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Sagar S, Nath P, Kisan DA, Karmakar H, Ray A, Sarkar A, Panda TK. Unprecedented ROP of quinazolinones to polyacylamidines using a cesium catalyst. Chem Commun (Camb) 2024. [PMID: 38699830 DOI: 10.1039/d4cc00491d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Unprecedented ring-opening polymerization of quinazolinones to produce novel polyacylamidines, led by a unique cooperation between a cesium metal center and imino-phosphanamidinate ligand, was developed. Morphological studies revealed the formation of a unique macromolecular assembly producing nanofibers in the absence of a templating agent with excellent control of molecular weights and polydispersity index.
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Affiliation(s)
- Shweta Sagar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Priyanku Nath
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Devadkar Ajitrao Kisan
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Aranya Ray
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd, Survey No. 09, Hosur Road, Electronic City (west), Bangalore-560100, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, 502 284, Sangareddy, Telangana, India.
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2
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Kumar R, Meher RK, Karmakar H, Panda TK. Hydrosilylation of nitriles and tertiary amides using a zinc precursor. Org Biomol Chem 2024; 22:3053-3058. [PMID: 38545870 DOI: 10.1039/d4ob00161c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
We report a competent and selective hydrosilylation of nitriles and tertiary amides catalyzed by the readily available zinc bis(hexamethyldisilazide) under solvent-free and mild conditions, making it a sustainable and desirable alternative to existing methods. Both protocols afforded high conversion, superior selectivity, and a broad substrate scope, from electron-withdrawing to electron-donating and heterocyclic substitutions.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Rohan Kumar Meher
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
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3
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Sagar S, Pebam M, Sinha R, Rengan AK, Panda TK. Magnesium-Catalyzed Dye-Embedded Polylactide Nanoparticles for the Effective Killing of Highly Metastatic B16F10 Melanoma Cells. ACS Omega 2024; 9:14860-14866. [PMID: 38585097 PMCID: PMC10993387 DOI: 10.1021/acsomega.3c07898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 02/12/2024] [Accepted: 03/12/2024] [Indexed: 04/09/2024]
Abstract
In the current research, dye-embedded polylactic acid (PLA) conjugate materials were synthesized using one-pot ring-opening polymerization (ROP), i.e., (dtHPLA) (2-[(2,4,6-trimethylphenyl) imino]-1(2H)-acenaphthylenone-reduced-PLA) and (dmHPLA) (monoiminoacenaphtheneone-reduced-PLA), and then, nanoparticles (NPs) were engineered in the size range of 150 ± 30 nm. P(dtHPLA) NPs were employed in the treatment of melanoma, an aggressive type of skin cancer, which mandates the development of novel techniques to enhance healing outcomes and eliminate adverse effects related to existing treatments. In addition to exhibiting strong intracellular absorption in the spheroid model, the P(dtHPLA) NPs exhibited a strong cytotoxic effect on B16F10 cells, which resulted in oxidative stress from the generation of reactive oxygen species (ROS) and cell death. Additionally, a live/dead experiment using P(dtHPLA) NPs revealed a notable reduction in cell viability.
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Affiliation(s)
- Shweta Sagar
- Department
of Chemistry, Indian Institute of Technology
Hyderabad, Kandi 502284, Sangareddy, Telangana, India
| | - Monika Pebam
- Department
of Biomedical Engineering, Indian Institute
of Technology Hyderabad, Kandi 502284, Sangareddy, Telangana, India
| | - Rituparna Sinha
- Department
of Chemistry, Indian Institute of Technology
Hyderabad, Kandi 502284, Sangareddy, Telangana, India
| | - Aravind K. Rengan
- Department
of Biomedical Engineering, Indian Institute
of Technology Hyderabad, Kandi 502284, Sangareddy, Telangana, India
| | - Tarun K. Panda
- Department
of Chemistry, Indian Institute of Technology
Hyderabad, Kandi 502284, Sangareddy, Telangana, India
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4
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Jain A, Karmakar H, Roesky PW, Panda TK. Role of Bis(phosphinimino)methanides as Universal Ligands in the Coordination Sphere of Metals across the Periodic Table. Chem Rev 2023. [PMID: 38048165 DOI: 10.1021/acs.chemrev.3c00336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
The coordination chemistry of bis(phosphinimino)methanide ligands is widespread and accompanies a large number of metal ions in the periodic table ranging from lithium to neptunium. This unique class of ligand systems show copious coordination chemistry with the main-group, transition, rare-earth, and actinide metals and are considered to be among the most attractive ligand systems to researchers. The bis(phosphinimino)methanide metal complexes offer an extensive range of applications in various fields and have been demonstrated as one of the universal ligand systems to stabilize the metal ions in not only their usual but also their unusual oxidation states. The main-group and transition metal chemistry using bis(phosphinimino)methanides as ligands was last updated almost a decade ago. In this review, we provide a comprehensive overview of various state-of-the-art bis(phosphinimino)methanide-supported metal complexes by dealing with their synthesis, characterization, reactivity, and catalytic studies which were not included in the last critical reviews.
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Affiliation(s)
- Archana Jain
- Department of Physics and Chemistry, Mahatma Gandhi Institute of Technology (MGIT), Gandipet-500075, Hyderabad, Telangana, India
| | - Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502284, Sangareddy, Telangana, India
| | - Peter W Roesky
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15 Geb. 30.45, 76131 Karlsruhe, Germany
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502284, Sangareddy, Telangana, India
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5
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Kumar R, Meher RK, Sharma J, Sau A, Panda TK. Amidophosphine Boranes as Hydroboration Reagents for Nitriles, Alkynes, and Carboxylic Acids. Org Lett 2023; 25:7923-7927. [PMID: 37883234 DOI: 10.1021/acs.orglett.3c03194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
We report here the hydroboration of nitriles, alkynes, and carboxylic acids using amidophosphine boranes {(BH3)(PPh2)-NC(CH3)3}, {(BH3)2(PPh)2N(CH2)C6H5}, and {(BH3)2(PPh2)2N-(BH3)CH2C6H4N} as reducing agents. These compounds were synthesized to replace more commonly used borane reagents. Solid amidophosphine boranes, which were synthesized with ease, demonstrated excellent reactivity and functional group tolerance toward a wide variety of nitriles, alkynes, and carboxylic acids, affording the corresponding ammonium salts, alkenes, and alcohols in good yield.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502 284, Sangareddy, Telangana, India
| | - Rohan Kumar Meher
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502 284, Sangareddy, Telangana, India
| | - Jyoti Sharma
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502 284, Sangareddy, Telangana, India
| | - Abhijit Sau
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502 284, Sangareddy, Telangana, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502 284, Sangareddy, Telangana, India
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6
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Kumar GS, Kumar R, Sau A, Chandrasekhar V, Panda TK. Zinc Catalyzed Hydroboration of Esters and Nitriles with Pinacolborane. J Org Chem 2023; 88:12613-12622. [PMID: 37615400 DOI: 10.1021/acs.joc.3c01306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
We developed a bench-stable iminopyridine-ligated zinc complex for the effective catalytic hydroboration of esters and nitriles under solvent-free conditions. Various esters and nitriles bearing different functionalities were selectively reduced to form corresponding alcohols and amines in good yields. Detailed Hammett plots are provided to explain the electronic effects on the phenyl ring.
