1
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Kumar S, Maurya SK. Heterogeneous V 2O 5/TiO 2-Mediated Photocatalytic Reduction of Nitro Compounds to the Corresponding Amines under Visible Light. J Org Chem 2023. [PMID: 37367717 DOI: 10.1021/acs.joc.3c00569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
The hydrogenation of nitro compounds to their corresponding amines is developed using a heterogeneous and recyclable catalyst (V2O5/TiO2) under irradiation of blue LED (9 W) at ambient temperature. Hydrazine hydrate is used as a reductant and ethanol is used as a solvent, facilitating green, sustainable, low-cost production. The synthesis of 32 (hetero)arylamines and their pharmaceutically relevant molecules (five) are described. Significant features of the protocol include catalyst recyclability, green solvent, ambient temperature, and gram-scale reactions. Among the other aspects studied are 1H-NMR-assisted reaction progress monitoring, control experiments for mechanistic studies, protocol applications, and recyclability studies. Furthermore, the developed protocol enabled wide functional group tolerance, chemo-selectivity, high yield, and low-cost, sustainable, and environmentally benign synthesis.
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Affiliation(s)
- Shashi Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176 061, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sushil K Maurya
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176 061, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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2
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Keypour H, Kouhdareh J, Alavinia S, Karimi-Nami R, Karakaya İ. Pd-Coordinated Salinidol-Modified Mixed MOF: An Excellent Active Center for Efficient Nitroarenes Reduction and Selective Oxidation of Alcohols. ACS OMEGA 2023; 8:22138-22149. [PMID: 37360424 PMCID: PMC10285956 DOI: 10.1021/acsomega.3c02414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/26/2023] [Indexed: 06/28/2023]
Abstract
Selective oxidation of active and inactive alcohol substrates and reduction of nitroarenes is a highly versatile conversion that remains a challenge in controlling functionality and adjustments in metal-organic frameworks (MOFs). On the other hand, it offers an attractive opportunity to expand their applications in designing the next generation of catalysts with improved performance. Herein, a novel mixed MOF consisting of supported 2-hydroxybenzamide (mixed MOF-salinidol) has been fabricated by post-synthetic modifications of mixed MOF. Subsequently, the prepared nanocomposites were modified to impart catalytic sites using palladium chloride ions mixed with MOF-salinidol/Pd (II). After successfully designing and structurally characterizing nanocomposites, we evaluated their activity in oxidizing primary and secondary alcohols using aerobic conditions with molecular oxygen and an air atmosphere. In addition, the stability of (mixed MOF-salinidol/Pd (II)) catalysts under catalytic conditions was also demonstrated by comparing the Fourier-transform infrared spectrum, scanning electron microscopy image, and ICP-OES method before and after catalysis. Based on the results, the active surface area of the synthesized nanocatalyst is large, which highlights its unique synergistic effect between post-synthetic modified MOF and Pd, and furthermore, the availability of catalytic sites from Pd, as demonstrated by outstanding catalytic activity.
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Affiliation(s)
- Hassan Keypour
- Faculty
of Chemistry, Bu-Ali Sina University, Hamedan 65174, Iran
| | - Jamal Kouhdareh
- Faculty
of Chemistry, Bu-Ali Sina University, Hamedan 65174, Iran
| | - Sedigheh Alavinia
- Department
of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65174, Iran
| | - Rahman Karimi-Nami
- Department
of Chemistry, Faculty of Science, University
of Maragheh, Maragheh 55181-83111, Iran
| | - İdris Karakaya
- Department
of Chemistry, College of Basic Sciences, Gebze Technical University, Gebze 41400, Turkey
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3
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Kouhdareh J, Keypour H, Alavinia S, Maryamabadi A. Immobilization of Ag and Pd over a novel amide based covalent organic framework (COF-BASU2) as a heterogeneous reusable catalyst to reduce nitroarenes. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2022.121251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Robles-Henríquez R, Chávez-Vega T, Gallardo-Fuentes S, Lodeiro L, Lühr S, Vilches-Herrera M. Selective reduction of nitroarenes using Ru/C and CaH 2. Org Biomol Chem 2022; 21:187-194. [PMID: 36484425 DOI: 10.1039/d2ob01807a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report an efficient and highly selective method for the reduction of aromatic, heteroaromatic and halonitro compounds using the readily available and cost-effective Ru/C as a catalyst along with unconventional CaH2 as a source of hydride. In most cases the corresponding anilines can be obtained by simple filtration without further purification. The use of 2-MeTHF and the simple operational work-up constitute a valid alternative to previous methodologies.
