1
|
Zhu B, Qiu H, Ma C, Chen S, Zhu J, Tong S. Recent progress on chiral extractants for enantioselective liquid-liquid extraction. J Chromatogr A 2023; 1709:464389. [PMID: 37741223 DOI: 10.1016/j.chroma.2023.464389] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/16/2023] [Accepted: 09/16/2023] [Indexed: 09/25/2023]
Abstract
As the demand for enantiopure compounds increases, chiral separation has become increasingly important in many fields. Enantioselective liquid-liquid extraction is an up-and-coming technology for enantiomeric separation because it is highly efficient and easy to be scaled up. The key factor for enantioselective liquid-liquid extraction is the development of novel chiral extractants with high enantiorecognition performance. With successful studies on catalytically active metal complexes as chiral extractants, novel chiral extractants can be screened and designed from the field of asymmetric catalysis. Chiral ionic liquids, sulfobutylether-β-cyclodextrins bonded magnetic nanoparticles and 2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (SPINOL) based phosphoric acid host show unique potential ability in enantioselective liquid-liquid extraction and they deserve further study. Brief principles, extraction equipment and solvent systems in enantioselective liquid-liquid extraction are presented in the present paper, and recent progress in development of new chiral extractants in the past decade is mainly reviewed, including metal complexes, cyclodextrins, ionic liquids, tartrate acids and crown ethers.
Collapse
Affiliation(s)
- Beibei Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Moganshan Campus, Gongda Road 1, Huzhou 313200, China
| | - Huiyun Qiu
- College of Pharmaceutical Science, Zhejiang University of Technology, Moganshan Campus, Gongda Road 1, Huzhou 313200, China
| | - Chenlei Ma
- College of Pharmaceutical Science, Zhejiang University of Technology, Moganshan Campus, Gongda Road 1, Huzhou 313200, China
| | - Songlin Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Moganshan Campus, Gongda Road 1, Huzhou 313200, China
| | - Junchao Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Moganshan Campus, Gongda Road 1, Huzhou 313200, China
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Moganshan Campus, Gongda Road 1, Huzhou 313200, China.
| |
Collapse
|
2
|
Wang H, Yang Y, Qin S, Hu K, Zhong C, Ouyang J, Liu X. Enantioseparation of amino acid and mandelic acid enantiomers using Josiphos-metal complexes as chiral extractants. Chirality 2023; 35:256-265. [PMID: 36659867 DOI: 10.1002/chir.23534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/21/2023]
Abstract
The development of new and efficient chiral extractants has always been the research hotspot and difficulty in the field of chiral extraction. Josiphos, a famous ferrocene derivative catalyst, is employed as a chiral extractant in enantioseparation of amino acid and mandelic acid enantiomers. The influences of metal ions, organic solvents, pH of the aqueous solution, extractant concentrations, and extraction temperature on enantioselectivities are systematically studied. The result reveals that Josiphos-Pd has good capabilities to enantioseparate 4-nitro-phenylalanine (Nphe), 3-chloro-phenylglycine (Cpheg), and mandelic acid (MA) with separation factors (α) of 3.30, 2.65, and 2.18, respectively. The pH of the aqueous phase and Josiphos-Pd concentration affect the extraction significantly, whereas extraction temperature shows little influence. After optimizing by response surface method, the mathematical models for extractions are established. And the highest experimental performance factors (pf) for Nphe, Cpheg, and MA are 0.1843, 0.1335, and 0.08884, respectively.
Collapse
Affiliation(s)
- Hou Wang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Yanning Yang
- Hunan veterinary medicine and feed Supervision Institute, Changsha, Hunan, China
| | - Shuping Qin
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Kangyu Hu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Changyuan Zhong
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Junying Ouyang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Xiong Liu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| |
Collapse
|
3
|
Wang H, Yang Y, Chen S, Xiao W, Hu K, Zhong C, Ouyang J, Liu X. Enantioseparation of amino acid and mandelic acid enantiomers using Garphos derivatives as chiral extractants. Chirality 2022; 34:1239-1246. [PMID: 35689412 DOI: 10.1002/chir.23484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/21/2022] [Accepted: 06/02/2022] [Indexed: 11/11/2022]
Abstract
In this paper, Garphos with different substituents were employed as chiral extractants to enantioseparate 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, respectively. This work provided an important reference for the design of efficient chiral extractants in future work.