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Affiliation(s)
- Gobbilla Sai Kumar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Hyderabad, Telangana 502284, India
| | - Ravi Kumar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Hyderabad, Telangana 502284, India
| | - Abhijit Sau
- Department of Chemistry, Indian Institute of Technology Hyderabad, Hyderabad, Telangana 502284, India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500107, India
- Department of Chemistry, IIT Kanpur, Kanpur 208016, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Hyderabad, Telangana 502284, India
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7
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Sagar S, Karmakar H, Nath P, Sarkar A, Chandrasekhar V, Panda TK. Highly efficient and well-controlled ROP and copolymerization of cyclic esters using a cesium complex. Chem Commun (Camb) 2023. [PMID: 37351867 DOI: 10.1039/d3cc01343j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
A cesium imino-phosphanamidinate, [{NHIDippP(Ph)NDipp}Cs], enabling efficient ring-opening (co)polymerization of rac-LA and ε-CL is disclosed. Owing to the highly controlled polymerization, precise di-block copolymers (PLA-b-PCL) with different block lengths can be produced by a simple one-pot reaction. NMR, GPC, DSC and microscopic analyses confirm the production of di-block copolymers with crystalline properties.
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Affiliation(s)
- Shweta Sagar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Priyanku Nath
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd., Survey No. 09, Hosur Road, Electronic City (west), Bangalore-560100, India.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, 500107, Hyderabad, India.
- Department of Chemistry, IIT Kanpur, Kanpur 208016, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
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8
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Harinath A, Karmakar H, Kisan DA, Nayek HP, Panda TK. Correction: NHC-Zn alkyl catalyzed cross-dehydrocoupling of amines and silanes. Org Biomol Chem 2023; 21:4319. [PMID: 37183769 DOI: 10.1039/d3ob90074f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Correction for 'NHC-Zn alkyl catalyzed cross-dehydrocoupling of amines and silanes' by Adimulam Harinath et al., Org. Biomol. Chem., 2023, https://doi.org/10.1039/d3ob00453h.
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Affiliation(s)
- Adimulam Harinath
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Devadkar Ajitaro Kisan
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Hari Pada Nayek
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Dhanbad 826004, Jharkhand, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
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9
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Harinath A, Karmakar H, Kisan DA, Nayek HP, Panda TK. NHC-Zn alkyl catalyzed cross-dehydrocoupling of amines and silanes. Org Biomol Chem 2023; 21:4237-4244. [PMID: 37139558 DOI: 10.1039/d3ob00453h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
An N-heterocyclic carbene-zinc alkyl complex [ImDippZn(CH2CH3)2] (Im = imidazol-2-ylidene and Dipp = 2,6-diisopropylphenyl) acts as a catalyst in the cross-dehydrogenative coupling (CDC) of a wide range of primary and secondary amines and hydrosilanes to yield a substantial quantity of the corresponding aminosilanes with good chemoselectivity at room temperature. A broad substrate scope was observed during the zinc-catalyzed CDC reaction. Two zinc complexes, [{ImMesZn(μ-NHPh)(NHPh)}2] (Mes = mesityl) (3) and [{ImDippZn(CH2CH3)(μ-H)}2] (4), were isolated and structurally characterized as intermediates through controlled reactions to ascertain the CDC mechanism.
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Affiliation(s)
- Adimulam Harinath
- Department of Chemistry and Chemical Biology, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Himadri Karmakar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Devadkar Ajitaro Kisan
- Department of Chemistry and Chemical Biology, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
| | - Hari Pada Nayek
- Department of Applied Chemistry. Indian Institute of Technology (ISM) Dhanbad, Dhanbad 826004, Jharkhand, India
| | - Tarun K Panda
- Department of Chemistry and Chemical Biology, Indian Institute of Technology Hyderabad, Kandi - 502 284, Sangareddy, Telangana, India.
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10
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Devarajan K, Sivakalai M, Basu SM, Biswas C, Chauhan M, Hasan U, Panneerselvam Y, Narayanan UM, Raavi SSK, Giri J, Panda TK. Design and synthesis of photostable triphenylamine based neutral AIE nano luminogens: specific and long-term tracking of mitochondria in cells. Biomater Sci 2023; 11:3938-3951. [PMID: 37093244 DOI: 10.1039/d3bm00043e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
With the increasing dependence on fluorescence bioimaging, luminogens with aggregation-induced emission (AIE) properties have gained significant attention due to their excellent photostabilization, minimal photobleaching, high reliability, and superior biocompatibility. Since mitochondria are crucial subcellular organelles in eukaryotic cells with important biological functions, organelle-specific AIE emitters with distinct functions have been highly sought after, but with limited success using simple synthetic methods. Here, we describe a strategy for synthesizing two triphenylamine (TPA) based acrylonitriles, tethered to different donor groups, TPA and phenothiazine (PTZ), respectively, with superior AIE properties using Suzuki coupling. We conducted a systematic and detailed experimental analysis of the structural characteristics of both AIE luminogens, which exhibited excellent photostability, a large Stokes shift, and bright solid-state emission. A cell viability study carried out with F1 and F2 dyes revealed that both luminogens exhibited excellent biocompatibility. Based on fluorescence experiments, F2 displayed excellent AIE characteristics, permeability, biocompatibility, and photostability compared to rhodamine 123, allowing it to selectively stain and track mitochondria in cancer cells over an extended period of time. The Pearson correlation coefficient of F2 and rhodamine 123 was estimated to have an r-value of 0.99. Our findings are expected to provide insight into the synthesis of an extensive archive of AIE-based acrylonitriles with fascinating properties for mitochondrial staining.