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Affiliation(s)
- Ramiro Robles-Henríquez
- Chemistry Department, Faculty of Science, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile.
| | - Tomás Chávez-Vega
- Chemistry Department, Faculty of Science, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile.
| | - Sebastián Gallardo-Fuentes
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Avenida Universidad 330, Curauma, Valparaíso, Chile
| | - Lucas Lodeiro
- Chemistry Department, Faculty of Science, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile.
| | - Susan Lühr
- Chemistry Department, Faculty of Science, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile.
| | - Marcelo Vilches-Herrera
- Chemistry Department, Faculty of Science, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile.
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5
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Sabour F, Nemati F, Rangraz Y. Selenium and Nitrogen Co‐Doped Porous Carbon Immobilized Ag Nanoparticles: A Practical Heterogeneous Nanocatalyst for Hydrogenation of Nitroaromatics. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Bokov DO, Mahmoud MZ, Widjaja G, Suksatan W, Chupradit S, Altimari US, Hussein HA, Mustafa YF, Kazemnejadi M. Transfer hydrogenation of nitroarenes using cellulose filter paper-supported Pd/C by filtration as well as sealed methods. RSC Adv 2022; 12:10933-10949. [PMID: 35425081 PMCID: PMC8988863 DOI: 10.1039/d2ra01151d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/19/2022] [Indexed: 11/21/2022] Open
Abstract
A reductive filter paper for selective nitro reduction has been prepared by modification of a pristine cellulose filter paper by Pd/C nanoparticles, as a portable catalyst. The reaction was performed in two different set-ups including (i) filtration and (ii) sealed systems, in the presence of ammonium formate and ex situ generated hydrogen gas reducing agents, respectively. In the sealed system in the presence of H2 gas, the halogenated nitroarenes were completely reduced, while in the filtration system, different derivatives of the nitroarenes were selectively reduced to aryl amines. In both systems, the reduction of nitroarenes to aryl amines was performed with high efficiency and selectivity, comparable to a heterogeneous system. Reaction parameters were comprehensively designed using Design Expert software and then studied. The properties of the catalytic filter paper were studied in detail from the points of view of swellability, shrinkage, reusability, and stability against acidic, alkaline, and oxidative reagents.
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Affiliation(s)
- Dmitry Olegovich Bokov
- Institute of Pharmacy, Sechenov First Moscow State Medical University 8 Trubetskaya St., bldg. 2 Moscow 119991 Russian Federation
| | - Mustafa Z Mahmoud
- Department of Radiology and Medical Imaging, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
- Faculty of Health, University of Canberra Canberra ACT Australia
| | - Gunawan Widjaja
- Postgraduate Study, Universitas Krisnadwipayana Bekasi Indonesia
- Faculty of Public Health, Universitas Indonesia Depok Indonesia
| | - Wanich Suksatan
- Faculty of Nursing, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy Bangkok Thailand
| | - Supat Chupradit
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University Chiang Mai 50200 Thailand
| | | | | | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul Mosul-41001 Iraq
| | - Milad Kazemnejadi
- Department of Chemistry, College of Sciences, Shiraz University Shiraz 71946-84795 Iran
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7
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Abednatanzi S, Gohari Derakhshandeh P, Dalapati S, Veerapandian SKP, Froissart AC, Epping JD, Morent R, De Geyter N, Van Der Voort P. Metal-Free Chemoselective Reduction of Nitroarenes Catalyzed by Covalent Triazine Frameworks: The Role of Embedded Heteroatoms. ACS APPLIED MATERIALS & INTERFACES 2022; 14:15287-15297. [PMID: 35322660 DOI: 10.1021/acsami.2c01091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Chemoselective reduction of nitroarenes to arylamines is a core technology for the synthesis of numerous chemicals. The technology, however, relies on applying precious noble metal catalysts. We present our findings on the development of robust nanoporous covalent triazine frameworks (CTFs) as metal-free catalysts for the green chemoselective reduction of nitroarenes. The turnover frequency is found to be 43.03 h-1, exceeding activities of the heteroatom-doped carbon nanomaterials by a factor of 30. The X-ray photoelectron spectroscopy and control experiments provide further insights into the nature of active species for prompt catalysis. This report confirms the importance of quaternary 'N' and 'F' atom functionalities to create active hydrogen species via charge delocalization as a critical step in improving the catalytic activity.
