different degrees of substitution (DS) was considered as the chiral selector. The ethanol/(NH4)(2)SO4 system showed the optimal chiral recognition ability for MA. To optimize the experimental conditions, Sf-beta-CD concentration, ethanol and salt concentration, temperature, and pH were studied. The recognition ability of enantiomers was mainly dependent on the type of the chiral selector but the ethanol and (NH4)(2)SO4 concentrations also had significant influence on the enantiomeric recognition. The maximum values of alpha and ee (up) of 1.69 and 16.3 % were obtained, respectively, for MA under the optimal conditions. A potential application of this alcohol/salt ATPS is the scale-up of chiral separation of MA.
分类号: O6
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