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Affiliation(s)
| | - Mayakrishnan Sivakalai
- Organic & Bioorganic Chemistry Laboratory, CSIR-Central Leather Research Institute, Chennai, 600020, India.
- CSIR-North East Institute of Science & Technology (NEIST), Branch Laboratory, Imphal-795004, Manipur, India
| | - Suparna Mercy Basu
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Telangana, India.
| | - Chinmoy Biswas
- Department of Physics, Indian Institute of Technology Hyderabad, 502 285, India.
| | - Meenakshi Chauhan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Telangana, India.
| | - Uzma Hasan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Telangana, India.
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Telangana, India
| | - Yuvaraj Panneerselvam
- CSIR-North East Institute of Science & Technology (NEIST), Branch Laboratory, Imphal-795004, Manipur, India
| | - Uma Maheswari Narayanan
- Organic & Bioorganic Chemistry Laboratory, CSIR-Central Leather Research Institute, Chennai, 600020, India.
| | | | - Jyotsnendu Giri
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Telangana, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, 502285, India.
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11
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Karmakar H, Kumar R, Sharma J, Bag J, Pal K, Panda TK, Chandrasekhar V. N^N vs. N^E (E = S or Se) coordination behavior of imino-phosphanamidinate chalcogenide ligands towards aluminum alkyls: efficient hydroboration catalysis of nitriles, alkynes, and alkenes. Dalton Trans 2023; 52:4481-4493. [PMID: 36919767 DOI: 10.1039/d3dt00038a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
The synthesis, characterization, and catalytic application of six aluminum alkyl complexes supported by various imino-phosphanamidinate chalcogenide ligands are described. Six different unsymmetrical imino-phosphanamidinate chalcogenide ligands [NHIRP(Ph)(E)NH-Dipp] [R = 2,6-diisopropylphenyl (Dipp), E = S (2a-H), Se (2b-H); R = mesityl (Mes), E = S (3a-H), Se (3b-H); R = tert-butyl (tBu), E = S (4a-H), Se (4b-H)] were prepared by the oxidation of respective imino-phosphanamide ligands (1a, 1b and 1c) with elemental chalcogen atoms (S and Se). The aluminum complexes with imino-phosphanamidinate chalcogenide ligands with the general formulae [κ2NN-{NHIRP(Ph)(E)N-Dipp}AlMe2] [R = Dipp, E = S (5a), Se (5b); R = Mes, E = S (6a), Se (6b)] or [κ2NE-{NHIRP(Ph)(E)N-Dipp}AlMe2] [R = tBu, E = S (7a), Se (7b)] were synthesized in good yields from the reaction of the suitable protic ligands (2a,b-H-4a,b-H) and trimethylaluminum in a 1 : 1 molar ratio in toluene at room temperature. All the protic ligands and aluminum complexes were well characterized by multi-nuclear NMR spectroscopy, and the solid-state structures of 2a,b-H-4a,b-H, 5a,b-6a,b and 7b are established by single crystal X-ray diffraction analysis. The aluminum complexes 5a,b-7a,b were tested as catalysts for the hydroboration of nitriles, alkynes, and alkenes under mild conditions. The catalytic hydroboration reactions of nitriles, alkynes, and alkenes were accomplished with complex 5b at a mild temperature under solvent-free conditions to afford a high yield of the corresponding N,N-diborylamines, vinylboranes and alkyl boronate esters, respectively.
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Affiliation(s)
- Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Ravi Kumar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Jyoti Sharma
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Jayanta Bag
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Kuntal Pal
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, 500107, Hyderabad, India. .,Department of Chemistry, IIT Kanpur, Kanpur 208016, India
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12
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Bano K, Sharma J, Jain A, Tsurugi H, Panda TK. A binuclear aluminium complex as a single competent catalyst for efficient synthesis of urea, biuret, isourea, isothiourea, phosphorylguanidine, and quinazolinones. RSC Adv 2023; 13:3020-3032. [PMID: 36756451 PMCID: PMC9850453 DOI: 10.1039/d2ra07714k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 12/22/2022] [Indexed: 01/21/2023] Open
Abstract
The synthesis and characterisation of two mononuclear aluminium alkyl complexes with the general composition [Al(Me)2{Ph2P(E)N(CH2)2N(CH2CH2)2O}] (E = Se (2a); S (2b)), and two binuclear aluminium complexes, [Al(Me)2{Ph2P-(E)N(CH2)2N(CH2CH2)2O}(AlMe3)] (E = Se (3a) and S (3b)), are described. The binuclear aluminium alkyl complex 3a proved to be a proficient catalyst for the addition of simple nucleophiles to heterocumulenes, leading to the synthesis of a variety of products such as urea, biuret, isourea, isothiourea, phosphorylguanidine, and quinazolinone derivatives, in contrast to its mononuclear analogues. Complex 3a is the first example of a single competent catalyst, which is also low-cost and eco-friendly and derived from a main-group metal, under solvent-free conditions either at room temperature or mild temperatures. Complex 3a possessed a wide functional group tolerance including heteroatoms, yielding the corresponding insertion products in good quantities and with high selectivity.