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Affiliation(s)
- Sara Abednatanzi
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
| | - Parviz Gohari Derakhshandeh
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
| | - Sasanka Dalapati
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
- Department of Materials Science, School of Technology, Central University of Tamil Nadu (CUTN), Thiruvarur 610005, Tamil Nadu, India
| | - Savita K P Veerapandian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Anne-Claire Froissart
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
| | - Jan Dirk Epping
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Pascal Van Der Voort
- Center for Ordered Materials, Organometallics and Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium
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8
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Preparation of COFs Supported Pd as an Efficient Catalyst for the Hydrogenation of Aromatic Nitro. Catal Letters 2022. [DOI: 10.1007/s10562-022-03941-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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9
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Rafiee F, Rezaee M. Catalytic reduction of nitroarenes and degradation of dyes at room temperature by an efficient NNN pincer palladium catalyst based on the magnetic amino-triazole-modified chitosan. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Mushtaq I, Akhter Z, Farooq M, Jabeen F, Rehman AU, Rehman S, Ayub S, Mirza B, Siddiq M, Zaman F. A unique amphiphilic triblock copolymer, nontoxic to human blood and potential supramolecular drug delivery system for dexamethasone. Sci Rep 2021; 11:21507. [PMID: 34728694 PMCID: PMC8563740 DOI: 10.1038/s41598-021-00871-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 10/19/2021] [Indexed: 01/02/2023] Open
Abstract
The drug delivery system (DDS) often causes toxicity, triggering undesired cellular injuries. Thus, developing supramolecules used as DDS with tunable self-assembly and nontoxic behavior is highly desired. To address this, we aimed to develop a tunable amphiphilic ABA-type triblock copolymer that is nontoxic to human blood cells but also capable of self-assembling, binding and releasing the clinically used drug dexamethasone. We synthesized an ABA-type amphiphilic triblock copolymer (P2L) by incorporating tetra(aniline) TANI as a hydrophobic and redox active segment along with monomethoxy end-capped polyethylene glycol (mPEG2k; Mw = 2000 g mol-1) as biocompatible, flexible and hydrophilic part. Cell cytotoxicity was measured in whole human blood in vitro and lung cancer cells. Polymer-drug interactions were investigated by UV-Vis spectroscopy and computational analysis. Our synthesized copolymer P2L exhibited tuned self-assembly behavior with and without external stimuli and showed no toxicity in human blood samples. Computational analysis showed that P2L can encapsulate the clinically used drug dexamethasone and that drug uptake or release can also be triggered under oxidation or low pH conditions. In conclusion, copolymer P2L is nontoxic to human blood cells with the potential to carry and release anticancer/anti-inflammatory drug dexamethasone. These findings may open up further investigations into implantable drug delivery systems/devices with precise drug administration and controlled release at specific locations.
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Affiliation(s)
- Irrum Mushtaq
- Department of Chemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Zareen Akhter
- Department of Chemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Farooq
- Department of Chemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Farukh Jabeen
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada
| | - Ashfaq Ur Rehman
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China
| | - Sadia Rehman
- Institute of Biomedical and Genetic Engineering, Islamabad, Pakistan
| | - Sidra Ayub
- Department of Biochemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Bushra Mirza
- Department of Biochemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Siddiq
- Department of Chemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Farasat Zaman
- Department of Women's and Children's Health, Karolinska Institutet and Pediatric Endocrinology Unit, Karolinska University Hospital, Bioclinicum J9:30, SE-171 74, Solna, Sweden.
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11
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Murtaza A, Afzal S, Zaman G, Saeed A, Pelletier J, Sévigny J, Iqbal J, Hassan A. Divergent synthesis and elaboration of structure activity relationship for quinoline derivatives as highly selective NTPDase inhibitor. Bioorg Chem 2021; 115:105240. [PMID: 34416508 DOI: 10.1016/j.bioorg.2021.105240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/25/2021] [Accepted: 08/02/2021] [Indexed: 01/11/2023]
Abstract
Quinoline derivatives have interesting biological profile. In continuation for the comprehensive evaluations of substituted quinoline derivatives against human nucleoside triphosphate diphosphohydrolases (h-NTPDases) a series of substituted quinoline derivatives (2a-g, 3a-f, 4, 5a-c, 6) was synthesized. The inhibitory activities of the synthesized compounds were evaluated against four isoenzymes of human nucleoside triphosphate diphosphohydrolases (h-NTPDases). These quinoline derivatives had IC50 (µM) values in the range of 0.20-1.75, 0.77-2.20, 0.36-5.50 and 0.90-1.82 for NTPDase1, NTPDase2, NTPDase3 and NTPDase8, respectively. The derivative 3f was the most active compound against NTPDase1 (IC50, 0.20 ± 0.02 µM) that also possessed selectivity towards NTPDase1. Similarly, derivative 3b (IC50, 0.77 ± 0.06), 2h (IC50, 0.36 ± 0.01) and 2c (IC50, 0.90 ± 0.08) displayed excellent activity corresponding to NTPDase2, NTPDase3 and NTPdase8. The compound 5c emerged as a selective inhibitor of NTPDase8. The most active compounds were then investigated to determine their mode of inhibition and finally binding interactions of the active compounds were analyzed through molecular docking studies. The obtained results strongly support the quinoline scaffold's potential as potent and selective NTPDase inhibitor.
