1
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Li Q, Yan Y, Jiang Z, Chen T, Li Q. Three-Component Construction of Mesoporous Metal-Organic Frameworks and Their Incorporation into Solid Polymer Electrolytes for Li-Ion Conduction. Inorg Chem 2024; 63:10585-10593. [PMID: 38798023 DOI: 10.1021/acs.inorgchem.4c00937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Solid electrolytes with high ionic conductivity and satisfactory electrochemical stability are essential for the development of solid-state batteries. However, current strategies, including polymer (and polymer-based composite) electrolytes, still face challenges in meeting the bar set by real operations. We seek to improve the Li-ion conduction of the electrolytes by incorporating mesoporous metal-organic frameworks (MOFs) into the polymer matrix. Specifically, MOFs with pores larger than 3.0 nm are constructed by three-component reactions that involve the construction of both coordinative and dynamic imine linkages. The MOFs allow polymer penetration and amorphization and efficient lithium salt dissociation in the confined channels. Numerous metal sites and organic functionalities in the MOF backbone further assist the ion migration by providing strong interactions with the fluorinated polymer and the Li+. Remarkable ionic conductivity (0.95 mS cm-1) and a large lithium transference number (0.64) are achieved. Overall, the study fully utilizes both the MOF structural units with atomic precision and the encompassed space at the mesoscale for solid-state electrolyte development.
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Affiliation(s)
- Qingqing Li
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Yu Yan
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Zhongwen Jiang
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Tianhao Chen
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Qiaowei Li
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
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2
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Yu C, Zhou Y, Zhou Y, Liu Z, Liang M, Huang L, Zhao J. Copper Phenylacetylide and TiO 2 Modification for an Efficient Visible-Light-Driven Oxidative Coupling of Amines. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38684661 DOI: 10.1021/acsami.4c00894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The selective oxidation of amines to imines under mild conditions has attracted much attention. Our study reveals that copper phenylacetylide (PhC2Cu) could serve as an efficient photocatalyst for imine synthesis under visible-light irradiation (>400 nm). Utilizing benzylamine as a model reactant, PhC2Cu achieves an imine yield of 50.4%, which is 5 times higher than that of P25 under the same conditions and comparable to the yield obtained by the 3 wt % Au/P25 photocatalyst (55.4%). Further loading 3.9 nm TiO2 onto PhC2Cu through tetrabutyl titanate hydrolysis increases the imine yield to 84.7%, with a Ti:Cu atomic ratio of 3.65%. Control experiments, photoluminescence (PL) spectra, optical pump terahertz probe (OPTP) spectra, and electron spin resonance (ESR) tests confirm that the optimized TiO2 modification promotes the separation of excited carriers and electron transfer in PhC2Cu and facilitates the activation of surface oxygen, thereby enhancing the formation of superoxide radicals, a key active oxygen species in the reaction system. This work presents a promising strategy for efficient imine synthesis via amine coupling and expands the application field of PhC2Cu-based photocatalysts.
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Affiliation(s)
- Chunzheng Yu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Yiwei Zhou
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
- Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Ye Zhou
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhenkun Liu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Mao Liang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Lei Huang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Jian Zhao
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, P. R. China
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3
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Kmieciak A, Krzemiński MP, Hodii A, Gorczyca D, Jastrzębska A. New Water-Soluble (Iminomethyl)benzenesulfonates Derived from Biogenic Amines for Potential Biological Applications. MATERIALS (BASEL, SWITZERLAND) 2024; 17:520. [PMID: 38276459 PMCID: PMC10817586 DOI: 10.3390/ma17020520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024]
Abstract
In this paper, a highly efficient and straightforward method for synthesizing novel Schiff bases was developed by reacting selected biogenic amines with sodium 2-formylbenzene sulfonate and sodium 3-formylbenzene sulfonate. 1H and 13C NMR, IR spectroscopy, and high-resolution mass spectrometry were used to characterize the new compounds. The main advantages of the proposed procedure include simple reagents and reactions carried out in water or methanol and at room temperature, which reduces time and energy. Moreover, it was shown that the obtained water-soluble Schiff bases are stable in aqueous solution for at least seven days. Additionally, the antioxidant and antimicrobial activity of synthesized Schiff bases were tested.
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Affiliation(s)
- Anna Kmieciak
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Str., 87-100 Torun, Poland; (M.P.K.); (A.H.)
| | - Marek P. Krzemiński
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Str., 87-100 Torun, Poland; (M.P.K.); (A.H.)
| | - Anastasiia Hodii
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Str., 87-100 Torun, Poland; (M.P.K.); (A.H.)
| | - Damian Gorczyca
- Faculty of Medicine, Lazarski University, 43 Świeradowska Str., 02-662 Warsaw, Poland;
- LymeLab Pharma, Kochanowskiego 49A Str., 01-864 Warsaw, Poland
| | - Aneta Jastrzębska
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Str., 87-100 Torun, Poland; (M.P.K.); (A.H.)
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4
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Park LH, Leitao EM, Weber CC. Green imine synthesis from amines using transition metal and micellar catalysis. Org Biomol Chem 2024; 22:202-227. [PMID: 38018443 DOI: 10.1039/d3ob01730c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Imines are a versatile class of chemicals with applications in pharmaceuticals and as synthetic intermediates. While imines are conventionally synthesized via aldehyde-amine condensation, their direct preparation from amines can avoid the need for the independent preparation of the aldehyde coupling partner and associated constraints with regard to aldehyde storage and purification. The direct preparation of imines from amines typically utilizes transition metal catalysis and is often well-aligned with green chemistry principles. This review provides a comprehensive overview of transition metal catalysed imine synthesis, with a particular focus on the copper-catalyzed oxidative coupling of amines. The emerging application of micellar catalysis for imine synthesis is also surveyed due to its potential to avoid the use of hazardous solvents and intensify these reactions through reduced catalyst loadings and locally increased reactant concentrations. Future directions relating to the confluence of these two areas are proposed towards the more sustainable preparation of imines.
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Affiliation(s)
- Luke H Park
- School of Chemical Sciences, The University of Auckland, Private Bag, 92019, Auckland, 1142, New Zealand.
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Kelburn, Wellington, 6012, New Zealand
| | - Erin M Leitao
- School of Chemical Sciences, The University of Auckland, Private Bag, 92019, Auckland, 1142, New Zealand.
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Kelburn, Wellington, 6012, New Zealand
| | - Cameron C Weber
- School of Chemical Sciences, The University of Auckland, Private Bag, 92019, Auckland, 1142, New Zealand.
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Kelburn, Wellington, 6012, New Zealand
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5
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Guo H, Qiu Y, Liu S, Zhang X, Zhao J. Tailoring flavin-based photosensitizers for efficient photooxidative coupling of benzylic amines. Phys Chem Chem Phys 2023; 26:161-173. [PMID: 38086643 DOI: 10.1039/d3cp04579j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Photooxidative coupling of benzylic amines using naturally abundant O2 as an oxidant under visible light irradiation is an alternative green approach to synthesis imines and is of both fundamental and practical significance. We investigated the photophysical properties of flavin (FL) that is a naturally available sensitizer and its derivatives, i.e. 9-bromoflavin (MB-FL), 7,8-dibromoflavin (DB-FL) and 10-phenylflavin (Ph-FL), as well as the performance of these FL-based sensitizers (FLPSs) in the photooxidative coupling of benzylic amines to imines combining experimental and theoretical efforts. We showed that chemical functionalization with Br and phenyl effectively improves the photophysical properties of these FLPSs, in terms of absorption in the visible light range, singlet oxygen quantum yields, triplet lifetime, etc. Apart from nearly quantitative selectivity for the production of imines, the performance of DB-FL is superior to those of other FLPSs, and it is among the best photocatalysts for imine synthesis. Specifically, 0.5 mol% DB-FL is capable of converting 91% of 0.2 mmol benzylamine and more than 80% of 0.2 mmol fluorobenzylic amine derivatives into their corresponding imines in 5 h batch runs. Mechanistic investigation finely explained the observed photophysical properties of FLPSs and highlighted the dominant role of electron transfer in FLPS sensitized coupling of benzylic amines to imines. This work not only helps to understand the pathways for photocatalysis with FLPSs but also paves the way for the design of novel and efficient PSs to promote organic synthesis.