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Affiliation(s)
- Kulsum Bano
- Department of Chemistry, Indian Institute of Technology Kandi-502 285, Sangareddy Hyderabad Telangana India https://sites.google.com/site/tkpandagroup/home
| | - Jyoti Sharma
- Department of Chemistry, Indian Institute of Technology Kandi-502 285, Sangareddy Hyderabad Telangana India https://sites.google.com/site/tkpandagroup/home
| | - Archana Jain
- Department of Physics and Chemistry, Mahatma Gandhi Institute of Technology Gandipet-500 075 Hyderabad Telangana India
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University Toyonaka Osaka 560-8531 Japan
| | - Tarun K. Panda
- Department of Chemistry, Indian Institute of TechnologyKandi-502 285, SangareddyHyderabadTelanganaIndiahttps://sites.google.com/site/tkpandagroup/home
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13
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Panda TK, Banerjee I, Bhattacharjee J, Kumar R, Pal K. Synthesis, characterization and catalytic activities of Zn(II) and Cd(II) complexes supported by unsymmetrical aryl thiourea ligands. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Tarun K. Panda
- IITH: Indian Institute of Technology Hyderabad Chemistry KandiSangareddy 502285 Hyderabad INDIA
| | - Indrani Banerjee
- IITH: Indian Institute of Technology Hyderabad Chemistry Kandi 502284 Sangareddy INDIA
| | - Jayeeta Bhattacharjee
- IITH: Indian Institute of Technology Hyderabad Chemistry Kandi 502284 Sangareddy INDIA
| | - Ravi Kumar
- IITH: Indian Institute of Technology Hyderabad Chemistry 502284 Sangareddy INDIA
| | - Kuntal Pal
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India University of Calcutta 92, A.P.C. Road 700009 Kolkata INDIA
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14
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Das S, Maity J, Panda TK. Metal/Non-Metal Catalyzed Activation of Organic Nitriles. CHEM REC 2022; 22:e202200192. [PMID: 36126180 DOI: 10.1002/tcr.202200192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Indexed: 12/15/2022]
Abstract
Nitrile activation is a prominent topic in recent developments in chemistry, especially in organic, inorganic, biological chemistry, as well as in the natural synthesis of products and in the pharmaceutical industry. The activation of nitriles using both metal and non-metal precursors has attracted several researchers, who are exploring newer ways to synthesize novel compounds. Nitrile activation can be achieved by combining various catalytic double hydroelementation reactions, such as hydrosilylation, hydroboration, and hydrogenation of organonitriles using silanes, pinacolborane, and other sources of hydrogen. These methodologies have garnered considerable attention since they are effective in the reduction of organonitriles, whose end products are extensively applied in synthetic organic chemistry. In this review, we summarize the development of selective hydroborylation, hydrosilylation, dihydroborysilylation, and hydrogenation of organonitriles, as well as their reaction mechanisms and the role of metal complexes in the catalytic cycles. This review article explains various synthetic methodologies applied toward the reduction of organonitriles into corresponding amines.
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Affiliation(s)
- Suman Das
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 285, Sangareddy, Telangana, India
| | - Jyotirmoy Maity
- Department of Chemistry, St. Stephen's College, University of Delhi, Delhi, 110 007, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 285, Sangareddy, Telangana, India
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Das A, Panda TK. Metal‐Free Catalytic Hydroboration of Unsaturated Compounds: A Greener Strategy for the Synthesis of Organoboranes. ChemCatChem 2022. [DOI: 10.1002/cctc.202201011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Amrita Das
- TU Chemnitz: Technische Universitat Chemnitz Instute for Chemie Straße der Nationen 62 09111 Chemnitz GERMANY
| | - Tarun K. Panda
- IITH: Indian Institute of Technology Hyderabad Chemistry KandiSangareddy 502285 Hyderabad INDIA
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Sagar S, Bano K, Sarkar A, Pal K, Panda TK. Magnesium Promoted Active and Isoselective ROP of rac‐Lactide and ε‐Caprolactone Under Mild Conditions. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shweta Sagar
- IITH: Indian Institute of Technology Hyderabad Chemistry Kandi 502285 Sangareddy INDIA
| | - Kulsum Bano
- IITH: Indian Institute of Technology Hyderabad Chemistry Kandi 502285 Sangareddy INDIA
| | - Alok Sarkar
- Momentive Performance Materials Pvt Ltd Research and Development 560100 Bengaluru INDIA
| | - Kuntal Pal
- University of Calcutta Chemistry 700009 kolkata INDIA
| | - Tarun K. Panda
- IITH: Indian Institute of Technology Hyderabad Chemistry KandiSangareddy 502285 Hyderabad INDIA
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17
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Lorber C, Panda TK, Banerjee I, Sagar S. Catalytic addition reactions of amines, thiols, and diphenyl‐phosphine oxides to heterocumulenes using a bridging Sulfonylimido titanium(IV) complex. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christian Lorber
- CNRS Labo de Chimie de Coordination 205 route de Narbonne 31077 Toulouse FRANCE
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Sai Kumar G, Bhattacharjee J, Kumari K, Moorthy S, Bandyopadhyay A, Kumar Singh S, Panda TK. Hydroboration of Nitriles, Esters, and Amides Catalyzed by Simple Neosilyllithium. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115784] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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19
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Bano K, Kisan DA, Panda TK. Facile Synthesis of Benzimidazole and Benzothiazole Compounds Mediated by Zinc Precatalyst Supported by Iminopyrrole‐Morpholine Ligand. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kulsum Bano
- IITH: Indian Institute of Technology Hyderabad Chemistry KandiSangareddy 502285 INDIA
| | - Devadkar Ajitrao Kisan
- IITH: Indian Institute of Technology Hyderabad Chemistry KandiSangareddy 502285 Hyderabad INDIA
| | - Tarun K. Panda
- IITH: Indian Institute of Technology Hyderabad Chemistry KandiSangareddy 502285 Hyderabad INDIA
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Abstract
Organoboranes obtained from hydroboration reactions are one of the important classes of compounds that could be used to provide valuable synthons for follow-up transformations such as various functional group incorporation or C-C bond forming reactions. For decades, various transition metals were utilised as catalysts in such transformations. Recently Earth-abundant and less toxic main group metals have revived their importance in hydroboration chemistry, among which the suitable candidates are aluminium complexes as catalysts. In this regard, the development of aluminium complexes to achieve more robust catalytic systems with greater efficiency is appreciable.
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Affiliation(s)
- Amrita Das
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
| | - Supriya Rej
- Institut für Chemie, Technische Universität Berlin, Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502285, Sangareddy, Telangana, India.
