1
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Beksultanova N, Doğan Ö. Asymmetric synthesis of aryl-substituted pyrrolidines by using CFAM ligand-AgOAc chiral system via 1,3-dipolar cycloaddition reaction. Chirality 2023. [PMID: 36941783 DOI: 10.1002/chir.23557] [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: 09/13/2022] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/23/2023]
Abstract
We have prepared a ligand library based on a ferrocenyl aziridinyl methanol core unit (simply called FAM) having a phenyl group, a cyclohexyl group, and a naphthyl group to be used in 1,3-dipolar cycloaddition (1,3-DC) reactions for the synthesis of chiral pyrrolidines. These chiral ligands were used with AgOAc in 1,3-DC reactions taking place between the aryl-substituted azomethine ylides and N-methylmaleimide as the dipolarophile. In each case, the expected aryl-substituted pyrrolidines were obtained in good to excellent yields with acceptable enantioselectivities favoring only the endo product. The chiral catalyst system CFAM4-AgOAc was also used in 1,3-DC reaction with different dipolarophiles such as dimethyl maleate, tert-butyl acrylate, methyl acrylate, trans-chalcone, and vinyl sulfone. In each case, the cycloadducts were obtained in acceptable yields albeit with low ee. Fortunately, it was possible to increase the ee up to >99% upon crystallization.
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Affiliation(s)
| | - Özdemir Doğan
- Department of Chemistry, Middle East Technical University, Ankara, Turkey
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2
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Chen Y, He J, Zhuang C, Liu Z, Xiao K, Su Z, Ren X, Wang T. Synergistic Catalysis between a Dipeptide Phosphonium Salt and a Metal‐Based Lewis Acid for Asymmetric Synthesis of
N
‐Bridged [3.2.1] Ring Systems. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jiajia He
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Cheng Zhuang
- National Chengdu Center for Safety Evaluation of Drugs and National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu 610041 P. R. China
| | - Zanjiao Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Kai Xiao
- National Chengdu Center for Safety Evaluation of Drugs and National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu 610041 P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Xiaoyu Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
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3
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Chen Y, He J, Zhuang C, Liu Z, Xiao K, Su Z, Ren X, Wang T. Synergistic Catalysis between a Dipeptide Phosphonium Salt and a Metal-Based Lewis Acid for Asymmetric Synthesis of N-Bridged [3.2.1] Ring Systems. Angew Chem Int Ed Engl 2022; 61:e202207334. [PMID: 35766480 DOI: 10.1002/anie.202207334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Indexed: 02/05/2023]
Abstract
We present an unprecedented synergic catalytic route for the asymmetric construction of fluorinated N-bridged [3.2.1] cyclic members of tropane family via a bifunctional phosphonium salt/silver co-catalyzed cyclization process. A broad variety of substrates bearing an assortment of functional groups are compatible with this method, providing targeted compounds bearing seven-membered ring and four contiguous stereocenters in high yields with excellent stereoselectivities. The gram-scale preparations, facile elaborations and preliminary biological activities of the products demonstrate the application potential. Moreover, both experimental and computational mechanistic studies revealed that the cyclization proceeded via a "sandwich" reaction model with multiple weak-bond cooperative activations. Insights gained from our studies are expected to advance general efforts towards the catalytic synthesis of challenging chiral heterocyclic molecules.
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Affiliation(s)
- Yuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jiajia He
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Cheng Zhuang
- National Chengdu Center for Safety Evaluation of Drugs and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Zanjiao Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Kai Xiao
- National Chengdu Center for Safety Evaluation of Drugs and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Xiaoyu Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
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4
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Furuya S, Kanemoto K, Fukuzawa SI. exo'-Selective Construction of Spirobipyrrolidines by the Silver-catalyzed Asymmetric [3+2] Cycloaddition of Imino Esters with 4-Benzylidene-2,3-dioxopyrrolidines. Chem Asian J 2022; 17:e202200239. [PMID: 35486803 DOI: 10.1002/asia.202200239] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/14/2022] [Indexed: 11/07/2022]
Abstract
The unprecedented Ag-catalyzed exo ' -selective [3+2] cycloaddition of imino esters with 4-benzylidene-2,3-dioxopyrrolidines is described. The reaction was efficiently catalyzed by AgOAc/( R , S p )-ThioClickFerrophos (TCF) leading to the construction of the corresponding spirobipyrrolidine scaffolds in excellent enantio- and diastereoselectivities. This reaction is the first example of a silver-catalyzed exo ' -selective asymmetric [3+2] cycloaddition, as well as the first exo ' -selective spirobipyrrolidine construction via a [3+2] cycloaddition process using imino esters. The wide substrate scope of this reaction enabled the preparation of structurally diverse spirobipyrrolidine derivatives, which are attracting attention as targets for drug discovery. Mechanistic studies suggested that the unusual exo ' -selectivity of this reaction is not due to epimerization following the common exo - or endo -selective cycloaddition, but instead is due to a stepwise Michael addition/Mannich sequence with bond rotation.