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Affiliation(s)
- Huimin Guo
- School of Chemistry, Dalian University of Technology, No. 2, Linggong Road, Dalian, 116024, P. R. China.
| | - Yang Qiu
- School of Chemistry, Dalian University of Technology, No. 2, Linggong Road, Dalian, 116024, P. R. China.
| | - Siyu Liu
- School of Chemistry, Dalian University of Technology, No. 2, Linggong Road, Dalian, 116024, P. R. China.
| | - Xiangyu Zhang
- School of Chemistry, Dalian University of Technology, No. 2, Linggong Road, Dalian, 116024, P. R. China.
| | - Jianzhang Zhao
- School of Chemistry, Dalian University of Technology, No. 2, Linggong Road, Dalian, 116024, P. R. China.
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6
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Kumar N, Yadav RK, Umar A, Ibrahim AA, Singh S, Shahin R, Singh AP, Gupta AK, Gupta NK, Baeg JO, Dwivedi DK, Baskoutas S. Selective aerobic coupling of amines to imines using solar spectrum-responsive flower-like Nen-graphene quantum dots (GQDs) decorated with 2, 4-dinitrophenylhydrazine (PH) as a photocatalyst. CHEMOSPHERE 2023; 341:139697. [PMID: 37567274 DOI: 10.1016/j.chemosphere.2023.139697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/09/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023]
Abstract
Indeed, the development of ecologically benign molecular fabrication methods for highly efficient graphene quantum dots-based photocatalysts is of great significant. Graphene quantum dots-based photocatalysts have promising applications in various field, including environmental remediation, energy conversion, and splitting of water. However, ensuring resource reusability and minimizing the environmental impact are crucial considerations in the development. From this perspective, attention has also been paid to the creation of easy to make solar light harvesting graphene quantum dots-based photocatalysts for synthesising pharmaceuticals and functional imines compounds. Imines are excellent significant building blocks in pharmaceutical chemistry and excellent examples of these valuable compounds' synthetic intermediates, and the environmentally friendly oxidative synthesis of imines from amines. Therefore, herein, we designed a facile and efficient condensation route to synthesize the Nen-GQDs@PH photocatalyst. This route involves coupling of 2,4-dinitrophenylhydrazine (PH) with nitrogen-enriched graphene quantum dots (Nen-GQDs). The Nen-GQDs@PH as photocatalyst functions in a highly selective and efficient manner, leading to high amines conversion efficiency to imines (95%). Our results highlight a novel and environmentally safe approach for generating highly selective imines from various types of amines, setting a new benchmark in the current research field.
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Affiliation(s)
- Neetesh Kumar
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Rajesh K Yadav
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India.
| | - Ahmad Umar
- Department of Chemistry, College of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia; Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA.
| | - Ahmed A Ibrahim
- Department of Chemistry, College of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia
| | - Satyam Singh
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Rehana Shahin
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Atul P Singh
- Department of Chemistry, Chandigarh University, Mohali, 140413, India
| | - Abhishek K Gupta
- Nanoionic and Energy Storage Laboratory (NanoESL), Department of Physics and Material Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, UP, India
| | - Navneet K Gupta
- Centre for Sustainable Technologies, Indian Institute of Science, Gulmohar Marg, Mathikere, Bengaluru, 560012, India
| | - Jin Ook Baeg
- Korea Research Institute of Chemical Technology, N3, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, South Korea.
| | - Dilip K Dwivedi
- Department of Physics and Materials Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Sotirios Baskoutas
- Department of Materials Science, University of Patras, 26500, Patras, Greece
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7
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Zhong B, Chen F, Ge Y, Liu D. Developing a fast and catalyst-free protocol to form C=N double bond with high functional group tolerance. ROYAL SOCIETY OPEN SCIENCE 2023; 10:231263. [PMID: 37800155 PMCID: PMC10548102 DOI: 10.1098/rsos.231263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 09/12/2023] [Indexed: 10/07/2023]
Abstract
The carbon-nitrogen double bond (C=N) is a fundamentally important functional group in organic chemistry. This is largely due to the fact that C=N acts as electrophilic synthon to give nitrogen-containing compounds. Here, we report the condensation of primary amine or hydrazine with very electron-deficient aldehyde to form C=N bond in the absence of any catalysts (metals and acids). The protocol performs at room temperature and applies water as co-solvent. Two hundred examples are presented here. With its intrinsic advantages of wide substrate scopes, excellent efficiency (high yields and short reaction time), operational simplicity, mild condition (room temperature as reaction temperature, no catalysts, no additions, water as co-solvent and opening to air) and available starting materials, the protocol can be compatible with various drugs, prodrugs, dyes and pharmacophores containing primary amino group. In addition, we also successfully apply this protocol to rapidly synthesize the core scaffolds of bioactive molecules.
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Affiliation(s)
- Bin Zhong
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
| | - Feng Chen
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
| | - Yushu Ge
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
| | - Dan Liu
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
- The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui 230001, People's Republic of China
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8
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Shen GB, Qian BC, Luo GZ, Fu YH, Zhu XQ. Thermodynamic Evaluations of Amines as Hydrides or Two Hydrogen Ions Reductants and Imines as Protons or Two Hydrogen Ions Acceptors, as Well as Their Application in Hydrogenation Reactions. ACS OMEGA 2023; 8:31984-31997. [PMID: 37692224 PMCID: PMC10483529 DOI: 10.1021/acsomega.3c03804] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/10/2023] [Indexed: 09/12/2023]
Abstract
Since the hydrogenation of imines (X) and the dehydrogenation of amines (XH2) generally involve the two hydrogen ions (H- + H+) transfer, the thermodynamic abilities of various amines releasing hydrides or two hydrogen ions as well as various imines accepting protons or two hydrogen ions are important and characteristic physical parameters. In this work, the pKa values of 84 protonated imines (XH+) in acetonitrile were predicted. Combining Gibbs free energy changes of amines releasing hydrides in acetonitrile from our previous work with the pKa(XH+) values, the Gibbs free energy changes of amines releasing two hydrogen ions and imines accepting two hydrogen ions were derived using Hess's law by constructing thermochemical cycles, and the thermodynamic evaluations of amines as hydrides or two hydrogen ions reductants and imines as protons or two hydrogen ions acceptors are well compared and discussed. Eventually, the practical application of thermodynamic data for amines and imines on hydrogenation feasibility, mechanism, and possible elementary steps was shown and discussed in this paper from the point of thermodynamics.
