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Stroia I, Moisă ME, Pop A, Legrand B, Hanganu A, Hădade ND, Grosu I. Planar Chiral p,p'-Terphenyl-Based Cyclophanes with Remarkable Enantiomer Stability: Synthesis, Theoretical Investigations, and Complexation Studies. J Org Chem 2023; 88:15647-15657. [PMID: 37910657 DOI: 10.1021/acs.joc.3c01631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Design of conformationally stable compounds with planar chirality is a topic of great interest mainly because of their potential applications as enantioselective ligands or other functional materials. Herein, we present the design and synthesis of novel planar chiral cyclophanes, obtained by ortho, ortho″ anchoring of the p,p'-terphenyl unit, with bridges of different lengths and rigidities, along with their nuclear magnetic resonance, mass spectrometry, and X-ray characterizations. We investigated the influence of the structural particularities of the bridges over the stability of the enantiomers, by means of nuclear magnetic resonance and chiral high-performance liquid chromatography as well as by density functional theory calculations. We also demonstrated the ability of one of the cyclophanes to preferentially bind arginine with Ka > 110 M-1 (ΔG > -11 kJ mol-1) in acetonitrile solutions containig 10 % water, in the presence of other amino acids.
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Affiliation(s)
- Ioan Stroia
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Mădălina Elena Moisă
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Alexandra Pop
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron, IBMM, University of Montpellier, ENSCM, CNRS, 15 Avenue Charles Flahault BP 14 491, 34093 Montpellier Cedex 5, France
| | - Anamaria Hanganu
- Research Centre of Applied Organic Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 050663 Bucharest, Romania
- "C. D. Nenitzescu" Institute of Organic and Supramolecular Chemistry of the Romanian Academy, 060023 Bucharest, Romania
| | - Niculina Daniela Hădade
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Ion Grosu
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC), 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
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Pan JB, Yang ZC, Zhang XG, Li ML, Zhou QL. Enantioselective Synthesis of Chiral Amides by a Phosphoric Acid Catalyzed Asymmetric Wolff Rearrangement. Angew Chem Int Ed Engl 2023; 62:e202308122. [PMID: 37559174 DOI: 10.1002/anie.202308122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/09/2023] [Accepted: 08/07/2023] [Indexed: 08/11/2023]
Abstract
The enantioselective addition of potent nucleophiles to ketenes poses challenges due to competing background reactions and poor stereocontrol. Herein, we present a method for enantioselective phosphoric acid catalyzed amination of ketenes generated from α-aryl-α-diazoketones. Upon exposure to visible light, the diazoketones undergo Wolff rearrangement to generate ketenes. The phosphoric acid not only accelerates ketene capture by amines to form a single configuration of aminoenol intermediates but also promotes an enantioselective proton-transfer reaction of the intermediates to yield the products. Mechanistic studies elucidated the reaction pathway and explained how the catalyst expedited the transformation and controlled the enantioselectivity.
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Affiliation(s)
- Jia-Bin Pan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, China
| | - Zhi-Chun Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, China
| | - Xuan-Ge Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, China
| | - Mao-Lin Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, China
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3
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Peluso P, Mamane V. Ferrocene derivatives with planar chirality and their enantioseparation by liquid-phase techniques. Electrophoresis 2023; 44:158-189. [PMID: 35946562 PMCID: PMC10087518 DOI: 10.1002/elps.202200148] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/25/2022] [Accepted: 07/29/2022] [Indexed: 02/01/2023]
Abstract
In the last decade, planar chiral ferrocenes have attracted a growing interest in several fields, particularly in asymmetric catalysis, medicinal chemistry, chiroptical spectroscopy and electrochemistry. In this frame, the access to pure or enriched enantiomers of planar chiral ferrocenes has become essential, relying on the availability of efficient asymmetric synthesis procedures and enantioseparation methods. Despite this, in enantioseparation science, these metallocenes were not comprehensively explored, and very few systematic analytical studies were reported in this field so far. On the other hand, enantioselective high-performance liquid chromatography has been frequently used by organic and organometallic chemists in order to measure the enantiomeric purity of planar chiral ferrocenes prepared by asymmetric synthesis. On these bases, this review aims to provide the reader with a comprehensive overview on the enantioseparation of planar chiral ferrocenes by discussing liquid-phase enantioseparation methods developed over time, integrating this main topic with the most relevant aspects of ferrocene chemistry. Thus, the main structural features of ferrocenes and the methods to model this class of metallocenes will be briefly summarized. In addition, planar chiral ferrocenes of applicative interest as well as the limits of asymmetric synthesis for the preparation of some classes of planar chiral ferrocenes will also be discussed with the aim to orient analytical scientists towards 'hot topics' and issues which are still open for accessing enantiomers of ferrocenes featured by planar chirality.