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Affiliation(s)
- Shohei Furuya
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, 112-8551, Tokyo, Japan
| | - Kazuya Kanemoto
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, 112-8551, Tokyo, Japan
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, 980-8578, Sendai, Japan
| | - Shin-Ichi Fukuzawa
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga Bunkyo-ku, 112-8551, Tokyo, Japan
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5
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Stepakov AV, Filatov AS, Boitsov VM, Lozovskiy SV. Diastereoselective cycloaddition of tosylpropadiene to azomethine ylides, derived from proline and carbonyl compounds: an experimental and DFT study. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.2017436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Alexander V. Stepakov
- Institute of Chemistry, Saint Petersburg State University, Petersburg, Russian Federation
- Saint Petersburg State Institute of Technology, Petersburg, Russian Federation
| | - Alexander S. Filatov
- Institute of Chemistry, Saint Petersburg State University, Petersburg, Russian Federation
| | - Vitali M. Boitsov
- Saint Petersburg National Research Academic University of the Russian Academy of Sciences, Petersburg, Russian Federation
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6
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Jyoti Kalita S, Zhao Z, Li Z, Cheng F, Zhao Y, Huang Y. Diastereodivergent 1,3‐Dipolar Cycloaddition of α‐Fluoro‐α,β‐Unsaturated Arylketones and Azomethine Ylides: Experimental and Theoretical DFT Studies. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Subarna Jyoti Kalita
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Zhen‐Ni Zhao
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Zi‐Han Li
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Feng Cheng
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Yan Zhao
- State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Yi‐Yong Huang
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
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7
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Beksultanova N, Gözükara Z, Araz M, Bulut M, Polat-Çakır S, Aygün M, Dogan Ö. FAM-Ag-catalyzed asymmetric synthesis of heteroaryl-substituted pyrrolidines. Chirality 2021; 33:465-478. [PMID: 34038573 DOI: 10.1002/chir.23320] [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: 02/24/2021] [Revised: 04/20/2021] [Accepted: 04/28/2021] [Indexed: 11/08/2022]
Abstract
New derivatives of FAM (ferrocenyl aziridinyl methanol) ligands NFAM1-4 (naphthyl ferrocenyl aziridinyl methanol) and CFAM1-4 (cyclohexyl ferrocenyl aziridinyl methanol) were synthesized to form a small ligand library and used as chiral catalysts with AgOAc for the asymmetric synthesis of heteroaryl-substituted pyrrolidines by the 1,3-dipolar cycloaddition (1,3-DC) reaction of azomethine ylides. 2-Thienyl, 2-furyl, 2-, 3-, and 4-pyridyl aldimines were prepared and used with N-methylmaleimide, dimethyl maleate, tert-butyl acrylate, methyl acrylate, and acrylonitrile to form the corresponding heteroaryl-substituted pyrrolidines. 1,3-DC reactions yielded the expected cycloadducts in up to 89% yield and up to 76% ee that could be increased up to 95% ee upon crystallization. New chiral ligands NFAM1-4 and CFAM1-4 were fully characterized, and their absolute stereochemistry was determined by single-crystal X-ray analysis.
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Affiliation(s)
| | - Zeynep Gözükara
- Department of Chemistry, Middle East Technical University, Ankara, Turkey
| | - Mihrimah Araz
- Department of Chemistry, Middle East Technical University, Ankara, Turkey
| | - Merve Bulut
- Department of Chemistry, Middle East Technical University, Ankara, Turkey
| | - Sıdıka Polat-Çakır
- Department of Chemical Engineering, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Muhittin Aygün
- Department of Physics, Dokuz Eylül University, Izmir, Turkey
| | - Özdemir Dogan
- Department of Chemistry, Middle East Technical University, Ankara, Turkey
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8
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Ou Z, Huang Q, Kou Y, Cheng F, Kalita SJ, Zhao Z, Huang Y. 1,3‐Dipolar Cycloadditions of β‐Fluoroalkyl Vinylsulfones and Nitrile Oxides for Fluoroalkylated Isoxazolines and Isoxazoles. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Zhi Ou
- Department of Chemistry School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Qian Huang
- Department of Chemistry School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Ying‐Da Kou
- Department of Chemistry School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Feng Cheng
- Department of Chemistry School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Subarna Jyoti Kalita
- Department of Chemistry School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Zhen‐Ni Zhao
- Department of Chemistry School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Yi‐Yong Huang
- Department of Chemistry School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
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