1
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Latha AT, Swamy PCA. Unveiling the Reactivity of Part Per Million Levels of Cobalt-Salen Complexes in Hydrosilylation of Ketones. Chemistry 2024; 30:e202401841. [PMID: 38853149 DOI: 10.1002/chem.202401841] [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: 05/10/2024] [Revised: 06/06/2024] [Accepted: 06/09/2024] [Indexed: 06/11/2024]
Abstract
A series of air-stable cobalt(III)salen complexes Co-1 to Co-4 have been synthesized and employed in the hydrosilylation of ketones. Notably, the most intricately tailored Co-3 pre-catalyst exhibited exceptional catalytic activity under mild reaction conditions. The developed catalytic hydrosilylation protocol proceeded with an unusual ppm level (5 ppm) catalyst loading of Co-3 and achieved a maximum turnover number (TON) of 200,000. A wide variety of aromatic, aliphatic, and heterocyclic ketones encompassing both electron-donating and electron-withdrawing substituents were successfully transformed into the desired silyl ethers or secondary alcohols in moderate to excellent yields.
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Affiliation(s)
- Anjima T Latha
- Main Group Organometallics Optoelectronic Materials and Catalysis Laboratory, Department of Chemistry, National Institute of Technology, Calicut, 673601, India
| | - P Chinna Ayya Swamy
- Main Group Organometallics Optoelectronic Materials and Catalysis Laboratory, Department of Chemistry, National Institute of Technology, Calicut, 673601, India
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2
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Latha AT, P CAS. Air-Stable Iron(III) Salen Complexes for Selective Hydroboration of Ketones and Unactivated Imines without Base Activation. J Org Chem 2024; 89:8376-8384. [PMID: 38847608 DOI: 10.1021/acs.joc.4c00145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Herein, we designed and synthesized a series of air-stable, cost-effective, and readily synthesizable iron(III) salen complexes (Fe-1 and Fe-2) for facilitating the selective hydroboration of ketones and unactivated imines with pinacolborane in the absence of any additive. These catalyst systems exhibited good yields, chemoselectivity, high atom economy, and a broad substrate scope under mild reaction conditions with a minimal catalyst loading of 0.2 mol %. The catalytic efficiency of Fe-1 has been demonstrated through the hydroboration of diverse aromatic, aliphatic, and heterocyclic ketones and imines with a turnover number of up to 1000, highlighting its broad substrate scope. Ketones are chemoselectively hydroborated over other functional groups such as imines, alkenes, esters, nitriles, acids, and alcohols. Besides, the synthetic utility of this strategy has also been showcased by the construction of a natural chiral monoterpenoid carveol. This protocol can be readily scaled up for gram-scale synthesis of alcohols, which underscores the potential industrial applicability of our catalyst system in the synthesis of secondary alcohols on a larger scale.
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Affiliation(s)
- Anjima T Latha
- Main Group Organometallics Optoelectronic Materials and Catalysis Lab, Department of Chemistry, National Institute of Technology, Calicut 673601, India
| | - Chinna Ayya Swamy P
- Main Group Organometallics Optoelectronic Materials and Catalysis Lab, Department of Chemistry, National Institute of Technology, Calicut 673601, India
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3
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Biala G, Kedzierska E, Kruk-Slomka M, Orzelska-Gorka J, Hmaidan S, Skrok A, Kaminski J, Havrankova E, Nadaska D, Malik I. Research in the Field of Drug Design and Development. Pharmaceuticals (Basel) 2023; 16:1283. [PMID: 37765091 PMCID: PMC10536713 DOI: 10.3390/ph16091283] [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: 08/04/2023] [Revised: 08/28/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
The processes used by academic and industrial scientists to discover new drugs have recently experienced a true renaissance, with many new and exciting techniques being developed over the past 5-10 years alone. Drug design and discovery, and the search for new safe and well-tolerated compounds, as well as the ineffectiveness of existing therapies, and society's insufficient knowledge concerning the prophylactics and pharmacotherapy of the most common diseases today, comprise a serious challenge. This can influence not only the quality of human life, but also the health of whole societies, which became evident during the COVID-19 pandemic. In general, the process of drug development consists of three main stages: drug discovery, preclinical development using cell-based and animal models/tests, clinical trials on humans and, finally, forward moving toward the step of obtaining regulatory approval, in order to market the potential drug. In this review, we will attempt to outline the first three most important consecutive phases in drug design and development, based on the experience of three cooperating and complementary academic centers of the Visegrád group; i.e., Medical University of Lublin, Poland, Masaryk University of Brno, Czech Republic, and Comenius University Bratislava, Slovak Republic.