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21
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Mahato S, Rawal P, Devadkar AK, Joshi M, Roy Choudhury A, Biswas B, Gupta P, Panda TK. Hydroboration and reductive amination of ketones and aldehydes with HBpin by a bench stable Pd(II)-catalyst. Org Biomol Chem 2022; 20:1103-1111. [PMID: 35029621 DOI: 10.1039/d1ob02339j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A palladium(II) complex [(κ4-{1,2-C6H4(NCH-C6H4O)2}Pd] (1) supported by a dianionic salen ligand [1,2-C6H4(NCH-C6H4O)2]2- (L) was synthesised and used as a molecular pre-catalyst in the hydroboration of aldehydes and ketones. The molecular structure of Pd(II) complex 1 was established by single-crystal X-ray diffraction analysis. Complex 1 was tested as a competent pre-catalyst in the hydroboration of aldehydes and ketones with pinacolborane (HBpin) to produce corresponding boronate esters in excellent yields at ambient temperature under solvent-free conditions. Further, the complex 1 proved to be a competent catalyst in the reductive amination of aldehydes with HBpin and primary amines under mild and solvent-free conditions to afford a high yield (up to 97%) of corresponding secondary amines. Both protocols provided high conversion, superior selectivity and broad substrate scope, from electron-withdrawing to electron-donating and heterocyclic substitutions. A computational study based on density functional theory (DFT) revealed a reaction mechanism for Pd-catalysed hydroboration of carbonyl species in the presence of HBpin. The protocols also uncovered the dual role of HBpin in achieving the hydroboration reaction.
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Affiliation(s)
- Shreya Mahato
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India.
| | - Parveen Rawal
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Ajitrao Kisan Devadkar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Mayank Joshi
- Department of Chemical Sciences, IISER Mohali, Punjab, India
| | | | - Bhaskar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India.
| | - Puneet Gupta
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
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22
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Narvariya R, Gupta S, Jain A, Rawal P, Gupta P, Panda TK. One‐Pot Reductive Amination of Aromatic Aldehydes in [Et
3
NH][HSO
4
] using Sodium Borohydride and A Mechanistic Investigation using Computational Method. ChemistrySelect 2022. [DOI: 10.1002/slct.202200052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Rajrani Narvariya
- Department of Chemistry Indian Institute of Technology Hyderabad 502284 Sangareddy Telangana India
| | - Shivangi Gupta
- Computational Catalysis Center Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
| | - Archana Jain
- Department of Physics & Chemistry Mahatma Gandhi Institute of Technology (MGIT) 500075 Hyderabad India
| | - Parveen Rawal
- Computational Catalysis Center Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
| | - Puneet Gupta
- Computational Catalysis Center Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad 502284 Sangareddy Telangana India
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Kumar GS, Moorthy S, Karmakar H, Singh SK, Panda TK. Neosilyllithium‐Catalyzed Hydroboration of Alkynes and Alkenes in the Presence of Pinacolborane (HBpin). Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gobbilla Sai Kumar
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Shruti Moorthy
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Himadri Karmakar
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Saurabh Kumar Singh
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
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Panda TK, Kumar R, Rawal P, Banerjee I, Nayek HP, Gupta P, Panda TK. Catalytic Hydroboration and Reductive Amination of Carbonyl Compounds by HBpin using a Zinc Promoter. Chem Asian J 2022; 17:e202200013. [PMID: 35020275 DOI: 10.1002/asia.202200013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Indexed: 11/10/2022]
Abstract
In this paper, the chemoselective hydroboration of aldehydes and ketones, catalyzed by Zinc(II) complexes [ k 2 -(PyCH=NR)ZnX 2 ] [R = CPh 3 , X = Cl ( 1 ) and R = Dipp (2,6-diisoropylphenyl) and X = I ( 2 )], in the presence of pinacolborane (HBpin) in ambient temperature and solvent-free conditions, which produced corresponding boronate esters in high yield, is reported. Zinc metal complexes 1 and 2 were derived in 80-90% yield from the reaction of iminopyridine [PyCH=NR] with anhydrous zinc dichloride in dichloromethane at room temperature. The solid-state structures of both zinc complexes were confirmed using X-ray crystallography. Zinc complex 1 was also used as a competent pre-catalyst in the reductive amination of carbonyl compounds with HBpin under mild and solvent-free conditions to afford a high yield (up to 97%) of the corresponding secondary amines. The wider substrate scope of both reactions was explored. Catalytic protocols using zinc as a pre-catalyst demonstrated an atom-economic and green method with diverse substrates bearing excellent functional group tolerance. Computational studies established a plausible mechanism for catalytic hydroboration.
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Affiliation(s)
- Tarun K Panda
- IITH: Indian Institute of Technology Hyderabad, Chemistry, Kandi, Sangareddy, 502285, Hyderabad, INDIA
| | - Ravi Kumar
- IITH: Indian Institute of Technology Hyderabad, Chemistry, Kandi, Sangareddy, 502285, Hyderabad, INDIA
| | - Parveen Rawal
- IIT Roorkee: Indian Institute of Technology Roorkee, Chemistry, Roorkee, 247667, Roorkee, INDIA
| | - Indrani Banerjee
- IITH: Indian Institute of Technology Hyderabad, Chemistry, Kandi, Sangareddy, 502285, Hyderabad, INDIA
| | - Hari Pada Nayek
- IIT (ISM): Indian Institute of Technology, Chemistry, Dhanbad, 826004, Dhanbad, INDIA
| | - Puneet Gupta
- IIT Roorkee: Indian Institute of Technology Roorkee, Chemistry, Roorkee, 247667, Roorkee, INDIA
| | - Tarun K Panda
- IITH: Indian Institute of Technology Hyderabad, Chemistry, Kandi, Sangareddy, 502285, Hyderabad, INDIA
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25
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Karmakar H, Anga S, Panda TK, Chandrasekhar V. Aluminium alkyl complexes supported by imino-phosphanamide ligand as precursors for catalytic guanylation reactions of carbodiimides. RSC Adv 2022; 12:4501-4509. [PMID: 35425514 PMCID: PMC8981115 DOI: 10.1039/d2ra00242f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 01/13/2023] Open
Abstract
Herein, we report the synthesis, characterisation, and application of three aluminium alkyl complexes, [κ2-{NHIRP(Ph)NDipp}AlMe2] (R = Dipp (2a), Mes (2b); tBu (2c), Dipp = 2,6-diisopropylphenyl, Mes = mesityl, and tBu = tert-butyl), supported by unsymmetrical imino-phosphanamide [NHIRP(Ph)NDipp]− [R = Dipp (1a), Mes (1b), tBu (1c)] ligands as molecular precursors for the catalytic synthesis of guanidines using carbodiimides and primary amines. All the imino-phosphanamide ligands 1a, 1b and 1c were prepared in good yield from the corresponding N-heterocyclic imine (NHI) with phenylchloro-2,6-diisopropylphenylphosphanamine, PhP(Cl)NHDipp. The aluminium alkyl complexes 2a, 2b and 2c were obtained in good yield upon completion of the reaction between trimethyl aluminium and the protic ligands 1a, 1b and 1c in a 1 : 1 molar ratio in toluene via the elimination of methane, respectively. The molecular structures of the protic ligands 1b and 1c and the aluminium complexes 2a, 2b and 2c were established via single-crystal X-ray diffraction analysis. Complexes 2a, 2b and 2c were tested as pre-catalysts for the hydroamination/guanylation reaction of carbodiimides with aryl amines to afford guanidines at ambient temperature. All the aluminium complexes exhibited a high conversion with 1.5 mol% catalyst loading and broad substrate scope with a wide functional group tolerance during the guanylation reaction. We also proposed the most plausible mechanism, involving the formation of catalytically active three-coordinate Al species as the active pre-catalyst. Three aluminium alkyl complexes, [κ2-{ImRNP(Ph)NDipp}AlMe2] (2a–2c), supported by unsymmetrical imino-phosphanamide were synthesised and utilised as competent precatalysts for the hydroamination of carbodiimides under ambient conditions.![]()
