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Qin Y, Zhang Z, Ye X, Tan CH. Ion Pair Catalyst - Pentanidinium. CHEM REC 2023:e202200304. [PMID: 36762723 DOI: 10.1002/tcr.202200304] [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: 12/24/2022] [Revised: 01/27/2023] [Indexed: 02/11/2023]
Abstract
In this account, we further describe our already developed N-sp2 hybrid guanidinium as an efficient phase-transfer catalyst and ion pair catalysis based on N-sp2 hybrid pentanidinium and its application in some new reactions. The sp3 hybrid quaternary ammonium salt has a tetrahedral structure, which means that three sides of it can be effectively steric, allowing the remaining side to be close to the substrate. However, the sp2 hybrid ammonium salt allows the substrate to form ion pairs from both directions respectively, so it is a greater challenge to control the stereoselectivity of the reaction. Van der Waals forces, such as hydrogen bonds and π - π ${\pi -\pi }$ interactions, have been used to make electrophiles approach from a certain direction, leading to a higher enantioselectivity. Based on the above idea, we designed an N-sp2 hybrid phase-transfer catalyst, pentanidinium. Pentanidinium has five conjugated nitrogen atoms, one of which has a formal positive charge, which is necessary for it to become an ion pair catalyst. We have confirmed that pentanidinium can catalyze α-hydroxylation of 3-substituted-2-oxindoles, Michael addition of 3-alkyloxindoles with vinyl sulfone, and alkylation reactions of sulfenate anions and dihydrocoumarins, desymmetrization of pro-chiral sulfinate to afford enantioenriched sulfinate esters. Pentanidinium with side chain structure changes can also be catalyzed efficiently with enantioconvergent halogenophilic nucleophilic substitution, including azidation and thioesterification. In the reaction catalyzed by pentanidinium, it always attracts us with the advantages of low catalytic load and good enantioselectivity.
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Affiliation(s)
- Yimin Qin
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang Province, P.R. China
| | - Zhenqiang Zhang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang Province, P.R. China
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang Province, P.R. China
| | - Choon-Hong Tan
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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2
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Bankar AA, Kathuria D. Guanylguanidines: Catalyst and Ligand for Organic Transformations. ChemistrySelect 2022. [DOI: 10.1002/slct.202201273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Apoorva A. Bankar
- Department of Pharmaceutical Chemistry Government College of Pharmacy, Kathora Naka Amravati Maharashtra 444604 India
| | - Deepika Kathuria
- University Center for Research and Development Chandigarh University Gharuan Punjab 140413 India
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3
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Kathuria D, Raul AD, Wanjari P, Bharatam PV. Biguanides: Species with versatile therapeutic applications. Eur J Med Chem 2021; 219:113378. [PMID: 33857729 DOI: 10.1016/j.ejmech.2021.113378] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 12/18/2022]
Abstract
Biguanides are compounds in which two guanidine moieties are fused to form a highly conjugated system. Biguanides are highly basic and hence they are available as salts mostly hydrochloride salts, these cationic species have been found to exhibit many therapeutic properties. This review covers the research and development carried out on biguanides and accounts the various therapeutic applications of drugs containing biguanide group-such as antimalarial, antidiabetic, antiviral, anticancer, antibacterial, antifungal, anti-tubercular, antifilarial, anti-HIV, as well as other biological activities. The aim of this review is to compile all the medicinal chemistry applications of this class of compounds so as to pave way for the accelerated efforts in finding the drug action mechanisms associated with this class of compounds. Importance has been given to the organic chemistry of these biguanide derivatives also.
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Affiliation(s)
- Deepika Kathuria
- University Center for Research and Development, Chandigarh University, Gharuan, Punjab, 140413, India
| | - Akshay D Raul
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, 160 062, Punjab, India
| | - Pravin Wanjari
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, 160 062, Punjab, India
| | - Prasad V Bharatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, 160 062, Punjab, India.