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Affiliation(s)
- Grazyna Biala
- Chair and Department of Pharmacology with Pharmacodynamics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland; (E.K.); (M.K.-S.); (J.O.-G.)
| | - Ewa Kedzierska
- Chair and Department of Pharmacology with Pharmacodynamics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland; (E.K.); (M.K.-S.); (J.O.-G.)
| | - Marta Kruk-Slomka
- Chair and Department of Pharmacology with Pharmacodynamics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland; (E.K.); (M.K.-S.); (J.O.-G.)
| | - Jolanta Orzelska-Gorka
- Chair and Department of Pharmacology with Pharmacodynamics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland; (E.K.); (M.K.-S.); (J.O.-G.)
| | - Sara Hmaidan
- Chair and Department of Pharmacology with Pharmacodynamics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland; (E.K.); (M.K.-S.); (J.O.-G.)
| | - Aleksandra Skrok
- Chair and Department of Pharmacology with Pharmacodynamics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland; (E.K.); (M.K.-S.); (J.O.-G.)
| | - Jakub Kaminski
- Chair and Department of Pharmacology with Pharmacodynamics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland; (E.K.); (M.K.-S.); (J.O.-G.)
| | - Eva Havrankova
- Department of Chemical Drugs, Faculty of Pharmacy, Masaryk University of Brno, 601 77 Brno, Czech Republic;
| | - Dominika Nadaska
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University Bratislava, 832 32 Bratislava, Slovakia (I.M.)
| | - Ivan Malik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University Bratislava, 832 32 Bratislava, Slovakia (I.M.)
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4
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Yang W, Yan J, Xu P, Chen J, Fang Q, Lin D, Yan Y, Zhang Q. Role of Ionic Concentration and Distribution in Anionic Conductivity: Case Study on a Series of Cobaltocenium-Containing Anion Exchange Membranes with Precise Structure Control. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weihong Yang
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Jing Yan
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Peng Xu
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Jin Chen
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Qianyi Fang
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Daolei Lin
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yi Yan
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Qiuyu Zhang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
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5
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Zaera F. Designing Sites in Heterogeneous Catalysis: Are We Reaching Selectivities Competitive With Those of Homogeneous Catalysts? Chem Rev 2022; 122:8594-8757. [PMID: 35240777 DOI: 10.1021/acs.chemrev.1c00905] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A critical review of different prominent nanotechnologies adapted to catalysis is provided, with focus on how they contribute to the improvement of selectivity in heterogeneous catalysis. Ways to modify catalytic sites range from the use of the reversible or irreversible adsorption of molecular modifiers to the immobilization or tethering of homogeneous catalysts and the development of well-defined catalytic sites on solid surfaces. The latter covers methods for the dispersion of single-atom sites within solid supports as well as the use of complex nanostructures, and it includes the post-modification of materials via processes such as silylation and atomic layer deposition. All these methodologies exhibit both advantages and limitations, but all offer new avenues for the design of catalysts for specific applications. Because of the high cost of most nanotechnologies and the fact that the resulting materials may exhibit limited thermal or chemical stability, they may be best aimed at improving the selective synthesis of high value-added chemicals, to be incorporated in organic synthesis schemes, but other applications are being explored as well to address problems in energy production, for instance, and to design greener chemical processes. The details of each of these approaches are discussed, and representative examples are provided. We conclude with some general remarks on the future of this field.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, California 92521, United States
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6
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Benda L, Doistau B, Rossi-Gendron C, Chamoreau LM, Hasenknopf B, Vives G. Substrate-dependent allosteric regulation by switchable catalytic molecular tweezers. Commun Chem 2019. [DOI: 10.1038/s42004-019-0246-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AbstractAllosteric regulation is exploited by biological systems to regulate the activity and/or selectivity of enzymatic reactions but remains a challenge for artificial catalysts. Here we report switchable terpy(Zn-salphen)2 molecular tweezers and their metal-dependent allosteric regulation of the acetylation of pyridinemethanol isomers. Zinc-salphen moieties can both act as a Lewis acid to activate the anhydride reagents and provide a binding site for pyridinemethanol substrates. The tweezers’ conformation can be reversibly switched between an open and a closed form by a metal ion stimulus. Both states offer distinct catalytic profiles, with closed tweezers showing superior catalytic activity towards ortho substrates, while open tweezers presenting higher rate for the acetylation of meta and para substrates. This notable substrate dependent allosteric response is rationalized by a combination of experimental results and calculations supporting a bimetallic reaction in the closed form for ortho substrate and an inhibition of the cavity for meta and para substrates.