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Affiliation(s)
- Amna Murtaza
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Saira Afzal
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Gohar Zaman
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Julie Pelletier
- Centre de recherche du CHU de Québec - Université Laval, Québec City, QC, Canada
| | - Jean Sévigny
- Centre de recherche du CHU de Québec - Université Laval, Québec City, QC, Canada; Département de Microbiologie-Infectiologie et d'Immunologie, Faculté de Médecine, Université Laval, Québec City, QC, Canada
| | - Jamshed Iqbal
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan.
| | - Abbas Hassan
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
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12
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Abstract
A growing theme in chemistry is the joining of multiple organic molecular building blocks to create functional molecules. Diverse derivatizable structures—here termed “scaffolds” comprised of “hubs”—provide the foundation for systematic covalent organization of a rich variety of building blocks. This review encompasses 30 tri- or tetra-armed molecular hubs (e.g., triazine, lysine, arenes, dyes) that are used directly or in combination to give linear, cyclic, or branched scaffolds. Each scaffold is categorized by graph theory into one of 31 trees to express the molecular connectivity and overall architecture. Rational chemistry with exacting numbers of derivatizable sites is emphasized. The incorporation of water-solubilization motifs, robust or self-immolative linkers, enzymatically cleavable groups and functional appendages affords immense (and often late-stage) diversification of the scaffolds. Altogether, 107 target molecules are reviewed along with 19 syntheses to illustrate the distinctive chemistries for creating and derivatizing scaffolds. The review covers the history of the field up through 2020, briefly touching on statistically derivatized carriers employed in immunology as counterpoints to the rationally assembled and derivatized scaffolds here, although most citations are from the past two decades. The scaffolds are used widely in fields ranging from pure chemistry to artificial photosynthesis and biomedical sciences.
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13
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Magnetically‐recoverable Schiff base complex of Pd(II) immobilized on Fe3O4@SiO2 nanoparticles: an efficient catalyst for the reduction of aromatic nitro compounds to aniline derivatives. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02787-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Ji Z, Ji Y, Ding R, Lin L, Li B, Zhang X. DNA-templated silver nanoclusters as an efficient catalyst for reduction of nitrobenzene derivatives: a systematic study. NANOTECHNOLOGY 2021; 32:195705. [PMID: 33545692 DOI: 10.1088/1361-6528/abe3b4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nitrobenzene compounds are highly toxic pollutants with good stability, and they have a major negative impact on both human health and the ecological environment. Herein, it was found for the first time that fluorescent DNA-silver nanoclusters (DNA-AgNCs) can catalyze the reduction of toxic and harmful nitro compounds into less toxic amino compounds with excellent tolerance to high temperature and organic solvents. In this study, the reduction of p-nitrophenol (4-NP) as a model was systematically investigated, followed by expending the substrate to disclose the versatility of this reaction. This report not only expanded the conditions for utilizing catalytic reduction conditions of DNA-AgNCs as an efficient catalyst in the control of hazardous chemicals but also widened the substrate range of DNA-AgNCs reduction, providing a new angle for the application of noble metal nanoclusters.
