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Duan D, Qiu H, Tang M, Song R, Si W, Yang D, Lv J. HfCl 4-Catalyzed [4 + 2] Cycloaddition of β,γ-Unsaturated α-Keto Esters with Alkynes. J Org Chem 2022; 87:5188-5198. [PMID: 35352946 DOI: 10.1021/acs.joc.2c00007] [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 Lewis acid HfCl4-catalyzed [4 + 2] cycloaddition between β,γ-unsaturated α-keto esters and various symmetric or unsymmetric alkynes, giving the desired polysubstituted 4H-pyrans in up to 98% yield and with excellent regioselectivity (>99:1) via a vinyl carbocation under mild conditions.
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Affiliation(s)
- Depeng Duan
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Huixin Qiu
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Mengdie Tang
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Ran Song
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Wen Si
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Daoshan Yang
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Jian Lv
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
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2
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Baudillon M, Cauchy T, Vanthuyne N, Avarvari N, Pop F. Configurationally stable dithia[7]helicene and dithia-quasi[8]circulene fused dithiolones. Org Chem Front 2022. [DOI: 10.1039/d2qo00921h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stereochemically stable dithia[7]helicene and dithia-quasi[8]circulene decorated with 1,3-dithiol-2-one motifs were synthesized by simple and double oxidative dehydrocyclisation.
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Affiliation(s)
- Maxime Baudillon
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
| | - Thomas Cauchy
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
| | - Nicolas Vanthuyne
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
| | - Flavia Pop
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
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3
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Zozik Y, Sevim M, Lafzi F, Kilic H, Metin Ö. Magnetically recoverable nickel-palladium alloy nanocatalysts for direct C-H arylation reactions. Dalton Trans 2021; 50:17515-17523. [PMID: 34762086 DOI: 10.1039/d1dt02985a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel magnetically recoverable nanocatalyst comprising nickel-palladium (NiPd) alloy nanoparticles (NPs) supported on reduced graphene oxide (rGO) modified with cobalt ferrite (CoFe2O4) NPs was fabricated for the direct C-H arylation of imidazopyridine, imidazole, indolizine and furan with aryl halides. To prepare the presented catalyst, rGO nanosheets were first modified with as-synthesized CoFe2O4 NPs and then the obtained CoFe2O4-rGO nanocomposites served as a support material for the synthesis of bimetallic NiPd alloy NPs at various compositions. The obtained CoFe2O4-rGO/NiPd nanocatalysts were characterized by many advanced analytical techniques including TEM, STEM-EDS, XRD, XPS, and ICP-MS. Next, to optimize the reaction conditions, CoFe2O4-rGO/NiPd nanocatalysts with different alloy compositions and their monometallic counterparts (CoFe2O4-rGO/Ni and CoFe2O4-rGO/Pd) were initially tested in the direct C-H arylation of imidazopyridine with bromobenzene. Among all tested nanocatalysts under the optimum reaction conditions, CoFe2O4-rGO/Ni20Pd80 showed the best catalytic activity in terms of the isolated product yields. The C-H arylation reactions were studied over a broad substrate scope (35 examples from 36 substrates) and gave the related biaryl products in good to excellent yields. Besides a broad substrate scope, the late-stage C-H arylation of zolimidine, a gastroprotective drug, was realized under the optimized reaction conditions. Moreover, the CoFe2O4-rGO/Ni20Pd80 nanocatalysts were recovered from the reaction medium using a simple magnet and reused in the C-H arylation reactions up to five consecutive runs without a significant drop in the product yield. This study shows that magnetically recoverable Pd nanoalloys are promising heterogeneous catalysts to be used in sustainable C-H functionalization reactions.
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Affiliation(s)
- Yunus Zozik
- Department of Chemistry, Faculty of Science, Atatürk University, 25240, Erzurum, Turkey. .,Oltu Vocational Training School, 25400, Oltu, Erzurum, Turkey
| | - Melike Sevim
- Department of Chemistry, Faculty of Science, Atatürk University, 25240, Erzurum, Turkey. .,Department of Nanoscience and Nanoengineering, Atatürk University, 25240, Erzurum, Turkey
| | - Ferruh Lafzi
- Department of Chemistry, Faculty of Science, Atatürk University, 25240, Erzurum, Turkey.
| | - Haydar Kilic
- Department of Chemistry, Faculty of Science, Atatürk University, 25240, Erzurum, Turkey. .,Oltu Vocational Training School, 25400, Oltu, Erzurum, Turkey
| | - Önder Metin
- Department of Chemistry, College of Sciences, Koç University, 34450, Sarıyer, İstanbul, Turkey.