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Affiliation(s)
- Guang-Bin Shen
- School
of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Bao-Chen Qian
- School
of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Guang-Ze Luo
- School
of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Yan-Hua Fu
- College
of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, China
| | - Xiao-Qing Zhu
- The
State Key Laboratory of Elemento-Organic Chemistry, Department of
Chemistry, Nankai University, Tianjin 300071, China
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9
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Lima Oliveira R, Ledwa KA, Chernyayeva O, Praetz S, Schlesiger C, Kepinski L. Cerium Oxide Nanoparticles Confined in Doped Mesoporous Carbons: A Strategy to Produce Catalysts for Imine Synthesis. Inorg Chem 2023; 62:13554-13565. [PMID: 37555784 DOI: 10.1021/acs.inorgchem.3c01985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
A group of (doped N or P) carbons were synthesized using soluble starch as a carbon precursor. Further, ceria nanoparticles (NPs) were confined into these (doped) carbon materials. The obtained solids were characterized by various techniques such as N2 physisorption, XRD, TEM, SEM, XPS, and XAS. These materials were used as catalysts for the oxidative coupling between benzyl alcohol and aniline as the model reaction. Ceria immobilized on mesoporous-doped carbon shows higher activity than the other materials, benchmark catalysts, and most of the previously reported catalysts. The control of the ceria NP size, the presence of Ce3+ cations, and an increment in the disorder in the ceria NP structure caused by a support-ceria interaction could increase the number of oxygen vacancies and improve its catalytic performance. CN-meso/CeO2 was also used as the catalyst for a rich scope of substrates, such as substituted aromatic alcohols, linear alcohols, and different types of amines. The influence of various reaction parameters (substrate content, reaction temperature, and catalyst content) on the activity of this catalyst was also checked.
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Affiliation(s)
- Rafael Lima Oliveira
- Institute of Low Temperature and Structure Research of the Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Karolina A Ledwa
- Institute of Low Temperature and Structure Research of the Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Olga Chernyayeva
- Institute of Physical Chemistry of the Polish Academy of Sciences, 01-224 Warsaw, Poland
| | - Sebastian Praetz
- Department of Optics and Atomic Physics, Technische Universitat Berlin, 10623 Berlin, Germany
| | - Christopher Schlesiger
- Department of Optics and Atomic Physics, Technische Universitat Berlin, 10623 Berlin, Germany
| | - Leszek Kepinski
- Institute of Low Temperature and Structure Research of the Polish Academy of Sciences, 50-422 Wroclaw, Poland
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10
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Grosjean M, Berne D, Caillol S, Ladmiral V, Nottelet B. Dynamic PEG-PLA/Hydroxyurethane Networks Based on Imine Bonds as Reprocessable Elastomeric Biomaterials. Biomacromolecules 2023; 24:3472-3483. [PMID: 37458381 DOI: 10.1021/acs.biomac.3c00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
The development of dynamic covalent chemistry opens the way to the design of materials able to be reprocessed by an internal exchange reaction under thermal stimulus. Imine exchange differs from other exchange reactions by its relatively low temperature of activation. In this study, amine-functionalized star-shaped PEG-PLA and an aldehyde-functionalized hydroxyurethane modifier were combined to produce PEG-PLA/hydroxyurethane networks incorporating imine bonds. The thermal and mechanical properties of these new materials were evaluated as a function of the initial ratio of amine/aldehyde used during synthesis. Rheological analyses highlighted the dynamic behavior of these vitrimers at moderate temperature (60-85 °C) and provided the flow activation energies. Additionally, the reprocessability of these PEG-PLA/hydroxyurethane vitrimers was assessed by comparing the material properties before reshaping and after three reprocessing cycles (1 ton, 1 h, 70 °C). Hence, these materials can easily be designed to satisfy a specific medical application without properties loss. This work opens the way to the development of a new generation of dynamic materials combining degradable PEG-PLA copolymers and hydroxyurethane modifiers, which could find applications in the shape of medical devices on-demand under mild conditions.
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Affiliation(s)
| | - Dimitri Berne
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34090, France
| | - Sylvain Caillol
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34090, France
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11
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Escorihuela J, Lledós A, Ujaque G. Anti-Markovnikov Intermolecular Hydroamination of Alkenes and Alkynes: A Mechanistic View. Chem Rev 2023; 123:9139-9203. [PMID: 37406078 PMCID: PMC10416226 DOI: 10.1021/acs.chemrev.2c00482] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Indexed: 07/07/2023]
Abstract
Hydroamination, the addition of an N-H bond across a C-C multiple bond, is a reaction with a great synthetic potential. Important advances have been made in the last decades concerning catalysis of these reactions. However, controlling the regioselectivity in the amine addition toward the formation of anti-Markovnikov products (addition to the less substituted carbon) still remains a challenge, particularly in intermolecular hydroaminations of alkenes and alkynes. The goal of this review is to collect the systems in which intermolecular hydroamination of terminal alkynes and alkenes with anti-Markovnikov regioselectivity has been achieved. The focus will be placed on the mechanistic aspects of such reactions, to discern the step at which regioselectivity is decided and to unravel the factors that favor the anti-Markovnikov regioselectivity. In addition to the processes entailing direct addition of the amine to the C-C multiple bond, alternative pathways, involving several reactions to accomplish anti-Markovnikov regioselectivity (formal hydroamination processes), will also be discussed in this review. The catalysts gathered embrace most of the metal groups of the Periodic Table. Finally, a section discussing radical-mediated and metal-free approaches, as well as heterogeneous catalyzed processes, is also included.
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Affiliation(s)
- Jorge Escorihuela
- Departament
de Química Orgànica, Universitat
de València, 46100 Burjassot, Valencia, Spain
| | - Agustí Lledós
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Gregori Ujaque
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
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12
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Guo Y, Li H, Li B, Su S, Zhong X, Kong D, Chen Y, Song Y. Enhanced Photocatalytic Coupling of Benzylamine to N-Benzylidene Benzylamine over the Organic-Inorganic Composites F70-TiO 2 Based on Fullerenes Derivatives and TiO 2. Molecules 2023; 28:molecules28114301. [PMID: 37298775 DOI: 10.3390/molecules28114301] [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: 04/30/2023] [Revised: 05/15/2023] [Accepted: 05/18/2023] [Indexed: 06/12/2023] Open
Abstract
The organic-inorganic composites F70-TiO2, based on fullerene with carboxyl group derivatives and TiO2 semiconductor, have been designed and constructed to become an optical-functional photocatalyst via the facile sol-gel method. The composite photocatalyst obtained shows excellent photocatalytic activity for the high-efficiency conversion of benzylamine (BA) to N-benzylidene benzylamine (NBBA) with air pressure at a normal temperature under visible light irradiation. By optimizing the composition, the composites with the 1:15 mass ratio of F70 and TiO2, denoted as F70-TiO2(1:15), demonstrated the highest reaction efficiency for benzylamine (>98% conversion) to N-benzylidene benzylamine (>93% selectivity) in this study. However, pure TiO2 and fullerene derivatives (F70) exhibit decreased conversion (56.3% and 89.7%, respectively) and selectivity (83.8% and 86.0%, respectively). The UV-vis diffuse reflectance spectra (DRS) and Mott-Schottky experiment's results indicate that the introduction of fullerene derivatives into anatase TiO2 would greatly broaden the visible light response range and adjust the energy band positions of the composites, enhancing the sunlight utilization and promoting the photogenerated charge (e--h+) separation and transfer. Specifically, a series of results on the in situ EPR tests and the photo-electrophysical experiment indicate that the separated charges from the hybrid could effectively activate benzylamine and O2 to accelerate the formation of active intermediates, and then couple with free BA molecules to form the desired production of N-BBA. The effective combination, on a molecular scale, between fullerene and titanium dioxide has provided a profound understanding of the photocatalysis mechanism. This work elaborates and makes clear the relationship between the structure and the performance of functional photocatalysts.