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Affiliation(s)
- Paola Peluso
- Istituto di Chimica Biomolecolare ICB CNR, Sede secondaria di Sassari, Sassari, Italy
| | - Victor Mamane
- Institut de Chimie de Strasbourg, UMR 7177, CNRS-Université de Strasbourg, Strasbourg, France
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4
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Advanced Application of Planar Chiral Heterocyclic Ferrocenes. INORGANICS 2022. [DOI: 10.3390/inorganics10100152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This manuscript is reviewing the superior catalytic activity and selectivity of ferrocene ligands in a wide range of reactions: reduction of ketones, hydrogenation of olefins, hydroboration, cycloaddition, enantioselective synthesis of biaryls, Tsuji–Trost allylation. Moreover, the correlation between a ligand structure and its catalytic activity is discussed in this review.
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Sakai S, Kanemoto K, Fukuzawa SI. Synthesis and Evaluation of Novel Planar‐Chiral Monophosphine Ligands Bearing Ferrocene‐Triazole Backbones. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100967] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Suguru Sakai
- Chuo University Faculty of Science and Engineering Graduate School of Science and Engineering: Chuo Daigaku Rikogakubu Daigakuin Rikogaku Kenkyuka Department of Applied Chemistry JAPAN
| | - Kazuya Kanemoto
- Chuo University Faculty of Science and Engineering Graduate School of Science and Engineering: Chuo Daigaku Rikogakubu Daigakuin Rikogaku Kenkyuka Department of Applied Chemistry Kasuga1-13-27 112-8551 Bunkyo-ku JAPAN
| | - Shin-ichi Fukuzawa
- Chuo University Faculty of Science and Engineering Graduate School of Science and Engineering: Chuo Daigaku Rikogakubu Daigakuin Rikogaku Kenkyuka Department of Applied Chemistry JAPAN
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Bernardo O, González‐Pelayo S, López LA. Synthesis and Applications of Ferrocene‐Fused Nitrogen Heterocycles. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100911] [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)
- Olaya Bernardo
- Departamento de Química Orgánica e Inorgánica Instituto Universitario de Química Organometálica “Enrique Moles” Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Oviedo Julián Clavería 8 33006- Oviedo Spain
| | - Silvia González‐Pelayo
- Laboratorio de Química Orgánica y Farmacéutica Departamento de Ciencias Farmacéuticas Facultad de Farmacia Universidad de Salamanca Campus Miguel de Unamuno 37007- Salamanca Spain
| | - Luis A. López
- Departamento de Química Orgánica e Inorgánica Instituto Universitario de Química Organometálica “Enrique Moles” Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Oviedo Julián Clavería 8 33006- Oviedo Spain
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Zhang M, Gao S, Tang J, Chen L, Liu A, Sheng S, Zhang AQ. Asymmetric synthesis of chiral organosilicon compounds via transition metal-catalyzed stereoselective C-H activation and silylation. Chem Commun (Camb) 2021; 57:8250-8263. [PMID: 34323898 DOI: 10.1039/d1cc02839a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This feature article details the progress of transition metal-catalyzed stereoselective sp2 and sp3 C-H activation and silylation in the synthesis of chiral organosilicon compounds, and the asymmetric C-H silylation includes intramolecular cyclizing silylation and intermolecular silylation. The silylating reagents include monohydrosilanes, dihydrosilanes, silacylcobutanes and disilanes. In general, catalytic systems include a transition metal salt as the catalyst and a chiral ligand. No external chiral ligand is required in some cases where the chiral substrates act as the source of chirality. Many kinds of silylated compounds with central, axial, planar, or helical chirality have been constructed via C-H activation by asymmetric rhodium, iridium or palladium catalysis. Some pharmacophores and material building blocks were successfully introduced into the target molecules. Some silylated products proved to be useful in medicinal chemistry, synthetic organic chemistry, and materials science. Besides reaction development, mechanisms for stereoselective C-H activation and silylation are also discussed.
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Affiliation(s)
- Ming Zhang
- College of Chemistry and Chemical Engineering and Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University (Yaohu Campus), 99 Ziyangdadao Avenue, Nanchang, Jiangxi 330022, China.
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Correia JTM, Santos MS, Pissinati EF, da Silva GP, Paixão MW. Recent Advances on Photoinduced Cascade Strategies for the Synthesis of N-Heterocycles. CHEM REC 2021; 21:2666-2687. [PMID: 34288377 DOI: 10.1002/tcr.202100160] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 12/13/2022]
Abstract
Over the last decade, visible-light photocatalysis has proved to be a powerful tool for the construction of N-heterocyclic frameworks, important constituents of natural products, insecticides, pharmacologically relevant therapeutic agents and catalysts. This account highlights recent developments and established methods towards the photocatalytic cascades for preparation of different classes of N-heterocycles, giving emphasis on our contribution to the field.