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Baroliya PK, Chopra J, Pal T, Maiti S, Al‐Thabaiti SA, Mokhtar M, Maiti D. Supported Metal Nanoparticles Assisted Catalysis: A Broad Concept in Functionalization of Ubiquitous C−H Bonds. ChemCatChem 2021. [DOI: 10.1002/cctc.202100755] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Prabhat Kumar Baroliya
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
- Department of Chemistry Mohanlal Sukhadia University Udaipur 313001 India
| | - Jaishri Chopra
- Department of Chemistry Mohanlal Sukhadia University Udaipur 313001 India
| | - Tanay Pal
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Siddhartha Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
- VIT Bhopal University Bhopal-Indore Highway, Kothrikalan Sehore Madhya Pradesh 466114 India
| | | | - Mohamed Mokhtar
- Department of Chemistry Faculty of Sciences King Abdulaziz University Jeddah 21589 Saudi Arabia
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
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5
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Shiri P, Amani AM, Mayer-Gall T. A recent overview on the synthesis of 1,4,5-trisubstituted 1,2,3-triazoles. Beilstein J Org Chem 2021; 17:1600-1628. [PMID: 34354770 PMCID: PMC8290111 DOI: 10.3762/bjoc.17.114] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/29/2021] [Indexed: 12/20/2022] Open
Abstract
Diverse strategies for the efficient and attractive synthesis of a wide variety of relevant 1,4,5-trisubstituted 1,2,3-triazole molecules are reported. The synthesis of this category of diverse fully functionalized 1,2,3-triazoles has become a necessary and unique research subject in modern synthetic organic key transformations in academia, pharmacy, and industry. The current review aims to cover a wide literature survey of numerous synthetic strategies. Recent reports (2017–2021) in the field of 1,4,5-trisubstituted 1,2,3-triazoles are emphasized in this current review.
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Affiliation(s)
- Pezhman Shiri
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Mohammad Amani
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Thomas Mayer-Gall
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany.,Deutsches Textilforschungszentrum Nord-West gGmbH, Adlerstr. 1, 47798 Krefeld, Germany
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6
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Gholinejad M, Khosravi F, Afrasi M, Sansano JM, Nájera C. Applications of bimetallic PdCu catalysts. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02339f] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bimetallic PdCu nanoparticles can be applied as catalysts in a wide range of chemical and electrochemical reactions.
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Affiliation(s)
- Mohammad Gholinejad
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
- Research Center for Basic Sciences & Modern Technologies (RBST)
| | - Faezeh Khosravi
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - Mahmoud Afrasi
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - José M. Sansano
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica
| | - Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
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7
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Pinto J, Barroso-Solares S, Magrì D, Palazon F, Lauciello S, Athanassiou A, Fragouli D. Melamine Foams Decorated with In-Situ Synthesized Gold and Palladium Nanoparticles. Polymers (Basel) 2020; 12:polym12040934. [PMID: 32316645 PMCID: PMC7240623 DOI: 10.3390/polym12040934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 01/10/2023] Open
Abstract
A versatile and straightforward route to produce polymer foams with functional surface through their decoration with gold and palladium nanoparticles is proposed. Melamine foams, used as polymeric porous substrates, are first covered with a uniform coating of polydimethylsiloxane, thin enough to assure the preservation of their original porous structure. The polydimethylsiloxane layer allows the facile in-situ formation of metallic Au and Pd nanoparticles with sizes of tens of nanometers directly on the surface of the struts of the foam by the direct immersion of the foams into gold or palladium precursor solutions. The effect of the gold and palladium precursor concentration, as well as the reaction time with the foams, to the amount and sizes of the nanoparticles synthesized on the foams, was studied and the ideal conditions for an optimized functionalization were defined. Gold and palladium contents of about 1 wt.% were achieved, while the nanoparticles were proven to be stably adhered to the foam, avoiding potential risks related to their accidental release.
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Affiliation(s)
- Javier Pinto
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
- Correspondence: (J.P.); (D.F.)
| | - Suset Barroso-Solares
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
| | - Davide Magrì
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
| | - Francisco Palazon
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy;
- Instituto de Ciencia Molecular, Universidad de Valencia, C/Beltrán 2, 46980 Paterna, Spain
| | - Simone Lauciello
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
| | - Athanassia Athanassiou
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
| | - Despina Fragouli
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
- Correspondence: (J.P.); (D.F.)
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