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Affiliation(s)
- Yanmeng Guo
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Hang Li
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Bo Li
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Shizhuo Su
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Xin Zhong
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Derui Kong
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Yifan Chen
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Yujie Song
- Hainan Provincial Key Laboratory of Fine Chemicals, College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
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13
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Lopes JC, Moniz T, Sampaio MJ, Silva CG, Rangel M, Faria JL. Efficient synthesis of imines using carbon nitride as photocatalyst. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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14
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Mazibuko M, Jeena V. Synthesis of 2,4,5-Trisubstituted Oxazoles from Copper-Mediated Benzylic sp 3 C-H Aerobic Oxidative Annulation of Ketones and Amines via a Cascade Reaction. J Org Chem 2023; 88:1227-1234. [PMID: 36575054 DOI: 10.1021/acs.joc.2c02148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The functionalization of sp3 carbons is deemed challenging in synthetic organic chemistry yet has tremendous potential in producing potent organic compounds. A facile synthesis of 2,4,5-trisubstituted oxazoles through an oxidative, copper-catalyzed, and solvent-free annulation is described. Various arylated oxazoles were efficaciously synthesized at a mild temperature from readily available substrates under a molecular oxygen atmosphere. Preliminary mechanistic studies suggested that the reaction proceeds via an anionic-type mechanism and indicated the formation of a keto-imine intermediate. The reaction is notable for the abstraction of six hydrogen atoms, the functionalization of one sp2 carbon and two sp3 carbons, and the formation of C-O and C-N bonds.
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Affiliation(s)
- Mncedisi Mazibuko
- School of Chemistry and Physics, University of KwaZulu-Natal, Scottsville, Pietermaritzburg 3209, South Africa
| | - Vineet Jeena
- School of Chemistry and Physics, University of KwaZulu-Natal, Scottsville, Pietermaritzburg 3209, South Africa
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15
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Cao Y, Chen D, Wang Y, Shi H, Feng B, Xia C, Ding Y, He L. Red mud-mediated cross-coupling of alcohols and amines to imines over MnO catalysts. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2022.112883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Yamamoto Y, Kodama S, Nomoto A, Ogawa A. Innovative green oxidation of amines to imines under atmospheric oxygen. Org Biomol Chem 2022; 20:9503-9521. [PMID: 36218331 DOI: 10.1039/d2ob01421a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In recent years, the development of environmentally benign molecular construction methods has been of great importance, and especially, resource recycling, high atomic efficiency, and low environmental impact are in high demand. From this point of view, attention has also been focused on the development of one-pot synthesis of pharmaceuticals and functional molecules. Imines are excellent synthetic intermediates of these useful molecules, and the environmentally friendly oxidative synthesis of imines from amines has been energetically developed using oxygen (or air), which is abundantly available on the Earth, as an oxidant. This review focuses on the latest innovative and green oxidation systems of amines to imines under atmospheric oxygen, and their application to one-pot/eco-friendly and sustainable synthesis of pharmaceuticals and functional molecules. In particular, catalytic systems that activate molecular oxygen are categorized and described in detail as transition metal catalytic systems, photoirradiated catalytic systems, and organocatalytic systems.
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Affiliation(s)
- Yuki Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan.
| | - Shintaro Kodama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan.
| | - Akihiro Nomoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan.
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan.
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17
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Yasukawa T, Nakajima H, Masuda R, Yamashita Y, Kobayashi S. Effect of Activation Methods of Molecular Sieves on Ketimine Synthesis. J Org Chem 2022; 87:13750-13756. [PMID: 36173811 DOI: 10.1021/acs.joc.2c01411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although the use of molecular sieves for imine synthesis is a common protocol, there have been no comprehensive studies on heat-drying methods. This can be crucial for reproducibility. It was found that molecular sieve 5A dried at 160 °C for 5 h under vacuum efficiently promoted the condensation of various ketones and amines to afford even relatively bulky ketimines. Several control experiments and analyses revealed that only a small amount of Brønsted acid sites was important for the activity, rather than dehydration ability. Other types of molecular sieves could be utilized for the reaction after treatment with water followed by heat drying. A continuous-flow acetalization reaction of alcohols using the activated molecular sieve 5A was also demonstrated.
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Affiliation(s)
- Tomohiro Yasukawa
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hanako Nakajima
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ryusuke Masuda
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yasuhiro Yamashita
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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18
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Gao H, Liu H, Lin C, Sha L, Yang Y, Zhuang G, Wang X, Zhan W, Han X. Immobilization of AgCl/Pd Heterojunctions on Nitrogen‐Doped Carbon Nanotubes: Interfacial Design‐Induced Electronic Regulation Enhances Photocatalytic Activity. Chemistry 2022; 28:e202202433. [DOI: 10.1002/chem.202202433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Hao Gao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of Chemistry School of Chemistry and Chemical Engineering Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Huade Liu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of Chemistry School of Chemistry and Chemical Engineering Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Cunbiao Lin
- Laboratory of Molecular Catalysis & Computational Materials Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Linna Sha
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of Chemistry School of Chemistry and Chemical Engineering Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Yun Yang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of Chemistry School of Chemistry and Chemical Engineering Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Guilin Zhuang
- Laboratory of Molecular Catalysis & Computational Materials Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Xiaojun Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of Chemistry School of Chemistry and Chemical Engineering Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Wenwen Zhan
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of Chemistry School of Chemistry and Chemical Engineering Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Xiguang Han
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of Chemistry School of Chemistry and Chemical Engineering Jiangsu Normal University Xuzhou 221116 P. R. China
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19
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Zhai S, Forsyth C, Liu Z, Vidović D. Synthesis of Mono- and Acyclic Bis-aminoboranes via Controlled Hydroboration of Imines. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Siyuan Zhai
- School of Chemistry, Faculty of Sciences, Monash University, 3800 Clayton, Australia
| | - Craig Forsyth
- School of Chemistry, Faculty of Sciences, Monash University, 3800 Clayton, Australia
| | - Zhizhou Liu
- School of Chemistry, Faculty of Sciences, Monash University, 3800 Clayton, Australia
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Dragoslav Vidović
- School of Chemistry, Faculty of Sciences, Monash University, 3800 Clayton, Australia
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20
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Pandey VK, Tiwari CS, Rit A. Silver Catalyzed One-Pot Three-Component Synthesis of α-Aminonitriles and Biologically Relevant α-Amino-phosphonates. Chem Asian J 2022; 17:e202200703. [PMID: 35950231 DOI: 10.1002/asia.202200703] [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: 07/06/2022] [Revised: 08/10/2022] [Indexed: 11/07/2022]
Abstract
A simple silver salt (AgSbF6) catalyzed aminophosphonylation and Strecker reaction have been developed and successfully applied to a wide range of substrates (>55 substrates). This solvent-, ligand-, and base-free one-pot three component protocol operates effectively at room temperature to provide diversified α-aminophosphonates and α-aminonitriles, which gave access to the respective α-amino amides. Importantly, the present catalyst system is also capable to produce the rarely reported and biologically relevant aminophosphonates (having anti-leishmanial activity). Further, the mechanistic studies reveal that the present phosphonylation protocol follows a radical pathway.