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7
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Freire C, Nunes M, Pereira C, Fernandes DM, Peixoto AF, Rocha M. Metallo(salen) complexes as versatile building blocks for the fabrication of molecular materials and devices with tuned properties. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.05.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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8
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An immobilized vanadium-binaphthylbishydroxamic acid complex as a reusable catalyst for the asymmetric epoxidation of allylic alcohols. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Multi-walled carbon nanotubes decorated with Cu(II) triazole Schiff base complex for adsorptive removal of synthetic dyes. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.137] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Recent advances in the catalytic oxidation of alkene and alkane substrates using immobilized manganese complexes with nitrogen containing ligands. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.12.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Solomon MB, Chan B, Kubiak CP, Jolliffe KA, D'Alessandro DM. The spectroelectrochemical behaviour of redox-active manganese salen complexes. Dalton Trans 2019; 48:3704-3713. [DOI: 10.1039/c8dt02676a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of discrete, functionalised Mn(iii) pyridyl salen metal complexes with varying aliphatic and aromatic bridging diamines have been evaluated and their spectroelectrochemical properties probed.
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Affiliation(s)
| | - Bun Chan
- Graduate School of Engineering
- Nagasaki University
- Nagasaki-shi
- Japan
| | - Clifford P. Kubiak
- Department of Chemistry and Biochemistry
- University of California
- San Diego
- USA
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12
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Abdellah I, Martini C, Dos Santos A, Dragoe D, Guérineau V, Huc V, Schulz E. Calix[8]arene as New Platform for Cobalt-Salen Complexes Immobilization and Use in Hydrolytic Kinetic Resolution of Epoxides. ChemCatChem 2018. [DOI: 10.1002/cctc.201801164] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ibrahim Abdellah
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Cyril Martini
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
- Novecal; 8 rue Bastien Lepage 91140 Villebon sur Yvette France
| | - Amandine Dos Santos
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Diana Dragoe
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Vincent Guérineau
- Institut de Chimie des Substances Naturelles Centre de Recherche de Gif, CNRS; Université Paris-Saclay; 1, avenue de la Terrasse Gif-Sur-Yvette 91198 France
| | - Vincent Huc
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Emmanuelle Schulz
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
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13
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Manganes-Porphyrin as Efficient Enantioselective Catalyst for Aerobic Epoxidation of Olefins. Catal Letters 2018. [DOI: 10.1007/s10562-018-2447-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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14
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Shao L, Chen Q, Qi C. Air Oxidation of Benzoin Catalyzed by Metal-Salen Complexes. KINETICS AND CATALYSIS 2018. [DOI: 10.1134/s002315841801010x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Altava B, Burguete MI, García-Verdugo E, Luis SV. Chiral catalysts immobilized on achiral polymers: effect of the polymer support on the performance of the catalyst. Chem Soc Rev 2018; 47:2722-2771. [DOI: 10.1039/c7cs00734e] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Achiral polymeric supports can have important positive effects on the activity, stability and selectivity of supported chiral catalysts.