Collapse
Affiliation(s)
- Hou Wang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Yanning Yang
- Hunan veterinary medicine and feed Supervision Institute, Changsha, Hunan, China
| | - Shuhuan Chen
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Wenjie Xiao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Kangyu Hu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Changyuan Zhong
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Junying Ouyang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Xiong Liu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| |
Collapse
|
4
|
Xiao W, Chen S, Liu X, Ma Y. Investigation of Taniaphos as a chiral selector in chiral extraction of amino acid enantiomers. Chirality 2021; 33:292-302. [PMID: 33763900 DOI: 10.1002/chir.23309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 01/19/2023]
Abstract
Finding chiral selector with high stereoselectivity to a variety of amino acid enantiomers remains a challenge and warrants further research. In this work, Taniaphos, a chiral ligand with rotatable spatial configuration, was employed as a chiral extractant to enantioseparate various amino acid enantiomers. Phenylalanine (Phe), homophenylalanine (Hphe), 4-nitrophenylalanine (Nphe), and 3-chloro-phenylglycine (Cpheg) were used as substrates to evaluate the extraction efficiency. The results revealed that Taniaphos-Cu exhibited good abilities to enantioseparate Phe, Hphe, Nphe, and Cpheg with the highest separation factors (α) of 3.13, 2.10, 2.32, and 2.14, respectively. Taniaphos-Cu is more conducive to combine with D-amino acid in extraction. The influences of pH, Taniaphos-Cu, and concentration and extraction temperature on extraction were comprehensively evaluated. The highest performance factors (pf) for Phe, Hphe, Nphe, and Cpheg at optimal extraction conditions were 0.08892, 0.1250, 0.09621, and 0.08021, respectively. The recognition mechanism between Taniaphos-Cu and amino acid enantiomers was discussed. The coordination interaction between Taniaphos-Cu and COO- , π-π interaction between Taniaphos-Cu and amino acid enantiomers are important acting forces in chiral extraction. The steric-hindrance between NH2 and OH lead to Taniaphos-Cu-D-Phe is more stable than Taniaphos-Cu-L-Phe. This work provided a chiral extractant that has good abilities to enantioseparate various amino acid enantiomers.
Collapse
Affiliation(s)
- Wenjie Xiao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Shuhuan Chen
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Xiong Liu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| | - Yu Ma
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
| |
Collapse
|
5
|
Enantioseparation of 3-Chlorophenylglycine enantiomers using Mandyphos-Pd as chiral extractant. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
Huang H, Jin Y, Shirbhate ME, Kang D, Choi M, Chen Q, Kim Y, Kim SJ, Byun IS, Wang M, Bouffard J, Kim SK, Kim KM. Enantioselective extraction of unprotected amino acids coupled with racemization. Nat Commun 2021; 12:125. [PMID: 33402682 PMCID: PMC7785727 DOI: 10.1038/s41467-020-20402-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 11/23/2020] [Indexed: 11/23/2022] Open
Abstract
Scalable and economical methods for the production of optically pure amino acids, both natural and unnatural, are essential for their use as synthetic building blocks. Currently, enzymatic dynamic kinetic resolution (DKR) underpins some of the most effective processes. Here we report the development of enantioselective extraction coupled with racemization (EECR) for the chirality conversion of underivatized amino acids. In this process, the catalytic racemization of amino acids in a basic aqueous solution is coupled with the selective extraction of one enantiomer into an organic layer. Back-extraction from the organic layer to an acidic aqueous solution then completes the deracemization of the amino acid. The automation of the EECR process in a recycling flow reactor is also demonstrated. Continuous EECR is made possible by the sterically hindered chiral ketone extractant 5, which prevents the coextraction of the copper racemization catalyst because of its nonplanar geometry. Furthermore, the extractant 5 unexpectedly forms imines with amino acids faster and with greater enantioselectivity than less bulky derivatives, even though 5 cannot participate in intramolecular resonance-assisted hydrogen bonding. These features may allow EECR to challenge the preponderance of enzymatic DKR in the production of enantiomerically enriched amino acids. Dynamic kinetic resolution is a common approach for the preparation of optically pure amino acids using enzymes. Here the authors report an alternative method based on enantioselective extraction coupled with racemization, in which a bulky extractant affords hydrophobic extractable imines with amino acids rapidly, reversibly and enantioselectively.
Collapse
Affiliation(s)
- Haofei Huang
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, People's Republic of China.,Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Yingji Jin
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Mukesh E Shirbhate
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Dayoung Kang
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Misun Choi
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Qian Chen
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Youngmee Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Sung-Jin Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Il-Suk Byun
- Aminologics Co., R&D Center, Cheongju-si, Chungcheongbuk-do, 28158, Korea
| | - Ming Wang
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, People's Republic of China
| | - Jean Bouffard
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea.
| | - Seong Kyu Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea.
| | - Kwan Mook Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea.
| |
Collapse
|
7
|
Liu X, Chen S, Ma Y, Xiao W. Enantioseparation of 4-Nitrophenylalanine using (S)-SDP-metal complex as chiral extractant. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116547] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
8
|
Liu X, Ma Y, Cao T, Jiang SP, Yang PY. Chiral extraction of amino acid enantiomers using (S)-SEGPHOS-metal complexes as extractants. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00970-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|