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Kumar P, Tomar V, Kumar D, Joshi RK, Nemiwal M. Magnetically active iron oxide nanoparticles for catalysis of organic transformations: A review. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132641] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Halligudra G, Paramesh CC, Mudike R, Ningegowda M, Rangappa D, Shivaramu PD. Pd II on Guanidine-Functionalized Fe 3O 4 Nanoparticles as an Efficient Heterogeneous Catalyst for Suzuki-Miyaura Cross-Coupling and Reduction of Nitroarenes in Aqueous Media. ACS OMEGA 2021; 6:34416-34428. [PMID: 34963927 PMCID: PMC8697406 DOI: 10.1021/acsomega.1c04528] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 11/26/2021] [Indexed: 05/27/2023]
Abstract
This paper presents guanidine-functionalized Fe3O4 magnetic nanoparticle-supported palladium (II) (Fe3O4@Guanidine-Pd) as an effective catalyst for Suzuki-Miyaura cross-coupling of aryl halides using phenylboronic acids and also for selective reduction of nitroarenes to their corresponding amines. Fe3O4@Guanidine-Pd synthesized is well characterized using FT-IR spectroscopy, XRD, SEM, TEM, EDX, thermal gravimetric analysis, XPS, inductively coupled plasma-optical emission spectroscopy, and vibrating sample magnetometry analysis. The prepared Fe3O4@Guanidine-Pd showed effective catalytic performance in the Suzuki-Miyaura coupling reactions by converting aryl halides to their corresponding biaryl derivatives in an aqueous environment in a shorter reaction time and with a meagerly small amount of catalyst (0.22 mol %). Also, the prepared Fe3O4@Guanidine-Pd effectively reduced nitroarenes to their corresponding amino derivatives in aqueous media at room temperature with a high turnover number and turnover frequency with the least amount of catalyst (0.13 mol %). The most prominent feature of Fe3O4@Guanidine-Pd as a catalyst is the ease of separation of the catalyst from the reaction mixture after the reaction with the help of an external magnet with good recovery yield and also reuse of the recovered catalyst for a few cycles without significant loss in its catalytic activity.
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Affiliation(s)
- Guddappa Halligudra
- Department
of Applied Sciences, Center for Postgraduate Studies, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur District 562 101, India
| | - Chitrabanu C. Paramesh
- Department
of Applied Sciences, Center for Postgraduate Studies, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur District 562 101, India
| | - Ravi Mudike
- Department
of Applied Sciences, Center for Postgraduate Studies, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur District 562 101, India
- Solar
Resource Assessment Division, National Institute
of Solar Energy, Gwal Pahari, Gurugram 122 003, Haryana, India
| | - Mallesha Ningegowda
- SRI
RAM CHEM, R & D Centre, Plot No. 31, JCK Industrial Park, Belagola Industrial Area, Mysore 570016, India
| | - Dinesh Rangappa
- Department
of Applied Sciences, Center for Postgraduate Studies, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur District 562 101, India
| | - Prasanna D. Shivaramu
- Department
of Applied Sciences, Center for Postgraduate Studies, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur District 562 101, India
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Sustainable hydration of alkynes promoted by first row transition metal complexes. Background, highlights and perspectives. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120288] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Rodrigues FMS, Carrilho RMB, Pereira MM. Reusable Catalysts for Hydroformylation‐Based Reactions. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100032] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fábio M. S. Rodrigues
- Coimbra Chemistry Centre Department of Chemistry University of Coimbra Rua Larga 3004-535 Coimbra Portugal
| | - Rui M. B. Carrilho
- Coimbra Chemistry Centre Department of Chemistry University of Coimbra Rua Larga 3004-535 Coimbra Portugal
| | - Mariette M. Pereira
- Coimbra Chemistry Centre Department of Chemistry University of Coimbra Rua Larga 3004-535 Coimbra Portugal
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Kuan TH, Hou DR. Synthesis of 2-Aryl Acetophenones via Hydrobromination and Oxy-isomerization of ( o-Arylethynyl)benzyl Alcohols. J Org Chem 2021; 86:6907-6917. [PMID: 33852296 DOI: 10.1021/acs.joc.1c00294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrobromination and oxy-isomerization of (o-arylethynyl)benzyl alcohols to yield brominated aryl ketones were achieved with bromotrimethylsilane. The substrate scope suggested that vinyl carbocations, stabilized by the conjugated aryl groups, are the reaction intermediates. 1H-Isochromene was also detected by 1H NMR, and an isolated 1H-isochromene was converted to the product when retreated with TMSBr. The formation of 1H-isochromene is equivalent to a 6-endo-dig cyclization and contrasts with the corresponding reactions under basic conditions, in which the 5-exo-dig process dominated.