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Affiliation(s)
- Zhirun Ji
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Wenyuan Road 1, Nanjing 210023, People's Republic of China
| | - Yuan Ji
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Wenyuan Road 1, Nanjing 210023, People's Republic of China
| | - Rui Ding
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Wenyuan Road 1, Nanjing 210023, People's Republic of China
| | - Lei Lin
- School of Environment, Nanjing Normal University, Wenyuan Road 1, Nanjing 210023, People's Republic of China
| | - Bingzhi Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Wenyuan Road 1, Nanjing 210023, People's Republic of China
| | - Xing Zhang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Wenyuan Road 1, Nanjing 210023, People's Republic of China
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15
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Effects of Surface Oxygen-Containing Groups of the Flowerlike Carbon Nanosheets on Palladium Dispersion, Catalytic Activity and Stability in Hydrogenolytic Debenzylation of Tetraacetyldibenzylhexaazaisowurtzitane. Catalysts 2021. [DOI: 10.3390/catal11040441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The influence of the surface chemical properties of the carbon support on the Pd dispersion, activity and stability of Pd(OH)2/C catalyst for the hydrogenolytic debenzylation of tetraacetyldibenzylhexaazaisowurtzitane (TADB) was studied in detail. The flowerlike nanosheet carbon material (NSC) was chosen as the pristine support, meanwhile chemical oxidation with nitric acid and physical calcination at 600 °C treatments were used to modify its surface properties, which were denoted as NSCox-2 (treated with 20 wt% HNO3) and NSC-600, respectively. The three carbon supports and the corresponding catalysts of Pd/NSC, Pd/NSC-600, and Pd/NSCox-2 were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), nitrogen sorption isotherm measurement (BET), powder X-ray diffraction (XRD), Raman spectra, X-ray photoelectron spectra (XPS), temperature-programmed desorption (TPD), temperature-programmed reduction (H2-TPR), thermogravimetric analysis (TG), and element analysis. The debenzylation activities of Pd/NSC, Pd/NSC-600, and Pd/NSCox-2, as well as the three catalysts after pre-reduction treatment were also evaluated. It was found that the activity and stability of the Pd(OH)2/C catalysts in the debenzylation reaction highly depended on the content of surface oxygen-containing groups of the carbon support.
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16
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Sadeghi S, Karimi M, Radfar I, Gavinehroudi RG, Saberi D, Heydari A. Efficient strategy for interchangeable roles in a green and sustainable redox catalytic system: IL/Pd II-decorated SBA-15 as a mesoporous nanocatalyst. NEW J CHEM 2021. [DOI: 10.1039/d0nj05459c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Green synthesis of catalyst for the aerobic oxidation of alcohols using air as a green oxidant, and efficient and straightforward synthesis method for amine formation using formic acid as a green reductant.
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Affiliation(s)
| | | | - Iman Radfar
- Chemistry Department
- Tarbiat Modare University
- Tehran
- Iran
| | | | - Dariush Saberi
- Department of Chemistry, Faculty of Nano and Bio Science and Technology, Persian Gulf University
- Bushehr 75169
- Iran
| | - Akbar Heydari
- Chemistry Department
- Tarbiat Modare University
- Tehran
- Iran
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17
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Goyal V, Sarki N, Natte K, Ray A. Pd/C-catalyzed transfer hydrogenation of aromatic nitro compounds using methanol as a hydrogen source. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Sprague DJ, Johnston JN. Substituted Imidazoline Synthesis: A Diastereo- and Enantioselective aza-Henry Route to a Human Proteasome Modulator. Org Lett 2020; 22:8496-8499. [PMID: 33054232 DOI: 10.1021/acs.orglett.0c03096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first enantio- and diastereoselective synthesis of Tepe's human proteasome modulator is described. Routes to this and other highly substituted chiral imidazolines generally produce racemic material. Key to the route disclosed here is a gram-scale anti-selective aza-Henry reaction of an α-alkyl α-nitro ester nucleophile, catalyzed by a Bis(Amidine) [BAM] chiral proton complex, delivering the key intermediate in high yield as a single stereoisomer. The adduct is reduced to the amino ester and converted to an imidazoline.
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Affiliation(s)
- Daniel J Sprague
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Jeffrey N Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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19
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Gao K, Wan Y, Shang Q, Cheng Q, Pan Z, Zhou H. Synthesis, characterization and photocatalytic properties of a Mn(II)-MOFs based on 2,2′-biisonicotinic acid. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Emadi F, Nemati F, Elhampour A. Silver Nanoparticles Supported on Mesoporous Triazine Carbon Material: A Versatile Catalyst for Reduction of Nitroaromatic Compounds. ChemistrySelect 2020. [DOI: 10.1002/slct.202000645] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Ali Elhampour
- Department of ChemistrySemnan University, Semnan Iran
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Mushtaq I, Mushtaq I, Akhter Z, Murtaza I, Qamar S, Ayub S, Mirza B, Butt TM, Janjua NK, Shah FU, Zaman F. Engineering electroactive and biocompatible tetra(aniline)-based terpolymers with tunable intrinsic antioxidant properties in vivo. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110456. [DOI: 10.1016/j.msec.2019.110456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 10/28/2019] [Accepted: 11/16/2019] [Indexed: 12/27/2022]
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Recyclable Pd/C catalyzed one-step reduction of carbonyls to hydrocarbons under simple conditions without extra base. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151447] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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