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Affiliation(s)
- Belén Altava
- Department of Inorganic and Organic Chemistry
- University Jaume I
- Castellón
- Spain
| | - M. Isabel Burguete
- Department of Inorganic and Organic Chemistry
- University Jaume I
- Castellón
- Spain
| | | | - Santiago V. Luis
- Department of Inorganic and Organic Chemistry
- University Jaume I
- Castellón
- Spain
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16
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Thakur A, Baba R, Chammingkwan P, Terano M, Taniike T. Synthesis of aryloxide-containing half-titanocene catalysts grafted to soluble polynorbornene chains and their application in ethylene polymerization: Integration of multiple active centres in a random coil. J Catal 2018. [DOI: 10.1016/j.jcat.2017.10.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Tak R, Kumar M, Menapara T, Gupta N, Kureshy RI, Khan NUH, Suresh E. Asymmetric Hydrolytic and Aminolytic Kinetic Resolution of Racemic Epoxides using Recyclable Macrocyclic Chiral Cobalt(III) Salen Complexes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700788] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rajkumar Tak
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg Bhavnagar 364002, Gujarat India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR); G. B. Marg Bhavnagar 364002, Gujarat India
| | - Manish Kumar
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg Bhavnagar 364002, Gujarat India
| | - Tusharkumar Menapara
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg Bhavnagar 364002, Gujarat India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR); G. B. Marg Bhavnagar 364002, Gujarat India
| | - Naveen Gupta
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg Bhavnagar 364002, Gujarat India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR); G. B. Marg Bhavnagar 364002, Gujarat India
| | - Rukhsana I. Kureshy
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg Bhavnagar 364002, Gujarat India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR); G. B. Marg Bhavnagar 364002, Gujarat India
| | - Noor-ul H. Khan
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg Bhavnagar 364002, Gujarat India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR); G. B. Marg Bhavnagar 364002, Gujarat India
| | - E. Suresh
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR); G. B. Marg Bhavnagar 364002, Gujarat India
- Analytical Division and Centralized Instrument Facility; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg Bhavnagar 364002, Gujarat India
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18
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Fredlund A, Kothapalli VA, Hobbs CE. Phase-selectively soluble polynorbornene as a catalyst support. Polym Chem 2017. [DOI: 10.1039/c6py02041k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A phase-selective polynorbornene catalyst-support has been developed that can be recycled using liquid/liquid separations, generating less waste than typical precipitations.
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Affiliation(s)
- A. Fredlund
- Department of Chemistry
- Texas A&M University-Kingsville
- Kingsville
- USA
| | - V. A. Kothapalli
- Department of Chemistry
- Texas A&M University-Kingsville
- Kingsville
- USA
| | - C. E. Hobbs
- Department of Chemistry
- Texas A&M University-Kingsville
- Kingsville
- USA
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19
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Lindbäck E, Norouzi-Arasi H, Sheibani E, Ma D, Dawaigher S, Wärnmark K. Synthesis of Cr(III) Salen Complexes as Supramolecular Catalytic Systems for Ring-Opening Reactions of Epoxides. ChemistrySelect 2016. [DOI: 10.1002/slct.201600457] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Emil Lindbäck
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; P. O. Box 124 SE-221 00 Lund Sweden
| | - Hassan Norouzi-Arasi
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; P. O. Box 124 SE-221 00 Lund Sweden
| | - Esmaeil Sheibani
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; P. O. Box 124 SE-221 00 Lund Sweden
- Department of Chemistry; University of Isfahan; Isfahan 81746-73441 Iran
| | - Dayou Ma
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; P. O. Box 124 SE-221 00 Lund Sweden
- School of Pharmaceutical Sciences; Central South University; Changsha China 86731-83521996
| | - Sami Dawaigher
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; P. O. Box 124 SE-221 00 Lund Sweden
| | - Kenneth Wärnmark
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; P. O. Box 124 SE-221 00 Lund Sweden
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20
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Oktay B, Demir S, Kayaman-Apohan N. Immobilization of α-amylase onto poly(glycidyl methacrylate) grafted electrospun fibers by ATRP. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 50:386-93. [DOI: 10.1016/j.msec.2015.02.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 01/05/2015] [Accepted: 02/23/2015] [Indexed: 10/24/2022]