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Affiliation(s)
- Vipin K Pandey
- Indian Institute of Technology Madras, Department of Chemistry, INDIA
| | | | - Arnab Rit
- Indian Institute of Technology, Madras, Department of Chemistry, Sardar patel Road, 600036, Chennai, INDIA
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21
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Li H, Chen W, Yuan Z, Jin Y, Zhao Y, Ma P, Niu J, Wang J. Controlled Assembly of Ru-Containing Polyoxometalates for Photocatalytic Activity of the Primary Amine Coupling Reaction. Inorg Chem 2022; 61:9935-9945. [PMID: 35711090 DOI: 10.1021/acs.inorgchem.2c00718] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three Ru-induced structural interconversion polyoxometalates (POMs), Na13H5[Ru4(H2O)2(Cl)2(WO2)4(AsW9O33)4]·43H2O (1), K5Na9H8[Ru2(WO2)4(AsW9O33)4]·50H2O (2), and KNa13H14[(WO2)4(AsW9O33)4]·34H2O (3), were successfully synthesized and thoroughly characterized. Interconversion of structures was accomplished by changing the number of active sites for compounds 1-3. All three compounds contain one {As4W40O140} unit, showing similar structural characteristics except for the active center number (Ru). Interestingly, compound 1 [turnover number (TON)= 486; turnover frequency (TOF)= 20 h-1] showed highly efficient photocatalysis in achieving oxidative coupling of primary amines. Compound 2 (TON = 406, TOF = 17 h-1) was also found to promote the oxidative coupling with relatively poor efficiency; however, compound 3 (TON = 178; TOF = 7.4 h-1) had no obvious contribution to the coupling reaction system, and a chain of evidence indicates that the catalytic performances are strongly dependent on element contents of active sites. Furthermore, the Ru-containing POM-based photocatalysts are conveniently recyclable and reusable during the photocatalytic processes. This study demonstrates the possibility of tuning the catalytic efficiency and stability of POM-based photocatalysts by well designing and controlling their structures. The possible reaction mechanism for the photocatalysis synthesis of imine product is also proposed based on experimental studies.
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Affiliation(s)
- Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Wenjing Chen
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Zelong Yuan
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Yuzhen Jin
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Yujie Zhao
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
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22
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Ultrasonic energy for construction of bioactive heterocycles. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Affiliation(s)
| | - Brian R. James
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
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24
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Novel Enzymatic Method for Imine Synthesis via the Oxidation of Primary Amines Using D-Amino Acid Oxidase from Porcine Kidney. Catalysts 2022. [DOI: 10.3390/catal12050511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
During studies on the oxidative cyanation reaction catalyzed by a variant of D-amino acid oxidase from porcine kidney (pkDAO) (Y228L/R283G), an unexpected formation of 1-phenyl-N-(1-phenylethylidene)ethanamine (PPEA) was detected. The optimal reaction conditions for the synthesis of PPEA and the reaction mechanism were investigated using the pkDAO variant. The highest PPEA synthesis was obtained in the reaction with 150 mM (R)-MBA at pH 9.0 and at 20 °C. Since PPEA synthesis proceeded by trapping the intermediate 1-phenylethanimine (1-PEI) by 15N-labeled n-hexylamine, which is not a substrate for the pKDAO variant, it was deduced that PPEA would be synthesized by a nucleophilic substitution of 1-PEI by another molecule of (R)-MBA. PPEA was further identified by its conversion to bis(1-phenylethyl)amine (BPEA) through reduction with NaBH4. Thus, a new enzymatic method of imine synthesis by oxidation of primary amine by the variant pkDAO was achieved for the first time.
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25
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Marques MMB, Royo B, Raydan D, Friães S, Viduedo N, Santos AS, Gomes C. Manganese-catalyzed Synthesis of Imines from Primary Alcohols and Aromatic Amines. Synlett 2022. [DOI: 10.1055/a-1828-1678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Herein, we describe the synthesis of a wide variety of imines through oxidative coupling of alcohols and (hetero)aromatic amines catalyzed by Mn complexes bearing N^N triazole ligands. A wide variety of imines in excellent yields (up to 99%) have been prepared. Mn-based catalysts proved to be highly efficient and versatile, allowing for the first time, the preparation of several imines containing N-based heterocycles.
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Affiliation(s)
- Maria M B Marques
- Chemistry, Universidade Nova de Lisboa Faculdade de Ciencias e Tecnologia, Caparica, Portugal
| | | | | | | | | | - Ana Sofia Santos
- Chemistry, Universidade Nova de Lisboa Faculdade de Ciencias e Tecnologia, Caparica, Portugal
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26
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Jiménez-Almarza A, López-Magano A, Mas-Ballesté R, Alemán J. Tuning the Activity-Stability Balance of Photocatalytic Organic Materials for Oxidative Coupling Reactions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:16258-16268. [PMID: 35348315 PMCID: PMC9011354 DOI: 10.1021/acsami.2c01646] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Three materials containing a photoactive unit, 10-phenyl phenothiazine (PTH), have been studied for the visible light-mediated oxidative coupling of amines. In particular, the materials considered are assembled through the condensation of extended polyimine, polyhydrazone, or polytriazine frameworks. These three materials present different stabilities in the presence of strong nucleophiles such as amines, which is a key factor for efficient catalytic performance. In the series of materials reported herein, the triazine-based material shows the optimal compromise between activity and stability when studied for the oxidative coupling of amines, achieving imine products. Accordingly, while significant leaching of molecular active fragments is ruled out for triazine-based polymers, other materials of the series show a significant chemical erosion as a result of the reaction with the amine substrates. Consequently, only a triazine-based material allows performing several catalytic cycles (up to seven) with yields higher than 80%. The applicability of this heterogeneous catalyst has been proven with a variety of substrates, confirming its stability and obtaining diverse imine coupling products with excellent yields.
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Affiliation(s)
- Alicia Jiménez-Almarza
- Department
of Inorganic Chemistry (Module 7), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Alberto López-Magano
- Department
of Inorganic Chemistry (Module 7), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Rubén Mas-Ballesté
- Department
of Inorganic Chemistry (Module 7), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - José Alemán
- Institute
for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Department
of Organic Chemistry (Module 1), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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27
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The effect of molecular planarity and resonant effects on supramolecular structures of N-(5-pyrazolyl)imines by X-ray crystallographic analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Niobium Oxide Supported on Cubic Spinel Cobalt Oxide as an Efficient Heterogeneous Catalyst for the Synthesis of Imines via Dehydrogenative Coupling of Amines and Alcohols. Catal Letters 2022. [DOI: 10.1007/s10562-022-03943-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Chen H, Tang T, Malapit CA, Lee YS, Prater MB, Weliwatte NS, Minteer SD. One-Pot Bioelectrocatalytic Conversion of Chemically Inert Hydrocarbons to Imines. J Am Chem Soc 2022; 144:4047-4056. [DOI: 10.1021/jacs.1c13063] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hui Chen
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Tianhua Tang
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Christian A. Malapit
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Yoo Seok Lee
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Matthew B. Prater
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - N. Samali Weliwatte
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Shelley D. Minteer
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
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30
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Lian C, Zhang C, Zhao Y, Wang H, Li X, Huang L. Oxidative coupling of primary amines to imines catalyzed by CoCl
2
·6H
2
O. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chengxi Lian
- State Key Laboratory Base for Eco‐Chemical Engineering, College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
| | - Chaoying Zhang
- State Key Laboratory Base for Eco‐Chemical Engineering, College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
| | - Yingchun Zhao
- State Key Laboratory Base for Eco‐Chemical Engineering, College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
| | - Hui Wang
- State Key Laboratory Base for Eco‐Chemical Engineering, College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
| | - Xiufen Li
- State Key Laboratory Base for Eco‐Chemical Engineering, College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
| | - Longjiang Huang
- State Key Laboratory Base for Eco‐Chemical Engineering, College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
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31
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Laha JK, Hunjan MK. Diversity in Heterocycle Synthesis Using α-Iminocarboxylic Acids: Decarboxylation Dichotomy. J Org Chem 2022; 87:2315-2323. [DOI: 10.1021/acs.joc.1c02110] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Joydev K. Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Mandeep Kaur Hunjan
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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32
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Zhou J, Mao L, Wu MX, Peng Z, Yang Y, Zhou M, Zhao XL, Shi X, Yang HB. Extended phenothiazines: synthesis, photophysical and redox properties, and efficient photocatalytic oxidative coupling of amines. Chem Sci 2022; 13:5252-5260. [PMID: 35655566 PMCID: PMC9093200 DOI: 10.1039/d2sc01086k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/08/2022] [Indexed: 11/21/2022] Open
Abstract
Herein, we successfully developed a ring-fusion approach to extend the conjugation length of phenothiazines that were demonstrated to be efficient photocatalysts for visible-light-driven oxidative coupling reactions of amines under an air atmosphere.
