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Xue A, Wei S, Wei X, Huang Y, Qu J, Wang B. Squaramide-catalyzed asymmetric regioselective allylic alkylation of 4-aminopyrazolones with Morita-Baylis-Hillman carbonates. Org Biomol Chem 2023; 21:7173-7179. [PMID: 37609939 DOI: 10.1039/d3ob01098h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An efficient squaramide-catalyzed asymmetric allylic alkylation of 4-aminopyrazolones with various MBH carbonates via different pathways has been described. This method provides access to a series of pyrazolone derivatives bearing a nitrogen-containing quaternary stereocenter in high yields with excellent enantioselectivities and regioselectivities under mild conditions. In addition, we utilized the target products to construct a range of bi-heterocyclic skeletons through [3 + 2] cycloadditions. These novel hybrid heterocycles would be promising candidates for drug-discovery programs and chemical biology.
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Affiliation(s)
- Aiqi Xue
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Shiqiang Wei
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Xingfu Wei
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Yue Huang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
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2
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Wang G, Zhang S, Ding T, Li P, Sun Z. Highly Site‐ and Enantioselective
N‐H
Functionalization of N‐ Monosubstituted Aniline Derivatives Affording Pyrazolones Bearing a Quaternary Stereocenter. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Guan‐Jun Wang
- Shanghai&School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Shu‐Yu Zhang
- Shanghai&School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Tong‐Mei Ding
- Shanghai&School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Peng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau Macao 999078 China
| | - Zhen‐Liang Sun
- Southern Medical University Affiliated Fengxian Hospital Shanghai China 201499
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3
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Li ZF, He HJ, Wang RH, Zhou LY, Xiao YC, Chen FE. Copper-catalyzed asymmetric alkynylation of pyrazole-4,5-diones using chloramphenicol base-derived hydroxyl oxazoline ligands. Org Chem Front 2022. [DOI: 10.1039/d2qo00213b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric copper-catalyzed alkynylation reactions of pyrazole 4,5-diones in the presence of hydroxyl oxazoline ligand, which was derived from low cost, easily accessible chloramphenicol base (ANP), were achieved. The notable...
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Bao X, Wei S, Zou L, He Y, Xue F, Qu J, Wang B. Asymmetric chlorination of 4-substituted pyrazolones catalyzed by natural cinchona alkaloid. Chem Commun (Camb) 2016; 52:11426-11429. [DOI: 10.1039/c6cc06236a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A natural quinidine catalyzed asymmetric chlorination of 4-substituted pyrazolones was revealed in high yield and excellent enantioselectivity.
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Affiliation(s)
- Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Shiqiang Wei
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Liwei Zou
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yuli He
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Fuzhao Xue
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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