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Affiliation(s)
- Tzu-Hsuan Kuan
- Department of Chemistry, National Central University, No. 300 Jhong-Da Road, Jhong-li, Taoyuan 32001, Taiwan
| | - Duen-Ren Hou
- Department of Chemistry, National Central University, No. 300 Jhong-Da Road, Jhong-li, Taoyuan 32001, Taiwan
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Tewari T, Kumar R, Chandanshive AC, Chikkali SH. Phosphorus Ligands in Hydroformylation and Hydrogenation: A Personal Account. CHEM REC 2021; 21:1182-1198. [PMID: 33734560 DOI: 10.1002/tcr.202100007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 03/05/2021] [Accepted: 03/05/2021] [Indexed: 01/10/2023]
Abstract
Metal-catalyzed hydroformylation and hydrogenation heavily rely on ligands, among which phosphorous ligands play a pivotal role. This personal account presents a selection of three distinct classes of phosphorous ligands, namely, monodentate meta-substituted phosphinites, bis-phosphites, and P-chiral supramolecular phosphines, developed in our group. The synthesis of these ligands, isolation, characterization, and their performance in transition metal-catalyzed hydroformylation, isomerizing hydroformylation, and asymmetric hydrogenation of olefins is summarized. The state of the art development in iron-catalyzed hydroformylation of alkenes and our contributions to the field is discussed. Use of phosphines enabled iron-catalyzed hydroformylation of alkenes under mild conditions. Thus, this account demonstrates the central role of phosphorus ligands in industrially relevant transformations such as hydrogenation and hydroformylation. The seemingly matured field of ligand discovery still holds significant potential and will steer the field of homogeneous catalysis.
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Affiliation(s)
- Tanuja Tewari
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr.HomiBhabha Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR) Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Rohit Kumar
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr.HomiBhabha Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR) Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Amol C Chandanshive
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr.HomiBhabha Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR) Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Samir H Chikkali
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr.HomiBhabha Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR) Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
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Kumar R, Sahoo SC, Nanda PK. A
μ
4
‐Oxo Bridged Tetranuclear Zinc Complex as an Efficient Multitask Catalyst for CO
2
Conversion. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Raman Kumar
- Department of Applied Science University Institute of Engineering and Technology Panjab University Chandigarh 160014 India
- Department of Chemistry and Center of Advance Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Subash C. Sahoo
- Department of Chemistry and Center of Advance Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Prasant K. Nanda
- Department of Applied Science University Institute of Engineering and Technology Panjab University Chandigarh 160014 India
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Sarkar A, Formenti D, Ferretti F, Kreyenschulte C, Bartling S, Junge K, Beller M, Ragaini F. Iron/N-doped graphene nano-structured catalysts for general cyclopropanation of olefins. Chem Sci 2020; 11:6217-6221. [PMID: 32953016 PMCID: PMC7480268 DOI: 10.1039/d0sc01650k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/01/2020] [Indexed: 11/22/2022] Open
Abstract
An Fe-based heterogeneous catalyst allows for the synthesis of cyclopropanes via a carbene transfer reaction, a transformation usually belonging to the homogeneous domain.
The first examples of heterogeneous Fe-catalysed cyclopropanation reactions are presented. Pyrolysis of in situ-generated iron/phenanthroline complexes in the presence of a carbonaceous material leads to specific supported nanosized iron particles, which are effective catalysts for carbene transfer reactions. Using olefins as substrates, cyclopropanes are obtained in high yields and moderate diastereoselectivities. The developed protocol is scalable and the activity of the recycled catalyst after deactivation can be effectively restored using an oxidative reactivation protocol under mild conditions.
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Affiliation(s)
- Abhijnan Sarkar
- Dipartimento di Chimica - Università degli Studi di Milano , Via C. Golgi 19 , 20133 Milano , Italy .
| | - Dario Formenti
- Leibniz-Institut für Katalyse e.V. , Albert-Einstein-Straße 29a , 18059 Rostock , Germany .
| | - Francesco Ferretti
- Dipartimento di Chimica - Università degli Studi di Milano , Via C. Golgi 19 , 20133 Milano , Italy .
| | - Carsten Kreyenschulte
- Leibniz-Institut für Katalyse e.V. , Albert-Einstein-Straße 29a , 18059 Rostock , Germany .
| | - Stephan Bartling
- Leibniz-Institut für Katalyse e.V. , Albert-Einstein-Straße 29a , 18059 Rostock , Germany .
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V. , Albert-Einstein-Straße 29a , 18059 Rostock , Germany .
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. , Albert-Einstein-Straße 29a , 18059 Rostock , Germany .
| | - Fabio Ragaini
- Dipartimento di Chimica - Università degli Studi di Milano , Via C. Golgi 19 , 20133 Milano , Italy .
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