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Affiliation(s)
- Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India
| | - Srinivas Anga
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, 500107, Hyderabad, India
| | - Tarun K. Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, 500107, Hyderabad, India
- Department of Chemistry, IIT Kanpur, Kanpur 208016, India
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27
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Affiliation(s)
- Supriya Rej
- Institut für Chemie Technische Universität Berlin Berlin, Strasse des 17. Juni 115 10623 Berlin Germany
| | - Amrita Das
- Department of Applied Chemistry Faculty of Engineering Osaka University 565-0871 Suita Osaka Japan
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi 502285 Sangareddy Telangana India
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28
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Banerjee I, Panda TK. Recent advances in the carbon-phosphorus (C-P) bond formation from unsaturated compounds by s- and p-block metals. Org Biomol Chem 2021; 19:6571-6587. [PMID: 34231617 DOI: 10.1039/d1ob01019k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Researchers around the globe have witnessed several breakthroughs in s- and p-block metal chemistry. Over the past few years, several applications in catalysis associated with these main group metals have been established, and owing to their abundance and low cost and they have proved to be essential alternatives to transition metal catalysts. In this review, we present a detailed discussion on the catalytic addition of P-H bonds from various phosphine reagents to multiple bonds of unsaturated substrates for the synthesis of organophosphorus compounds with C-P bonds promoted by various s- and p-block metal catalysts, as published in the last decade.
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Affiliation(s)
- Indrani Banerjee
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 285, Sangareddy, Telangana, India. and School of Basic and Applied Sciences, Raffles University, Neemrana - 301705, Alwar, Rajasthan, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502 285, Sangareddy, Telangana, India.
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29
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Bhattacharjee J, Sarkar A, Panda TK. Cover Picture: Alkali and Alkaline Earth Metal Complexes as Versatile Catalysts for Ring‐Opening Polymerization of Cyclic Esters (Chem. Rec. 8/2021). CHEM REC 2021. [DOI: 10.1002/tcr.202180801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi 502 285 Sangareddy Telangana India
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd. Survey No. 09, Hosur Road, Electronic City (west) Bangalore 560100 India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi 502 285 Sangareddy Telangana India
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Bhattacharjee J, Sarkar A, Panda TK. Alkali and Alkaline Earth Metal Complexes as Versatile Catalysts for Ring-Opening Polymerization of Cyclic Esters. CHEM REC 2021; 21:1898-1911. [PMID: 34197009 DOI: 10.1002/tcr.202100148] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/10/2021] [Accepted: 06/17/2021] [Indexed: 12/30/2022]
Abstract
Biodegradable polyesters such as poly(ϵ-caprolactone) (PCL) and poly(lactic acid) (PLA) have been considered for use in several areas, such as drug delivery devices, sutures, tissue engineering, and GBR membranes, due to its bio-renewability, biodegradability, and biocompatibility. Several synthetic techniques for the preparation of polyesters have been reported in the literature, amongst which the ring-opening polymerization (ROP) of cyclic esters is the most efficient. A convenient approach to access iso-selective PLAs is polymerization of racemic lactide (rac-LA), which shows excellent stereoregularity without the need for costly chiral auxiliaries or ligands. In this personal account, we review a series of methods that have been practiced to the synthesis of biodegradable polyesters from various cyclic monomers using alkali and alkaline earth metal complexes as efficient catalysts.
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Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad Kandi, 502 285, Sangareddy, Telangana, India
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd., Survey No. 09, Hosur Road, Electronic City (west), Bangalore, 560100, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad Kandi, 502 285, Sangareddy, Telangana, India
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31
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Affiliation(s)
- Indrani Banerjee
- Department of Chemistry Indian Institute of Technology Hyderabad Sangareddy India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Sangareddy India
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32
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Das S, Rawal P, Bhattacharjee J, Devadkar A, Pal K, Gupta P, Panda TK. Indium promoted C(sp 3)–P bond formation by the Domino A 3-coupling method – a combined experimental and computational study. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01210f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An efficient catalytic process for the synthesis of α-aminophosphonates is developed by a one-pot three-component reaction in the presence of In complexes at room temperature. DFT based mechanistic studies of the catalytic reactions are reported.
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Affiliation(s)
- Suman Das
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
| | - Parveen Rawal
- Computational Catalysis Center
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee – 247667
- India
| | - Jayeeta Bhattacharjee
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
| | - Ajitrao Devadkar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
| | - Kuntal Pal
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Puneet Gupta
- Computational Catalysis Center
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee – 247667
- India
| | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
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33
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Das S, Kumar R, Devadkar A, Panda TK. Zinc Complexes ofβ‐Ketoiminato Ligands as Efficient Catalysts for the Synthesis of α‐Amino Nitriles via Strecker Reaction. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000278] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Suman Das
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
| | - Ravi Kumar
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
| | - Ajitrao Devadkar
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
| | - Tarun K. Panda
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502285, Sangareddy Telangana India
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34
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Abstract
Amidines are a preeminent group of organic compounds having wide applications in various industries. Here, we have developed a simple one-step reaction protocol for the facile synthesis of N-arylamidines catalysed by calcium bis(hexamethyldisilazide) [Ca{N(SiMe3)2}2(THF)2]. The amidine synthesis was readily achieved from organic nitriles and amines which provided a broad substrate scope ranging from electron-withdrawing to electron-donating substitutions as well as heterocyclic substitution. The reaction was carried out in a solvent-free medium under ambient conditions. The nucleophilic addition of aromatic amines to aryl nitriles led to good to excellent yields of the corresponding amidines. The reactivity of the amidines was further examined and the respective urea derivatives were achieved in excellent yields. The plausible mechanism involves the generation of an active calcium amido pre-catalyst that helps in the activation of nitriles in the reaction course.