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Ren J, Ban X, Zhang X, Tan SM, Lee R, Tan C. Kinetic and Dynamic Kinetic Resolution of Racemic Tertiary Bromides by Pentanidium‐Catalyzed Phase‐Transfer Azidation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000138] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jingyun Ren
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 P. R. China
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Xu Ban
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Xin Zhang
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Siu Min Tan
- Science and Mathematics Cluster Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Richmond Lee
- Science and Mathematics Cluster Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Choon‐Hong Tan
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
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5
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Ren J, Ban X, Zhang X, Tan SM, Lee R, Tan C. Kinetic and Dynamic Kinetic Resolution of Racemic Tertiary Bromides by Pentanidium‐Catalyzed Phase‐Transfer Azidation. Angew Chem Int Ed Engl 2020; 59:9055-9058. [DOI: 10.1002/anie.202000138] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Jingyun Ren
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 P. R. China
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Xu Ban
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Xin Zhang
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Siu Min Tan
- Science and Mathematics Cluster Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Richmond Lee
- Science and Mathematics Cluster Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Choon‐Hong Tan
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
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6
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Zhang L, Wang M, Zhou M, Zhang Z, Muraoka M, Zhang W. Chiral Bicyclic Imidazole‐Catalyzed Direct Enantioselective C‐Acylation for the Synthesis of 2‐Oxindoles Bearing a Quaternary Stereocenter. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900294] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lu Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Mo Wang
- School of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Muxing Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zhenfeng Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Masahiro Muraoka
- Department of Applied ChemistryOsaka Institute of Technology Ohmiya 5-16-1, Asahi-ku Osaka 535-8585 Japan
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
- School of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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7
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Moskowitz M, Wolf C. Catalytic Enantioselective Ynamide Additions to Isatins: Concise Access to Oxindole Alkaloids. Angew Chem Int Ed Engl 2019; 58:3402-3406. [PMID: 30695127 PMCID: PMC6444906 DOI: 10.1002/anie.201814074] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/28/2019] [Indexed: 11/05/2022]
Abstract
The highly enantioselective addition of terminal ynamides to a variety of isatins, catalyzed by a bisoxazolidine copper complex under mild, base-free reaction conditions, is described. The reaction is broad in scope, scalable, applicable to unprotected isatins, and provides efficient access to 3-hydroxyoxindoles carrying a tetrasubstituted chiral center with excellent yields and enantioselectivities. Synthetically versatile, multifunctional 3-hydroxyindolinones are obtained by hydration, partial hydrogenation, or hydroxyacyloxylation of the ynamide moiety at room temperature and exhaustive hydrogenation followed by reductive detosylation and spontaneous cyclization affords cinchonamidine alkaloids.
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Affiliation(s)
- Max Moskowitz
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, D.C. 20057 (USA)
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, D.C. 20057 (USA)
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Moskowitz M, Wolf C. Catalytic Enantioselective Ynamide Additions to Isatins: Concise Access to Oxindole Alkaloids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Max Moskowitz
- Department of Chemistry; Georgetown University; 37 and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry; Georgetown University; 37 and O Streets Washington DC 20057 USA
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9
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Craig R, Sorrentino E, Connon SJ. Enantioselective Alkylation of 2‐Oxindoles Catalyzed by a Bifunctional Phase‐Transfer Catalyst: Synthesis of (−)‐Debromoflustramine B. Chemistry 2018. [DOI: 10.1002/chem.201800313] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ryan Craig
- Synthesis and Solid State Pharmaceutical Centre, Trinity Biomedical Sciences Institute, School of ChemistryThe University of Dublin, Trinity College Dublin 2 Ireland
| | - Emiliano Sorrentino
- Synthesis and Solid State Pharmaceutical Centre, Trinity Biomedical Sciences Institute, School of ChemistryThe University of Dublin, Trinity College Dublin 2 Ireland
| | - Stephen J. Connon
- Synthesis and Solid State Pharmaceutical Centre, Trinity Biomedical Sciences Institute, School of ChemistryThe University of Dublin, Trinity College Dublin 2 Ireland
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11
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Zheng J, Lin L, Dai L, Tang Q, Liu X, Feng X. Nickel-Catalyzed Conjugate Addition of Silyl Ketene Imines to In Situ Generated Indol-2-ones: Highly Enantioselective Construction of Vicinal All-Carbon Quaternary Stereocenters. Angew Chem Int Ed Engl 2017; 56:13107-13111. [DOI: 10.1002/anie.201705943] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 07/23/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Jianfeng Zheng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Li Dai
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Qiong Tang
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin China
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12
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Zheng J, Lin L, Dai L, Tang Q, Liu X, Feng X. Nickel-Catalyzed Conjugate Addition of Silyl Ketene Imines to In Situ Generated Indol-2-ones: Highly Enantioselective Construction of Vicinal All-Carbon Quaternary Stereocenters. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705943] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jianfeng Zheng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Li Dai
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Qiong Tang
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin China
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13
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Zeng X, Liu S, Hammond GB, Xu B. Divergent Regio- and Stereoselective Gold-catalyzed Synthesis of α-Fluorosulfones and β-Fluorovinylsulfones from Alkynylsulfones. Chemistry 2017; 23:11977-11981. [PMID: 28736856 DOI: 10.1002/chem.201703179] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Indexed: 11/08/2022]
Abstract
We developed a widely applicable, highly efficient synthesis of α-fluorosulfone and β-fluorovinylsulfone catalyzed by gold. Starting with alkynyl sulfone 1, an [Au]/HF/N-oxide system gives α-fluorosulfone 3 via a gold carbene intermediate, and, if no N-oxide is used, direct addition of HF to 1 gives vinyl sulfone 4 via a vinylfluoro gold intermediate. Both methods have good functional group tolerance and the reactions can be conducted in ambient atmosphere.