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Affiliation(s)
- Jun Zhou
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Lijun Mao
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Meng-Xiang Wu
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Zhiyong Peng
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Yiming Yang
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Manfei Zhou
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Xiao-Li Zhao
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Xueliang Shi
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
| | - Hai-Bo Yang
- School of Chemistry and Molecular Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, 3663 N, Zhongshan Road, Shanghai 200062, P. R. China
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33
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Yamamoto Y, Ota M, Kodama S, Ueshima M, Nomoto A, Ogawa A, Furuya M, Kawakami K. Excellent Catalytic Performances of a Au/C-CuO Binary System in the Selective Oxidation of Benzylamines to Imines under Atmospheric Oxygen. ACS OMEGA 2021; 6:34339-34346. [PMID: 34963919 PMCID: PMC8697021 DOI: 10.1021/acsomega.1c04046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/03/2021] [Indexed: 06/14/2023]
Abstract
A green method of the oxidation of benzylamines to imines was developed using a novel binary system of Au/C-CuO. This system was evaluated under atmospheric oxygen, and the corresponding imines were obtained in up to 100% yields by loading 0.006 mol % of Au/C and 1.25 mol % of CuO under mild conditions. This system was also successfully applied to the syntheses of N-containing functional molecules, as well as that of imines on the scale of several grams. Furthermore, the turnover number of the system (more than 8000 times on a gold basis) as well as its ability to be reused more than 10 times for benzylamine oxidation demonstrates the excellent durability and recyclability of the developed system.
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Affiliation(s)
- Yuki Yamamoto
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Miyuto Ota
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Shintaro Kodama
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Michio Ueshima
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akihiro Nomoto
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akiya Ogawa
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Mitsunori Furuya
- Science
& Innovation Center, Mitsubishi Chemical
Corporation, 1000 Kamoshida-cho, Aoba-ku, Yokohama-shi, Kanagawa 227-8502, Japan
| | - Kiminori Kawakami
- Science
& Innovation Center, Mitsubishi Chemical
Corporation, 1000 Kamoshida-cho, Aoba-ku, Yokohama-shi, Kanagawa 227-8502, Japan
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34
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Troschke E, Oschatz M, Ilic IK. Schiff‐bases for sustainable battery and supercapacitor electrodes. EXPLORATION 2021; 1. [PMCID: PMC10190993 DOI: 10.1002/exp.20210128] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/02/2021] [Indexed: 06/15/2023]
Affiliation(s)
- Erik Troschke
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Institute for Technical Chemistry and Environmental Chemistry, Friedrich‐Schiller‐University Jena Jena Germany
| | - Martin Oschatz
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Institute for Technical Chemistry and Environmental Chemistry, Friedrich‐Schiller‐University Jena Jena Germany
| | - Ivan K. Ilic
- Center for Nano Science and Technology@PoliMi Istituto Italiano di Tecnologia Milan Italy
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35
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CuO-NPs/TFA: a New Catalytic System to Synthesize a Novel Series of Pyrazole Imines with High Antioxidant Properties. BIONANOSCIENCE 2021. [DOI: 10.1007/s12668-021-00888-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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36
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Regioselective Mercury(I)/Palladium(II)-Catalyzed Single-Step Approach for the Synthesis of Imines and 2-Substituted Indoles. Molecules 2021; 26:molecules26134092. [PMID: 34279432 PMCID: PMC8271454 DOI: 10.3390/molecules26134092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 12/21/2022] Open
Abstract
An efficient synthesis of ketimines was achieved through a regioselective Hg(I)-catalyzed hydroamination of terminal acetylenes in the presence of anilines. The Pd(II)-catalyzed cyclization of these imines into the 2-substituted indoles was satisfactorily carried out by a C-H activation. In a single-step approach, a variety of 2-substituted indoles were also generated via a Hg(I)/Pd(II)-catalyzed, one-pot, two-step process, starting from anilines and terminal acetylenes. The arylacetylenes proved to be more effective than the alkyl derivatives.
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37
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Spatial intimacy of binary active-sites for selective sequential hydrogenation-condensation of nitriles into secondary imines. Nat Commun 2021; 12:3382. [PMID: 34099687 PMCID: PMC8184996 DOI: 10.1038/s41467-021-23705-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 05/06/2021] [Indexed: 11/18/2022] Open
Abstract
Precisely controlling the spatial intimacy of multiple active sites at sub-nanoscale in heterogeneous catalysts can improve their selectivity and activity. Herein, we realize a highly selective nitrile-to-secondary imine transformation through a cascaded hydrogenation and condensation process by Pt1/CoBOx comprising the binary active sites of the single-dispersed Pt and interfacial Lewis acidic B. Atomic Pt sites with large inter-distances (>nanometers) only activate hydrogen for nitrile hydrogenation, but inhibit condensation. Both adjacent B…B on CoBOx and neighbouring Pt…B pairs with close intimacy of ~0.45 nm can satisfy the spatial prerequisites for condensation. Mechanism investigations demonstrate the energetically favorable pathway occurred on adjacent Lewis acidic B sites through the nitrile adsorption (acid-base interaction), hydrogenation via hydrogen spillover from Pt to B sites and sequential condensation. Strong intermolecular tension and steric hindrance of secondary imines on active sites lead to their effective desorption and thereby a high chemoselectivity of secondary imines. Precisely controlling the spatial intimacy of multiple active sites in heterogeneous catalysts can significantly affect the selectivity and activity. Here the authors show a binary active site of single atom Pt and Lewis acidic B with spatial intimacy enables a highly selective nitrile-to-secondary imine transformation.
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38
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He M, Lehn JM. Metal Cation-Driven Dynamic Covalent Formation of Imine and Hydrazone Ligands Displaying Synergistic Co-catalysis and Auxiliary Amine Effects. Chemistry 2021; 27:7516-7524. [PMID: 33909937 DOI: 10.1002/chem.202100662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Indexed: 11/09/2022]
Abstract
Optimizing C=N bond formation and C/N component exchange has major significance in Dynamic Covalent Chemistry (DCC). Imine and hydrazone generation from their aldehyde, amine and hydrazine components showed large accelerations in presence of AgOTf or Zn(OTf)2 , up to 104 for the Zn(II)-(p-anisidine)imine complex. Zn(OTf)2 and auxiliary p-anisidine together accelerated 630 times the formation of the Zn(II)-hydrazone complex, revealing a strong synergistic effect, traced to very fast initial formation of the reactive Zn(II)-imine complex presenting a C=N bond metallo-activated towards reaction with the hydrazine component. Reactions involving more entities showed kinetically faster and thermodynamically simpler outputs due to dynamic competition within a mixture of higher complexity. Catalytic amounts of metal salts and auxiliary amine gave similar marked rate accelerations and turnover, indicating true catalysis. The synergistic effect achieved by combining metallo- and organo-catalysis points to a powerful co-catalysis strategy of bond-formation in DCC through interconnected chemical transformations.
