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Inan A, Sünbül AB, Çaylar M, Uruş S, Orhan Z, Köse M, Ispir E. Highly Effective Aldose Reductase Mimetics: Catalytic Transfer Hydrogenation of D-Glucose to D-Sorbitol with Novel Azo-Azomethine Based Ru(II) Complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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2
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De S, Jain A, Barman P. Recent Advances in the Catalytic Applications of Chiral Schiff‐Base Ligands and Metal Complexes in Asymmetric Organic Transformations. ChemistrySelect 2022. [DOI: 10.1002/slct.202104334] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Soumik De
- Department of Chemistry National Institute of Technology Silchar Assam India
| | - Abhinav Jain
- Department of Chemistry National Institute of Technology Silchar Assam India
| | - Pranjit Barman
- Department of Chemistry National Institute of Technology Silchar Assam India
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Zhang L, Zhang L, Chen Q, Li L, Jiang J, Sun H, Zhao C, Yang Y, Li C. Cinchona-Alkaloid-Derived NNP Ligand for Iridium-Catalyzed Asymmetric Hydrogenation of Ketones. Org Lett 2021; 24:415-419. [PMID: 34941269 DOI: 10.1021/acs.orglett.1c04101] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Most ligands applied for asymmetric hydrogenation are synthesized via multistep reactions with expensive chemical reagents. Herein, a series of novel and easily accessed cinchona-alkaloid-based NNP ligands have been developed in two steps. By combining [Ir(COD)Cl]2, 39 ketones including aromatic, heteroaryl, and alkyl ketones have been hydrogenated, all affording valuable chiral alcohols with 96.0-99.9% ee. A plausible reaction mechanism was discussed by NMR, HRMS, and DFT, and an activating model involving trihydride was verified.
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Affiliation(s)
- Lin Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Ling Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Qian Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Linlin Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Jian Jiang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Hao Sun
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Chong Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Yuanyong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Chun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550004, People's Republic of China
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AlObaid AA, Al-Zaqri N, Al-Muhimeed TI, Aljohani MM, Zarrouk A, Lgaz H, Warad I. Hemilability in neutral RuCl2(η1−P∩O)2(N∩N) complexes: Physicochemical, trans/cis-isomerization, thermal and A DFT/TD-DFT. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Ruthenium-catalyzed hydrogenation of aromatic ketones using chiral diamine and monodentate achiral phosphine ligands. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Thakur N, Patil RA, Talebi M, Readel ER, Armstrong DW. Enantiomeric impurities in chiral catalysts, auxiliaries, and synthons used in enantioselective syntheses. Part 5. Chirality 2019; 31:688-699. [PMID: 31318099 DOI: 10.1002/chir.23086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/10/2019] [Accepted: 05/13/2019] [Indexed: 01/02/2023]
Abstract
The enantiomeric excess of chiral starting materials is one of the important factors determining the enantiopurity of products in asymmetric synthesis. Fifty-one commercially available chiral reagents used as building blocks, catalysts, and auxiliaries in various enantioselective syntheses were assayed for their enantiomeric purity. The test results were classified within five impurities level (ie, <0.01%, 0.01%-0.1%, 0.1%-1%, 1%-10%, >10%). Previously from 1998 to 2013, several reports have been published on the enantiomeric composition of more than 300 chiral reagents. This series of papers is necessitated by the fact that new reagents are forthcoming and that the enantiomeric purity of the same reagent can vary from batch to batch and/or from supplier to supplier. This report presents chiral liquid chromatography (LC) and gas chromatography (GC) methods to separate enantiomers of chiral compounds and evaluate their enantiomeric purities. The accurate and efficient LC analysis was done using newly introduced superficially porous particle (SPP 2.7 μm) based chiral stationary phases (TeicoShell, VancoShell, LarihcShell-P, and NicoShell).
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Affiliation(s)
- Nimisha Thakur
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Rahul A Patil
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Mohsen Talebi
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Elizabeth R Readel
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
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