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21
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Martín C, Whiteoak CJ, Martin E, Escudero-Adán EC, Galán-Mascarós JR, Kleij AW. Synthesis and Structural Features of Co(II) and Co(III) Complexes Supported by Aminotrisphenolate Ligand Scaffolds. Inorg Chem 2014; 53:11675-81. [DOI: 10.1021/ic501883z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Carmen Martín
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països
Catalans 16, 43007 Tarragona, Spain
| | - Christopher J. Whiteoak
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països
Catalans 16, 43007 Tarragona, Spain
| | - Eddy Martin
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països
Catalans 16, 43007 Tarragona, Spain
| | - Eduardo C. Escudero-Adán
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països
Catalans 16, 43007 Tarragona, Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països
Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països
Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
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22
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White DE, Tadross PM, Lu Z, Jacobsen EN. A broadly applicable and practical oligomeric (salen) Co catalyst for enantioselective epoxide ring-opening reactions. Tetrahedron 2014; 70:4165-4180. [PMID: 25045188 PMCID: PMC4096935 DOI: 10.1016/j.tet.2014.03.043] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The (salen) Co catalyst (4a) can be prepared as a mixture of cyclic oligomers in a short, chromatography-free synthesis from inexpensive, commercially available precursors. This catalyst displays remarkable enhancements in reactivity and enantioselectivity relative to monomeric and other multimeric (salen) Co catalysts in a wide variety of enantioselective epoxide ring-opening reactions. The application of catalyst 4a is illustrated in the kinetic resolution of terminal epoxides by nucleophilic ring-opening with water, phenols, and primary alcohols; the desymmetrization of meso epoxides by addition of water and carbamates; and the desymmetrization of oxetanes by intramolecular ring opening with alcohols and phenols. The favorable solubility properties of complex 4a under the catalytic conditions facilitated mechanistic studies, allowing elucidation of the basis for the beneficial effect of oligomerization. Finally, a catalyst selection guide is provided to delineate the specific advantages of oligomeric catalyst 4a relative to (salen) Co monomer 1 for each reaction class.
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Affiliation(s)
- David E White
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Pamela M Tadross
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Zhe Lu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Eric N Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
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23
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Affiliation(s)
- Hélène Pellissier
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313 13397, Marseille, France
| | - Hervé Clavier
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313 13397, Marseille, France
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24
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Roy T, Barik S, Kumar M, Kureshy RI, Ganguly B, Khan NUH, Abdi SHR, Bajaj HC. Asymmetric hydrolytic kinetic resolution with recyclable polymeric Co(iii)–salen complexes: a practical strategy in the preparation of (S)-metoprolol, (S)-toliprolol and (S)-alprenolol: computational rationale for enantioselectivity. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00594e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Role of chiral/achiral linker in asymmetric HKR of terminal epoxides using recyclable polymeric Co(iii) salen complexes.
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Affiliation(s)
- Tamal Roy
- Discipline of Inorganic Materials and Catalysis
- CSIR
- Central Salt and Marine Chemicals Research Institute (CSMCRI)
- Bhavnagar 364 021, India
| | - Sunirmal Barik
- Academy of Scientific and Innovative Research
- CSIR-CSMCRI
- Bhavnagar, India
- Analytical Discipline and Centralised Instrumental Facility
- CSIR
| | - Manish Kumar
- Discipline of Inorganic Materials and Catalysis
- CSIR
- Central Salt and Marine Chemicals Research Institute (CSMCRI)
- Bhavnagar 364 021, India
- Academy of Scientific and Innovative Research
| | - Rukhsana I. Kureshy
- Discipline of Inorganic Materials and Catalysis
- CSIR
- Central Salt and Marine Chemicals Research Institute (CSMCRI)
- Bhavnagar 364 021, India
- Academy of Scientific and Innovative Research
| | - Bishwajit Ganguly
- Academy of Scientific and Innovative Research
- CSIR-CSMCRI
- Bhavnagar, India
- Analytical Discipline and Centralised Instrumental Facility
- CSIR
| | - Noor-ul H. Khan
