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Zhu B, Fan H, Ding Y, Zhai Y, Wang L, Wang M, Zhu G, Chang J. Copper( i)-catalyzed asymmetric [3 + 2] cycloaddition of N-ester acylhydrazones and β-trifluoromethyl-α,β-unsaturated ketones. Org Chem Front 2022. [DOI: 10.1039/d2qo00993e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first copper(i)-catalyzed asymmetric [3 + 2] cycloaddition of N-ester acylhydrazones and ketones has been developed, affording an array of chiral pyrazolidines containing a trifluoromethyl moiety bearing three vicinal stereocenters.
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Affiliation(s)
- Bo Zhu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Huihui Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Yanan Ding
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Yubing Zhai
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Le Wang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Mengqi Wang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Gongming Zhu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Junbiao Chang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
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Liu L, Ji M, Hua W, Liu H. Synthesis of 3c,4r,5t-1,2-dimethyl-3,5-diaryl pyrazolidine-4-carboxylic acid via intermolecular [3 ++2] cycloaddition. JOURNAL OF CHEMICAL RESEARCH 2000. [DOI: 10.3184/030823400103167138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
1,2-Dimethyl-3,5-diarylpyrazolidine-4-carboxylic acid derivatives 4a–d were synthesised stereo-selectively via intermolecular [3++2] cycloaddition of aldehydes 1a–d and 1,2-dimethylhydrazine dihydrochloride (2) with ethyl trans-cinnamate (3), stereochemistries of which were assigned by 1H-NOESY spectroscopy, and relative configurations confirmed by X-ray diffraction of one of them (4a).
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Affiliation(s)
- Ligang Liu
- Center of Medicinal Research, China Pharmaceutical University, Nanjing 210009, P.R. China
| | - Min Ji
- Center of Medicinal Research, China Pharmaceutical University, Nanjing 210009, P.R. China
| | - Weiyi Hua
- Center of Medicinal Research, China Pharmaceutical University, Nanjing 210009, P.R. China
| | - Hong Liu
- Shanghai Institute of Materia Medica, Academia Sinica, Shanghai 200031, P.R. China
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Synthesis of adamantyl-substituted pyrazolines. Chem Heterocycl Compd (N Y) 1994. [DOI: 10.1007/bf01165025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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