1
|
Xu Q, Gou W, Dai P, Zhou X, Tian J, Meng X, Tian Y, Zhang L, Li C. Cinchona-Alkaloid-Derived NNP Ligand for Iridium-Catalyzed Asymmetric Hydrogenation of β-Keto Ester. J Org Chem 2024; 89:1446-1457. [PMID: 38267199 DOI: 10.1021/acs.joc.3c02032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The Ir-catalyzed asymmetric hydrogenation of β-keto esters with Cinchona-alkaloid-derived NNP ligands has been developed. β-Hydroxy esters of opposite configuration were afforded smoothly with 91.5-99.1 and 81.6-99.3% ee, respectively, using NNP L2 and L7 derived from quinidine and quinine separately even on the gram scale. The protocol for the preparation of β-hydroxy esters of opposite configuration by the simple conversion of ligand configurations offered further opportunities for the synthesis of biologically active molecules and drugs.
Collapse
Affiliation(s)
- Qian Xu
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University, Guiyang 550004, People's Republic of China
| | - Wenchang Gou
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University, Guiyang 550004, People's Republic of China
| | - Pinli Dai
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University, Guiyang 550004, People's Republic of China
| | - Xuan Zhou
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University, Guiyang 550004, People's Republic of China
| | - Jie Tian
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University, Guiyang 550004, People's Republic of China
| | - Xin Meng
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University, Guiyang 550004, People's Republic of China
| | - Yu Tian
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University, Guiyang 550004, People's Republic of China
| | - 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
| | - 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
| |
Collapse
|
2
|
Chen Q, Sun H, Li L, Tian J, Xu Q, Ma N, Li L, Zhang L, Li C. The Ir-Catalyzed Asymmetric Hydrogenation of α-Halogenated Ketones Utilizing Cinchona-Alkaloid-Derived NNP Ligand to Produce ( R)- and ( S)-Halohydrins. J Org Chem 2022; 87:15986-15997. [PMID: 36397210 DOI: 10.1021/acs.joc.2c02109] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The asymmetric hydrogenation of α-halogenated ketones with iridium catalyst was developed, utilizing easily accessed cinchona-alkaloid-based NNP ligands. Various α-chloroacetophenones, heterocyclic thienyl and furanyl substrates, and even bromoketones were completely converted to the desired chiral halohydrins by this protocol. Both (R)- and (S)-chiral halohydrins can be prepared by changing the configurations of the chiral ligand NNP with up to 99.6% ee (enantiomeric excess) and 98.8% ee, respectively. Also, a gram-scale experiment was carried out efficiently.
Collapse
Affiliation(s)
- Qian Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 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, Guizhou 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, Guizhou 550004, People's Republic of China
| | - Jie Tian
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Qian Xu
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Nana Ma
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Li Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, People's Republic of China
| | - Lin Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou 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, Guizhou 550004, People's Republic of China
| |
Collapse
|
3
|
Li L, Ma N, Chen Q, Sun H, Tian J, Xu Q, Li C, Zhang L. Iridium-catalyzed asymmetric transfer hydrogenation of aromatic ketones with a cinchona alkaloid derived NNP ligand. Org Biomol Chem 2022; 20:7936-7941. [PMID: 36177951 DOI: 10.1039/d2ob01422j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iridium complex generated in situ from [Ir(COD)Cl]2 and a cinchona alkaloid derived NNP ligand has been developed for the asymmetric transfer hydrogenation of aromatic ketones. In this study, 30 aromatic ketones and heteroaryl ketones were hydrogenated to produce valuable chiral alcohols with up to 99% ee using i-PrOH as the hydrogen source and the solvent. The easily prepared Ir(L8)(COD)Cl also exhibited excellent activity and enantioselectivity in asymmetric transfer hydrogenation of aromatic ketones with a high S/C ratio (up to 2000).
Collapse
Affiliation(s)
- 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.
| | - Nana Ma
- 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.
| | - 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.
| | - Jie Tian
- 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 Xu
- 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.
| | - 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.
| |
Collapse
|