- Discipline of Inorganic Materials and Catalysis
- CSIR
- Central Salt and Marine Chemicals Research Institute (CSMCRI)
- Bhavnagar 364 021, India
- Academy of Scientific and Innovative Research
| | - Sayed H. R. Abdi
- Discipline of Inorganic Materials and Catalysis
- CSIR
- Central Salt and Marine Chemicals Research Institute (CSMCRI)
- Bhavnagar 364 021, India
- Academy of Scientific and Innovative Research
| | - Hari C. Bajaj
- Discipline of Inorganic Materials and Catalysis
- CSIR
- Central Salt and Marine Chemicals Research Institute (CSMCRI)
- Bhavnagar 364 021, India
- Academy of Scientific and Innovative Research
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25
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Zhang Y, Gao K, Zhao Z, Yue D, Hu Y, Masuda T. Helical poly(phenylacetylene)s containing schiff-base and amino groups: Synthesis, secondary structures, and responsiveness to benzoic acid. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26955] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yu Zhang
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering; School of Chemical Engineering, Dalian University of Technology; Dalian 116024 China
| | - Keke Gao
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering; School of Chemical Engineering, Dalian University of Technology; Dalian 116024 China
| | - Zhongfu Zhao
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering; School of Chemical Engineering, Dalian University of Technology; Dalian 116024 China
| | - Dongmei Yue
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yanming Hu
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering; School of Chemical Engineering, Dalian University of Technology; Dalian 116024 China
| | - Toshio Masuda
- Fukui University of Technology; 3-6-1 Gakuen Fukui 910-8505 Japan
- Research Center for Environmentally Friendly Materials Engineering; Muroran Institute of Technology; 27-1 Mizumoto-cho Muroran 050-8585 Japan
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26
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Kirk ML, Shultz DA, Stasiw DE, Habel-Rodriguez D, Stein B, Boyle PD. Electronic and Exchange Coupling in a Cross-Conjugated D–B–A Biradical: Mechanistic Implications for Quantum Interference Effects. J Am Chem Soc 2013; 135:14713-25. [DOI: 10.1021/ja405354x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Martin L. Kirk
- Department of
Chemistry, The University of New Mexico, MSC03 2060, Albuquerque, New Mexico 87131-0001, United States
| | - David A. Shultz
- Department of
Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Daniel E. Stasiw
- Department of
Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Diana Habel-Rodriguez
- Department of
Chemistry, The University of New Mexico, MSC03 2060, Albuquerque, New Mexico 87131-0001, United States
| | - Benjamin Stein
- Department of
Chemistry, The University of New Mexico, MSC03 2060, Albuquerque, New Mexico 87131-0001, United States
| | - Paul D. Boyle
- Department of
Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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27
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Ren WM, Wang YM, Zhang R, Jiang JY, Lu XB. Mechanistic Aspects of Metal Valence Change in SalenCo(III)OAc-Catalyzed Hydrolytic Kinetic Resolution of Racemic Epoxides. J Org Chem 2013; 78:4801-10. [DOI: 10.1021/jo400325f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Wei-Min Ren
- State Key Laboratory of
Fine Chemicals, College of
Chemistry, Dalian University of Technology, 2 linggong road, Dalian 116024, China
| | - Yi-Ming Wang
- State Key Laboratory of
Fine Chemicals, College of
Chemistry, Dalian University of Technology, 2 linggong road, Dalian 116024, China
| | - Rong Zhang
- State Key Laboratory of
Fine Chemicals, College of
Chemistry, Dalian University of Technology, 2 linggong road, Dalian 116024, China
| | - Jing-Yang Jiang
- State Key Laboratory of
Fine Chemicals, College of
Chemistry, Dalian University of Technology, 2 linggong road, Dalian 116024, China
| | - Xiao-Bing Lu
- State Key Laboratory of
Fine Chemicals, College of
Chemistry, Dalian University of Technology, 2 linggong road, Dalian 116024, China
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28
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Nizovtsev AV, Scheurer A, Kosog B, Heinemann FW, Meyer K. Synthesis of Differently Substituted tacn-Based Ligands: Towards the Control of Solubility and Electronic and Steric Properties of Uranium Coordination Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201549] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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6,6'-(1E,1'E)-((1R,2R)-1,2-Diphenylethane-1,2-diyl)bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(2-tert-butyl-4-((trimethylsilyl)ethynyl)phenol). MOLBANK 2013. [DOI: 10.3390/m795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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30