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Affiliation(s)
- Indrani Banerjee
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
| | - Shweta Sagar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
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35
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Affiliation(s)
- Tarun K. Panda
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi Sangareddy Telangana 502285 India
| | - Indrani Banerjee
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi Sangareddy Telangana 502285 India
| | - Shweta Sagar
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi Sangareddy Telangana 502285 India
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Sengupta S, Khan S, Chattopadhyay SK, Banerjee I, Panda TK, Naskar S. Trinuclear copper and mononuclear nickel complexes of oxime containing Schiff bases: Single crystal X-ray structure, catecholase and phenoxazinone synthase activity, catalytic study for the homocoupling of benzyl amines. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Bano K, Jain A, Sarkar R, Panda TK. Economically Viable and Efficient Catalysts for Esterification and Cross Aldol Condensation Reactions under Mild Conditions. ChemistrySelect 2020. [DOI: 10.1002/slct.202000252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kulsum Bano
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502 285, Sangareddy, Telangana India
| | - Archana Jain
- Department of Physics and ChemistryMahatma Gandhi Institute of Technology, Gandipet Hyderabad 500075, Telangana India
| | - Ratan Sarkar
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502 285, Sangareddy, Telangana India
| | - Tarun K. Panda
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi 502 285, Sangareddy, Telangana India
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Bhattacharjee J, Harinath A, Sarkar A, Panda TK. Alkaline Earth Metal-Mediated Highly Iso-selective Ring-Opening Polymerization of rac-Lactide. Chem Asian J 2020; 15:860-866. [PMID: 32022475 DOI: 10.1002/asia.201901751] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/20/2020] [Indexed: 11/06/2022]
Abstract
Alkaline earth (Ae) metal complexes of the aminophosphine borane ligand are highly active and iso-selective catalysts for the ring-opening polymerization (ROP) of rac-lactide (LA). The polymerization reactions are well controlled and produce polylactides with molecular weights that are precise and narrowly distributed. Kinetic studies reveal that the ROP of rac-LA catalyzed by all Ae metal complexes had a first-order dependency on LA concentration as well as catalyst concentration. A plausible reaction mechanism for Ae metal complex-mediated ROP of rac-LA is discussed, based on controlled kinetic experiments and molecular chain mobility.
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Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502285, Sangareddy, Telangana, India
| | - Adimulam Harinath
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502285, Sangareddy, Telangana, India
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd., Bangalore, 560 100, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi - 502285, Sangareddy, Telangana, India
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39
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Bhattacharjee J, Harinath A, Bano K, Panda TK. Highly Chemoselective Hydroboration of Alkynes and Nitriles Catalyzed by Group 4 Metal Amidophosphine-Borane Complexes. ACS Omega 2020; 5:1595-1606. [PMID: 32010834 PMCID: PMC6990649 DOI: 10.1021/acsomega.9b03598] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/26/2019] [Indexed: 06/10/2023]
Abstract
We report a series of titanium and zirconium complexes supported by dianionic amidophosphine-borane ligands, synthesized by amine elimination and salt metathesis reactions. The TiIV complex [{Ph2P(BH3)N}2C6H4Ti(NMe2)2] (1) was obtained by the reaction between tetrakis-(dimethylamido)titanium(IV) and the protic aminophosphine-borane ligand [{Ph2P(BH3)NH}2C6H4] (LH2) at ambient temperature. Both the heteroleptic zirconium complexes-[η5-(C5H5)2Zr{Ph2P(BH3)N}2C6H4] (2) and [[{Ph2P(BH3)N}2C6H4]ZrCl2] (3)-and the homoleptic zirconium complex [[{Ph2P(BH3)N}2C6H4]2Zr] (4) were obtained in good yield by the salt metathesis reaction of either zirconocene dichloride [η5-(C5H5)2ZrCl2] or zirconium tetrachloride with the dilithium salt of the ligand [{Ph2P(BH3)NLi}2C6H4] (LLi2), which was prepared in situ. The molecular structures of the complexes 1, 2, and 4 in their solid states were confirmed by single-crystal X-ray diffraction analysis. Of these complexes, only titanium complex 1 acts as an effective catalyst for the facile hydroboration of terminal alkynes, yielding exclusive E-isomers. The hydroboration of organic nitriles yielded diborylamines with a broad substrate scope, including broad functional group compatibility. The mechanism of hydroboration occurs through the formation of titanium hydride as an active species.
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Affiliation(s)
- Gobbilla Sai Kumar
- Department of Chemistry Indian Institute of Technology Hyderabad, Kandi ‐502 285 Sangareddy Telangana India
| | - Adimulam Harinath
- Department of Chemistry Indian Institute of Technology Hyderabad, Kandi ‐502 285 Sangareddy Telangana India
| | - Rajrani Narvariya
- Department of Chemistry Indian Institute of Technology Hyderabad, Kandi ‐502 285 Sangareddy Telangana India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad, Kandi ‐502 285 Sangareddy Telangana India
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41
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Affiliation(s)
- Suman Das
- Department of Chemistry, I ndian Institute of Technology Hyderabad Kandi – 502 285, Sangareddy, Telangana India
| | - Nidhi Rawat
- Department of Chemistry, I ndian Institute of Technology Hyderabad Kandi – 502 285, Sangareddy, Telangana India
| | - Tarun K. Panda
- Department of Chemistry, I ndian Institute of Technology Hyderabad Kandi – 502 285, Sangareddy, Telangana India
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42
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Bano K, Anga S, Jain A, Nayek HP, Panda TK. Hydroamination of isocyanates and isothiocyanates by alkaline earth metal initiators supported by a bulky iminopyrrolyl ligand. NEW J CHEM 2020. [DOI: 10.1039/d0nj01509a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis of heteroleptic and homoleptic alkaline earth metal complexes supported by bulky bis-iminopyrrolyl ligands are reported. The catalytic hydroamination of isocyanates and isothiocyanates with aryl amines using calcium complex is presented.