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Affiliation(s)
- Xiaojun Zeng
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Shiwen Liu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, KY, 40292, USA
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
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14
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Dalpozzo R. Recent Catalytic Asymmetric Syntheses of 3,3-Disubstituted Indolin-2-ones and 2,2-Disubstituted Indolin-3-ones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700361] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Renato Dalpozzo
- Dipartimento di Chimica e Tecnologie Chimiche; Università della Calabria; 87030 Arcavacata di Rende (Cs Italy
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15
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Balaraman K, Wolf C. Katalytische enantioselektive und diastereoselektive allylische Alkylierung mit Fluorenolaten: Synthese von C3‐fluorierten und quartären Oxindolen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608752] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Kaluvu Balaraman
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
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16
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Balaraman K, Wolf C. Catalytic Enantioselective and Diastereoselective Allylic Alkylation with Fluoroenolates: Efficient Access to C3-Fluorinated and All-Carbon Quaternary Oxindoles. Angew Chem Int Ed Engl 2016; 56:1390-1395. [PMID: 28026079 DOI: 10.1002/anie.201608752] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/28/2016] [Indexed: 11/06/2022]
Abstract
Synthetically versatile 3,3-disubstituted fluorooxindoles exhibiting vicinal chirality centers were obtained in high yields and with excellent enantio-, diastereo-, and regioselectivity through catalytic asymmetric fluoroenolate alkylation with allylic acetates. The reaction proceeds under mild conditions and can be scaled up without compromising the asymmetric induction. The unique synthetic usefulness of the products is highlighted by the incorporation of additional functionalities and the formation of 3-fluorinated oxindoles exhibiting an array of four adjacent centers of chirality. A new C-F bond functionalization path that provides unprecedented possibilities for the stereoselective generation of a chiral quaternary carbon center in the alkaloid scaffold is introduced.
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Affiliation(s)
- Kaluvu Balaraman
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC, 20057, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC, 20057, USA
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17
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Enantioselective Sulfoxidation Catalyzed by a Bisguanidinium Diphosphatobisperoxotungstate Ion Pair. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601574] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Ye X, Moeljadi AMP, Chin KF, Hirao H, Zong L, Tan CH. Enantioselective Sulfoxidation Catalyzed by a Bisguanidinium Diphosphatobisperoxotungstate Ion Pair. Angew Chem Int Ed Engl 2016; 55:7101-5. [PMID: 27150978 DOI: 10.1002/anie.201601574] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 03/24/2016] [Indexed: 11/06/2022]
Abstract
The first enantioselective tungstate-catalyzed oxidation reaction is presented. High enantioselectivities were achieved for a variety of drug-like phenyl and heterocyclic sulfides under mild conditions with H2 O2 , a cheap and environmentally friendly oxidant. Synthetic utility was demonstrated through the preparation of (S)-Lansoprazole, a commercial proton-pump inhibitor. The active ion-pair catalyst was identified to be bisguanidinium diphosphatobisperoxotungstate using Raman spectroscopy and computational studies.
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Affiliation(s)
- Xinyi Ye
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Adhitya Mangala Putra Moeljadi
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Kek Foo Chin
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Lili Zong
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Choon-Hong Tan
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore.
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Vila C, Amr FI, Blay G, Muñoz MC, Pedro JR. Organocatalytic Enantioselective Synthesis of Pyrazoles Bearing a Quaternary Stereocenter. Chem Asian J 2016; 11:1532-6. [DOI: 10.1002/asia.201600325] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Carlos Vila
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - Fares Ibrahim Amr
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - Gonzalo Blay
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - M. Carmen Muñoz
- Departament de Física Aplicada; Universitat Politècnica de València; Camino de Vera s/n 46022 València Spain
| | - José R. Pedro
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
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