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Tedim J, Biernacki K, Fonseca J, Patrício S, Carneiro A, Magalhães AL, Gurman SJ, Freire C, Hillman AR. Pseudo-crown functionalized copper salen complexes forming electroactive polymers: Rationalization of Ba2+ interaction using XAS and DFT. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2012.09.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Hong X, Billon L, Mellah M, Schulz E. Chemical-promoted oxidative polymerization of modified-cobalt salen complexes, efficient catalysts for the dynamic HKR. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20644g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Suriboot J, Hobbs CE, Yang YC, Bergbreiter DE. Protective encapsulation of acid-sensitive catalysts using polyethylene ligands. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26319] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Hong X, Mellah M, Bordier F, Guillot R, Schulz E. Electrogenerated Polymers as Efficient and Robust Heterogeneous Catalysts for the Hydrolytic Kinetic Resolution of Terminal Epoxides. ChemCatChem 2012. [DOI: 10.1002/cctc.201200085] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Sadhukhan A, Khan NUH, Roy T, Kureshy RI, Abdi SHR, Bajaj HC. Asymmetric hydrolytic kinetic resolution with recyclable macrocyclic Co(III)-salen complexes: a practical strategy in the preparation of (R)-mexiletine and (S)-propranolol. Chemistry 2012; 18:5256-60. [PMID: 22422658 DOI: 10.1002/chem.201103574] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Indexed: 11/09/2022]
Abstract
A chiral cobalt(III) complex (1e) was synthesized by the interaction of cobalt(II) acetate and ferrocenium hexafluorophosphate with a chiral dinuclear macrocyclic salen ligand that was derived from 1R,2R-(-)-1,2-diaminocyclohexane with trigol bis-aldehyde. A variety of epoxides and glycidyl ethers were suitable substrates for the reaction with water in the presence of chiral macrocyclic salen complex 1e at room temperature to afford chiral epoxides and diols by hydrolytic kinetic resolution (HKR). Excellent yields (47% with respect to the epoxides, 53% with respect to the diols) and high enantioselectivity (ee>99% for the epoxides, up to 96% for the diols) were achieved in 2.5-16 h. The Co(III) macrocyclic salen complex (1e) maintained its performance on a multigram scale and was expediently recycled a number of times. We further extended our study of chiral epoxides that were synthesized by using HKR to the synthesis of chiral drug molecules (R)-mexiletine and (S)-propranolol.
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Affiliation(s)
- Arghya Sadhukhan
- Discipline of Inorganic Materials and Catalysis, Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research, G. B. Marg, Bhavnagar-364 021, Gujarat, India
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35
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Salavati-Niasari M, Esmaeili E, Seyghalkar H, Bazarganipour M. Cobalt(II) Schiff base complex on multi-wall carbon nanotubes (MWNTs) by covalently grafted method: Synthesis, characterization and liquid phase epoxidation of cyclohexene by air. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.03.056] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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37
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Park J, Lang K, Abboud KA, Hong S. Self-assembly approach toward chiral bimetallic catalysts: bis-urea-functionalized (salen)cobalt complexes for the hydrolytic kinetic resolution of epoxides. Chemistry 2011; 17:2236-45. [PMID: 21294187 DOI: 10.1002/chem.201002600] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Indexed: 11/11/2022]
Abstract
A series of novel bis-urea-functionalized (salen)Co complexes has been developed. The complexes were designed to form self-assembled structures in solution through intermolecular urea-urea hydrogen-bonding interactions. These bis-urea (salen)Co catalysts resulted in rate acceleration (up to 13 times) in the hydrolytic kinetic resolution (HKR) of rac-epichlorohydrin in THF by facilitating cooperative activation, compared to the monomeric catalyst. In addition, one of the bis-urea (salen)Co(III) catalyst efficiently resolves various terminal epoxides even under solvent-free conditions by requiring much shorter reaction time at low catalyst loading (0.03-0.05 mol %). A series of kinetic/mechanistic studies demonstrated that the self-association of two (salen)Co units through urea-urea hydrogen bonds was responsible for the observed rate acceleration. The self-assembly study with the bis-urea (salen)Co by FTIR spectroscopy and with the corresponding (salen)Ni complex by (1)H NMR spectroscopy showed that intermolecular hydrogen-bonding interactions exist between the bis-urea scaffolds in THF. This result demonstrates that self-assembly approach by using non-covalent interactions can be an alternative and useful strategy toward the efficient HKR catalysis.