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Affiliation(s)
- Meixia He
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000, Strasbourg, France
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39
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Miao Y, Samuelsen SV, Madsen R. Vanadium- and Chromium-Catalyzed Dehydrogenative Synthesis of Imines from Alcohols and Amines. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00123] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yulong Miao
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Simone V. Samuelsen
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Robert Madsen
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
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40
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Cui W, Wang J, Sagala, Jia M. Base-Free Oxidative Coupling of Amines and Aliphatic Alcohols to Imines over Au–Pd/ZrO2 Catalyst under Mild Conditions. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421050307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Xu Q, Feng B, Ye C, Fu Y, Chen DL, Zhang F, Zhang J, Zhu W. Atomically Dispersed Vanadium Sites Anchored on N-Doped Porous Carbon for the Efficient Oxidative Coupling of Amines to Imines. ACS APPLIED MATERIALS & INTERFACES 2021; 13:15168-15177. [PMID: 33760597 DOI: 10.1021/acsami.0c22453] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Single-atom catalysts effectively integrate the respective advantages of homogeneous and heterogeneous catalysts and are a pioneering research frontier in catalysis by virtue of their maximized utility of metal atoms and distinct atomic configuration. However, development of such catalysts is still in the early stages. Herein, atomically dispersed vanadium (V) sites that are coordinated by N atoms and inlaid within N-incorporated porous carbon networks were prepared through a top-down strategy by annealing a V-containing metal-organic framework, NH2-MIL-101(V), followed by acid etching. The resulting V-N-C-600 catalyst exhibits unexpected catalytic reactivity, selectivity, and robust stability for the direct aerobic oxidation of benzylamine to generate N-benzylidene benzylamine with molecular oxygen under mild conditions. The turnover frequency reaches 53.9 h-1, which is much superior to those achieved over the commercial V2O5 and state-of-the-art non-noble metal heterogeneous catalysts reported in the literature. Kinetic analysis reveals a low activation energy barrier (37 kJ mol-1) for the benzylamine oxidation and indicates that a carbocationic intermediate is involved in the reaction mechanism. The synergistic effect between the isolated V single-atomic sites and N-doped hierarchically porous carbon network boosts the performance of V-N-C-600. Moreover, V-N-C-600 exhibits a wide generality for the efficient synthesis of a set of symmetrical imines, unsymmetrical imines, and imine derivatives.
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Affiliation(s)
- Qionghao Xu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Binbin Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Chunlin Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Yanghe Fu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - De-Li Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Fumin Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Jiangwei Zhang
- State Key Laboratory of Catalysis & Gold Catalysis Research Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, People's Republic of China
| | - Weidong Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, People's Republic of China
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42
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Li RJ, Ling C, Lv WR, Deng W, Yao ZJ. Cyclometalated Half-Sandwich Iridium(III) Complexes: Synthesis, Structure, and Diverse Catalytic Activity in Imine Synthesis Using Air as the Oxidant. Inorg Chem 2021; 60:5153-5162. [PMID: 33761239 DOI: 10.1021/acs.inorgchem.1c00174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Four air-stable cyclometalated half-sandwich iridium complexes 1-4 with C,N-donor Schiff base ligands were prepared through C-H activation in moderate-to-good yields. These complexes have been well characterized, and their exact structure was elaborated on by single-crystal X-ray analysis. The iridium(III) complexes 1-4 showed good catalytic activity in the imine synthesis under open-flask conditions (air as the oxidant) from primary amine oxidative homocoupling, secondary amine dehydrogenation, and the cross-coupling reaction of amine and alcohol. Substituents bonded on the ligands of the iridium complexes displayed little effect on the catalytic efficiency. The stability and good catalytic efficiency of the iridium catalysts, mild reaction conditions, and substrate universality showed their potential application in industrial production.
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Affiliation(s)
- Rong-Jian Li
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Chun Ling
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Wen-Rui Lv
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Wei Deng
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Zi-Jian Yao
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China.,Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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43
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Li H, Lupp D, Das PK, Yang L, Gonçalves TP, Huang MH, El Hajoui M, Liang LC, Huang KW. Redox-Neutral Imination of Alcohol with Azide: A Sustainable Alternative to the Staudinger/Aza-Wittig Reaction. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00379] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huaifeng Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Daniel Lupp
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Pradip K. Das
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Li Yang
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Théo P. Gonçalves
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Mei-Hui Huang
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Marwa El Hajoui
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Lan-Chang Liang
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Medicinal and Applied Chemistry and School of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Kuo-Wei Huang
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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44
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Campos Y, Sola FJ, Fuentes G, Quintanilla L, Almirall A, Cruz LJ, Rodríguez-Cabello JC, Tabata Y. The Effects of Crosslinking on the Rheology and Cellular Behavior of Polymer-Based 3D-Multilayered Scaffolds for Restoring Articular Cartilage. Polymers (Basel) 2021; 13:907. [PMID: 33809430 PMCID: PMC7999668 DOI: 10.3390/polym13060907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 01/10/2023] Open
Abstract
Polymer-based tri-layered (bone, intermediate and top layers) scaffolds used for the restoration of articular cartilage were prepared and characterized in this study to emulate the concentration gradient of cartilage. The scaffolds were physically or chemically crosslinked. In order to obtain adequate scaffolds for the intended application, the impact of the type of calcium phosphate used in the bone layer, the polymer used in the intermediate layer and the interlayer crosslinking process were analyzed. The correlation among SEM micrographs, physical-chemical characterization, swelling behavior, rheological measurements and cell studies were examined. Storage moduli at 1 Hz were 0.3-1.7 kPa for physically crosslinked scaffolds, and 4-5 kPa (EDC/NHS system) and 15-20 kPa (glutaraldehyde) for chemically crosslinked scaffolds. Intrinsic viscoelasticity and poroelasticity were considered in discussing the physical mechanism dominating in different time/frequency scales. Cell evaluation showed that all samples are available as alternatives to repair and/or substitute cartilage in articular osteoarthritis.
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Affiliation(s)
- Yaima Campos
- Centro de Biomateriales, Universidad de La Habana, ave Universidad e/G y Ronda, Vedado, Plaza, La Habana CP 10400, Cuba; (Y.C.); (F.J.S.); (A.A.)
- TNI Group, Department of Radiology, LUMC, Albinusdreef 2, 2333 ZA Leiden, The Netherlands;
| | - Francisco J. Sola
- Centro de Biomateriales, Universidad de La Habana, ave Universidad e/G y Ronda, Vedado, Plaza, La Habana CP 10400, Cuba; (Y.C.); (F.J.S.); (A.A.)
| | - Gastón Fuentes
- Centro de Biomateriales, Universidad de La Habana, ave Universidad e/G y Ronda, Vedado, Plaza, La Habana CP 10400, Cuba; (Y.C.); (F.J.S.); (A.A.)
- TNI Group, Department of Radiology, LUMC, Albinusdreef 2, 2333 ZA Leiden, The Netherlands;
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan;
- Bioforge Group, Campus Miguel Delibes, CIBER-BBN, Universidad de Valladolid, Edificio LUCIA, Paseo Belén 19, 47011 Valladolid, Spain; (L.Q.); (J.C.R.-C.)
| | - Luis Quintanilla
- Bioforge Group, Campus Miguel Delibes, CIBER-BBN, Universidad de Valladolid, Edificio LUCIA, Paseo Belén 19, 47011 Valladolid, Spain; (L.Q.); (J.C.R.-C.)
| | - Amisel Almirall
- Centro de Biomateriales, Universidad de La Habana, ave Universidad e/G y Ronda, Vedado, Plaza, La Habana CP 10400, Cuba; (Y.C.); (F.J.S.); (A.A.)