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Affiliation(s)
- José Tiago M Correia
- Department of Chemistry, Federal University of São Carlos, Rodovia Washington Luís, km 235 - SP-310 - São Carlos, São Paulo, Brazil -, 13565-905
| | - Marilia S Santos
- Department of Chemistry, Federal University of São Carlos, Rodovia Washington Luís, km 235 - SP-310 - São Carlos, São Paulo, Brazil -, 13565-905
| | - Emanuele F Pissinati
- Department of Chemistry, Federal University of São Carlos, Rodovia Washington Luís, km 235 - SP-310 - São Carlos, São Paulo, Brazil -, 13565-905
| | - Gustavo P da Silva
- Department of Chemistry, Federal University of São Carlos, Rodovia Washington Luís, km 235 - SP-310 - São Carlos, São Paulo, Brazil -, 13565-905
| | - Márcio W Paixão
- Department of Chemistry, Federal University of São Carlos, Rodovia Washington Luís, km 235 - SP-310 - São Carlos, São Paulo, Brazil -, 13565-905
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Chen H, Wang Y, Luan Y, Ye M. Enantioselective Twofold C−H Annulation of Formamides and Alkynes without Built‐in Chelating Groups. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001267] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hao Chen
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Yin‐Xia Wang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Yu‐Xin Luan
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Mengchun Ye
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
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10
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Ueda JI, Enomoto Y, Seki M, Konishi T, Ogasawara M, Yoshida K. Oxidative Cyclization of o-(1-Hydroxy-2-alkynyl)- N-tosylanilides for the Synthesis of 4-Quinolones. J Org Chem 2020; 85:6420-6428. [PMID: 32315174 DOI: 10.1021/acs.joc.0c00245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The treatment of easily accessible o-(1-hydroxy-2-alkynyl)-N-tosylanilides 1 with excess manganese(IV) oxide in the presence of substoichiometric tetrabutylammonium iodide (TBAI) in chloroform (or in the absence of TBAI in dimethylformamide, DMF) promoted a sequential oxidation/intramolecular hydroamination to give 4-quinolones 3 and/or (Z)-2-alkylidene-3-oxindoles (Z)-4 in good yields. Possibly, MnO2 played dual roles as an oxidant and as a Lewis acidic activator of intermediary ynones 2. The product distributions between 3 and (Z)-4 could be controlled by the choice of solvents.
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Affiliation(s)
- Jun-Ichi Ueda
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Yuuki Enomoto
- Department of Natural Science, Graduate School of Science and Technology and Research Cluster on "Innovative Chemical Sensing", Tokushima University, Tokushima 770-8506, Japan
| | - Mizuki Seki
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Takuma Konishi
- Department of Natural Science, Graduate School of Science and Technology and Research Cluster on "Innovative Chemical Sensing", Tokushima University, Tokushima 770-8506, Japan
| | - Masamichi Ogasawara
- Department of Natural Science, Graduate School of Science and Technology and Research Cluster on "Innovative Chemical Sensing", Tokushima University, Tokushima 770-8506, Japan
| | - Kazuhiro Yoshida
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Chen H, Wang YX, Luan YX, Ye M. Enantioselective Twofold C-H Annulation of Formamides and Alkynes without Built-in Chelating Groups. Angew Chem Int Ed Engl 2020; 59:9428-9432. [PMID: 32154983 DOI: 10.1002/anie.202001267] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/05/2020] [Indexed: 12/20/2022]
Abstract
Twofold C-H annulation of readily available formamides and alkynes without built-in chelating groups was achieved. Ni-Al bimetallic catalysis enabled by a bulky BINOL-derived chiral secondary phosphine oxide (SPO) ligand proved to be critical for high reactivity and high selectivity. This reaction uses readily available formamides as starting materials and provides a concise synthetic pathway to a broad range of chiral ferrocenes in 40-98 % yield and 93-99 % ee.
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Affiliation(s)
- Hao Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yin-Xia Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yu-Xin Luan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Mengchun Ye
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
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Cunningham L, Benson A, Guiry PJ. Recent developments in the synthesis and applications of chiral ferrocene ligands and organocatalysts in asymmetric catalysis. Org Biomol Chem 2020; 18:9329-9370. [DOI: 10.1039/d0ob01933j] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This review highlights recent advances in the synthesis and application of ferrocene-containing chiral ligands and organocatalysts in asymmetric catalysis.
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Affiliation(s)
- Laura Cunningham
- Synthesis and Solid State Pharmaceutical Centre
- Centre for Synthesis and Chemical Biology
- School of Chemistry
- University College Dublin
- Dublin 4
| | - Annette Benson
- Centre for Synthesis and Chemical Biology
- School of Chemistry
- University College Dublin
- Dublin 4
- Ireland
| | - Patrick J. Guiry
- Synthesis and Solid State Pharmaceutical Centre
- Centre for Synthesis and Chemical Biology
- School of Chemistry
- University College Dublin
- Dublin 4
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