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Affiliation(s)
- Jongwoo Park
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
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38
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Chen T, Ma X, Wang X, Wang Q, Zhou J, Tang Q. Organosoluble zirconium phosphonate nanocomposites and their supported chiral ruthenium catalysts: The first example of homogenization of inorganic-supported catalyst in asymmetric hydrogenation. Dalton Trans 2011; 40:3325-35. [DOI: 10.1039/c0dt00786b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Haak RM, Castilla AM, Martínez Belmonte M, Escudero-Adán EC, Benet-Buchholz J, Kleij AW. Access to multinuclear salen complexes using olefin metathesis. Dalton Trans 2011; 40:3352-64. [DOI: 10.1039/c0dt01411g] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Bergbreiter DE, Hobbs C, Hongfa C. Polyolefin-Supported Recoverable/Reusable Cr(III)-Salen Catalysts. J Org Chem 2010; 76:523-33. [DOI: 10.1021/jo102044m] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David E. Bergbreiter
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Christopher Hobbs
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Chayanant Hongfa
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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41
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Lang K, Park J, Hong S. Development of Bifunctional Aza-Bis(oxazoline) Copper Catalysts for Enantioselective Henry Reaction. J Org Chem 2010; 75:6424-35. [DOI: 10.1021/jo1009867] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kai Lang
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
| | - Jongwoo Park
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
| | - Sukwon Hong
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
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42
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Zhu X, Venkatasubbaiah K, Weck M, Jones CW. Kinetic Evaluation of Cooperative [Co(salen)] Catalysts in the Hydrolytic Kinetic Resolution of rac-Epichlorohydrin. ChemCatChem 2010. [DOI: 10.1002/cctc.201000162] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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43
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On the Stability and Recyclability of Supported Metal–Ligand Complex Catalysts: Myths, Misconceptions and Critical Research Needs. Top Catal 2010. [DOI: 10.1007/s11244-010-9513-9] [Citation(s) in RCA: 132] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Haak RM, Wezenberg SJ, Kleij AW. Cooperative multimetallic catalysis using metallosalens. Chem Commun (Camb) 2010; 46:2713-23. [DOI: 10.1039/c001392g] [Citation(s) in RCA: 196] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Haak RM, Martínez Belmonte M, Escudero-Adán EC, Benet-Buchholz J, Kleij AW. Olefinmetathesis as a tool for multinuclear Co(iii)salen catalyst construction: access to cooperative catalysts. Dalton Trans 2010:593-602. [DOI: 10.1039/b911856j] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Zulauf A, Mellah M, Hong X, Schulz E. Recoverable chiral salen complexes for asymmetric catalysis: recent progress. Dalton Trans 2010; 39:6911-35. [DOI: 10.1039/c001943g] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Ochiai B, Ito S, Endo T. Chiral interaction between aromatic aldehydes and a polymer bearing large chiral rings obtained by cyclopolymerization of bisacrylamide. Polym J 2009. [DOI: 10.1038/pj.2009.318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Sen R, Bhunia S, Mal D, Koner S, Miyashita Y, Okamoto KI. Layered transition metal carboxylates: efficient reusable heterogeneous catalyst for epoxidation of olefins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13667-13672. [PMID: 19874029 DOI: 10.1021/la902945x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Layered metal carboxylates [M(malonato)(H(2)O)(2)](n) (M = Ni(II) and Mn(II)) that have a claylike structure have been synthesized hydrothermally and characterized. The interlayer separation in these layered carboxylates is comparable to that of the intercalation distance of the naturally occurring clay materials or layered double hydroxides (LDHs). In this study, we have demonstrated that, instead of intercalating the metal complex into layers of the clay or LDH, layered transition metal carboxylates, [M(malonato)(H(2)O)(2)](n), as such can be used as a recyclable heterogeneous catalyst in olefin epoxidation reaction. Metal carboxylates [M(malonato)(H(2)O)(2)](n) exhibit excellent catalytic performance in olefin epoxidation reaction.
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Affiliation(s)
- Rupam Sen
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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49
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Magnetic Nanoparticle Polymer Brush Catalysts: Alternative Hybrid Organic/Inorganic Structures to Obtain High, Local Catalyst Loadings for Use in Organic Transformations. Catal Letters 2009. [DOI: 10.1007/s10562-009-0099-4] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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50
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Keilitz J, Haag R. Intramolecular Acceleration of Asymmetric Epoxide Ring-Opening by Dendritic Polyglycerol Salen-CrIIIComplexes. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900241] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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