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan;
| | - Luis J. Cruz
- TNI Group, Department of Radiology, LUMC, Albinusdreef 2, 2333 ZA Leiden, The Netherlands;
| | - José C. Rodríguez-Cabello
- Bioforge Group, Campus Miguel Delibes, CIBER-BBN, Universidad de Valladolid, Edificio LUCIA, Paseo Belén 19, 47011 Valladolid, Spain; (L.Q.); (J.C.R.-C.)
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan;
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45
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Yiğit M, Gök Y, Özeroğlu Çelikal Ö, Yiğit B. Ruthenium(II) Complexes with Chelating N-Heterocyclic Carbenes and a Ruthenate(II) Complex as Catalysts for the Anti-Markovnikov Hydroaminations of Styrene. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Sobhani S, Hosseini Moghadam H, Derakhshan SR, Sansano JM. Tandem imine formation via auto-hydrogen transfer from alcohols to nitro compounds catalyzed by a nanomagnetically recyclable copper catalyst under solvent-free conditions. RSC Adv 2021; 11:19121-19127. [PMID: 35478668 PMCID: PMC9033619 DOI: 10.1039/d1ra02347k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/16/2021] [Indexed: 12/17/2022] Open
Abstract
A direct imination reaction was developed by tandem reaction of alcohols and nitro compounds in the presence of Cu-isatin Schiff base-γ-Fe2O3 as a nanomagnetically recyclable catalyst under solvent-free conditions. By this method, various imines were prepared in good to high yields from one-pot reaction of various alcohols (primary aromatic and aliphatic) and nitro compounds (aromatic and aliphatic) via an auto-hydrogen transfer reaction. Use of an inexpensive and easily reusable catalyst, without requiring any additives or excess amounts of benzyl alcohol as the reaction solvent are the other advantages of this method. This catalytic system has the merits of cost effectiveness, environmental benignity, excellent recyclability and good reproducibility. A direct imination reaction was developed by tandem reaction of alcohols and nitro compounds in the presence of Cu-isatin Schiff base-γ-Fe2O3 as a nanomagnetically recyclable catalyst.![]()
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Affiliation(s)
- Sara Sobhani
- Department of Chemistry
- College of Sciences
- University of Birjand
- Birjand
- Iran
| | | | | | - José Miguel Sansano
- Departamento de Química Orgánica
- Facultad de Ciencias
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Instituto de Síntesis Orgánica (ISO)
- Universidad de Alicante
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47
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Yiğit M, Gök Y, Yiğit B, Özeroğlu Çelikal Ö. Rhodium(I) N-Heterocyclic Carbene Complexes as Catalysts for the Anti-Markovnikov Hydroaminations of Styrene. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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48
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Phasayavan W, Japa M, Pornsuwan S, Tantraviwat D, Kielar F, Golovko VB, Jungsuttiwong S, Inceesungvorn B. Oxygen-deficient bismuth molybdate nanocatalysts: Synergistic effects in boosting photocatalytic oxidative coupling of benzylamine and mechanistic insight. J Colloid Interface Sci 2021; 581:719-728. [PMID: 32814195 DOI: 10.1016/j.jcis.2020.07.140] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/27/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
Abstract
Herein, bismuth molybdate (Bi2MoO6) nanocatalysts containing oxygen vacancies (OVs) are found to considerably promote the photocatalytic performance toward oxidative coupling of benzylamine to N-benzylidenebenzylamine under visible light irradiation. The structure-activity relationship for this interesting catalyst is revealed for the first time. The oxygen-deficient Bi2MoO6 nanoplatelets (BMO-NPs) are synthesized using ethylene glycol-ethanol solvent mixture as a reaction medium in solvothermal method. A comparison with hydrothermally prepared Bi2MoO6 square-like sheets (BMO-SHs) suggests that the nanoplatelets are much smaller in size and contain higher amount of OVs. Benzylamine conversion over the BMO-NPs is ca. 4.0 times higher than that over the BMO-SHs and ca. 3.8 and ca. 34.6 times higher than that over the commercial benchmark TiO2 P25 and BiVO4 catalysts, respectively. The BMO-NPs achieve more than 80% product yield within 2 h of irradiation regardless of substituents of benzylamine derivatives. The enhanced activity of BMO-NPs is due to synergistic roles of high surface-to-volume ratio and OVs, providing enlarged active area, extended light absorption range and improved charge separation and transfer efficiency as evidenced from UV-vis DRS, BET surface area, photocurrent response, electrochemical impedance spectroscopy, and time-resolved fluorescence decay measurements. EPR-trapping and radical scavenging experiments indicate O2- as a main active species rather than 1O2 and a plausible imine formation mechanism via O2--assisted charge transfer is proposed accordingly. The work offers an alternative facile preparation method to design efficient semiconductor photocatalysts and for the first time reveals a possible benzylamine coupling mechanism over the oxygen-deficient Bi2MoO6 nanocatalyst.
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Affiliation(s)
- Witchaya Phasayavan
- Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand; Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Center of Excellence in Materials Science and Technology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Mattawan Japa
- Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand; Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Center of Excellence in Materials Science and Technology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Soraya Pornsuwan
- Department of Chemistry, Faculty of Science and Center of Excellence for Innovation in Chemistry, Mahidol University, Bangkok 10400, Thailand
| | - Doldet Tantraviwat
- Department of Electrical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Filip Kielar
- Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
| | - Vladimir B Golovko
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Siriporn Jungsuttiwong
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Burapat Inceesungvorn
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Center of Excellence in Materials Science and Technology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
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49
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Tamilthendral V, Ramesh R, Malecki JG. Arene diruthenium(II)‐mediated synthesis of imines from alcohols and amines under aerobic condition. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Veerappan Tamilthendral
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli India
| | - Rengan Ramesh
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli India
| | - Jan Grzegorz Malecki
- Department of Crystallography, Institute of Chemistry University of Silesia Katowice Poland
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50
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Abstract
Imines, versatile intermediates for organic synthesis, can be exploited for the
preparation of diverse classes of biologically active benzazoles. Because of the special
characteristics of the C=N bond, imines can be simultaneously used in the synthesis of
1,3-benzazoles and 1,2-benzazoles. With the development of imine synthesis, a variety of
novel cascade reactions for benzazole synthesis have been reported in the last decade.
Therefore, there is a strong need to elucidate the recent progress in the formation of various
classes of benzazoles, including benzimidazoles, benzoxazoles, benzothiazoles, indazoles,
and benzisoxazoles, via imines obtained by condensation reactions or oxidative/
redox coupling reactions In this review, we provide a comprehensive survey of this
area. In particular, various green and mild synthetic methodologies are summarized, and
the multiple roles of novel catalysts and significant mechanisms for several transformations are highlighted in
detail. We believe that this review will aid researchers studying the synthesis of complex molecules containing
the benzazole motif via imines.
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Affiliation(s)
- Ran An
- Key Laboratory of Structure-Based Drugs Design and Discovery (Ministry of Education), School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Mengbi Guo
- Key Laboratory of Structure-Based Drugs Design and Discovery (Ministry of Education), School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yingbo Zang
- Key Laboratory of Structure-Based Drugs Design and Discovery (Ministry of Education), School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hang Xu
- Key Laboratory of Structure-Based Drugs Design and Discovery (Ministry of Education), School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zhuang Hou
- Key Laboratory of Structure-Based Drugs Design and Discovery (Ministry of Education), School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Chun Guo
- Key Laboratory of Structure-Based Drugs Design and Discovery (Ministry of Education), School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
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