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Affiliation(s)
- Kulsum Bano
- Department of Chemistry
- Indian Institute of Technology, Hyderabad, Kandi
- Sangareddy
- India
| | - Srinivas Anga
- Department of Chemistry
- Indian Institute of Technology, Hyderabad, Kandi
- Sangareddy
- India
| | - Archana Jain
- Department of Physics and Chemistry
- Mahatma Gandhi Institute of Technology
- Gandipet
- Hyderabad 500075
- India
| | - Hari Pada Nayek
- Department of Applied Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad
- India
| | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology, Hyderabad, Kandi
- Sangareddy
- India
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43
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Kathirvelan D, Mayakrishnan S, Uma Maheswari N, Biswas C, Raavi SSK, Panda TK. A simple D–π–A system of phenanthroimidazole-π-fluorenone for highly efficient non-doped bipolar AIE luminogens: synthesis, and molecular optical, thermal and electrochemical properties. NEW J CHEM 2020. [DOI: 10.1039/c9nj05226g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We report the synthesis of phenanthroimidazole based dyes incorporating fluorenone using Suzuki coupling and their aggregation induced emission characterisation.
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Affiliation(s)
| | - Sivakalai Mayakrishnan
- Organic & Bioorganic Chemistry Laboratory
- CSIR-Central Leather Research Institute
- Chennai
- India
| | - Narayanan Uma Maheswari
- Organic & Bioorganic Chemistry Laboratory
- CSIR-Central Leather Research Institute
- Chennai
- India
| | - Chinmoy Biswas
- Department of Physics
- Indian Institute of Technology Hyderabad
- India
| | | | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- India
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Banerjee I, Anga S, Bano K, Panda TK. Efficient and chemoselective hydroboration of organic nitriles promoted by TiIV catalyst supported by unsymmetrical acenaphthenequinonediimine ligand. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120958] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Bhattacharjee J, Harinath A, Sarkar A, Panda TK. Polymerization of ϵ‐Caprolactam to Nylon‐6 Catalyzed by Barium σ‐Borane Complex under Mild Condition. ChemCatChem 2019. [DOI: 10.1002/cctc.201900920] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jayeeta Bhattacharjee
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi- 502 285, Sangareddy, Telangana India
| | - Adimulam Harinath
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi- 502 285, Sangareddy, Telangana India
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd. Survey No. 09 Hosur Road, Electronic City (West) Bangalore- 560100 India
| | - Tarun K. Panda
- Department of ChemistryIndian Institute of Technology Hyderabad Kandi- 502 285, Sangareddy, Telangana India
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46
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Affiliation(s)
- Indrani Banerjee
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi – 502 285, Sangareddy, Telangana India
| | - Adimulam Harinath
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi – 502 285, Sangareddy, Telangana India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi – 502 285, Sangareddy, Telangana India
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Damaraju M, Yoshihara H, Bhattacharyya D, Panda TK, Kurilla KK. Phosphorus recovery from the sludge generated from a continuous bipolar mode electrocoagulation (CBME) system. Water Sci Technol 2019; 79:1348-1356. [PMID: 31123234 DOI: 10.2166/wst.2019.131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Phosphorus is known to be a limited non-renewable resource. Phosphorus is obtained from phosphate rock, which is likely to be depleted in the next few decades. Therefore, it is very important to find alternate sources of phosphorus from which phosphorus can be recycled and recovered. This study focuses on the recovery of phosphorus from the sludge generated from a continuous bipolar mode electrocoagulation (CBME) system, used for treating a palm oil mill effluent (POME). The sludge generated from the CBME system is leached with oxalic acid and sulphuric acid for phosphorus recovery with and without thermal treatment. Acid leaching was carried out at various time intervals using various liquid/solid (L/S) ratios of acids and sludge. The CBME system caused a 73% removal of phosphorus from POME, where phosphorus is precipitated in sludge as iron phosphates or adsorbed as phosphates depending on the pH in the system. Acid leaching resulted in nearly 85% recovery of phosphorus with both sulphuric acid and oxalic acid for sludge combusted at 900 °C. Statistical analysis was carried out to find the significance of the operational conditions on the phosphorus yield. Acid leaching results in the formation of orthophosphates, which can be used as a raw material for synthesis of chemical fertilizers.
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Affiliation(s)
- M Damaraju
- Department of Civil Engineering, Indian Institute of Technology-Hyderabad, Telangana, 502285, India E-mail:
| | - H Yoshihara
- Division of Environmental Engineering, Hokkaido University, Sapporo, 060-0808, Japan
| | - D Bhattacharyya
- Department of Civil Engineering, Indian Institute of Technology-Hyderabad, Telangana, 502285, India E-mail:
| | - T K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Telangana, 502285, India
| | - K K Kurilla
- Rahyals Envergy India Pvt Ltd, Kukatpally, Hyderabad, Telangana, 500085, India
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Harinath A, Bhattacharjee J, Panda TK. Facile reduction of carboxylic acids to primary alcohols under catalyst-free and solvent-free conditions. Chem Commun (Camb) 2019; 55:1386-1389. [PMID: 30607398 DOI: 10.1039/c8cc08841a] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We report the development of a facile protocol for the deoxygenative hydroboration of aliphatic and aryl carboxylic acids to afford corresponding primary alcohols under solvent-free and catalyst-free conditions. The reaction proceeds under ambient temperature exhibits good tolerance towards various functional groups and generates quantitative yields. The plausible mechanism involves the formation of Lewis acid-base adducts as well as the liberation of hydrogen gas.
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Affiliation(s)
- Adimulam Harinath
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
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49
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Abstract
Catalytic hydroboration of terminal alkenes/alkynes with HBpin using the Al(III) catalyst, [κ2-{Ph2P(=Se)NCH2(C5H4N)}Al(CH3)2] (1), under mild and solvent-free conditions to afford corresponding alkyl/alkenyl boronate esters in high yield is reported.
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Affiliation(s)
- Adimulam Harinath
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Indrani Banerjee
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | | | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy
- India
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50
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Das S, Karmakar H, Bhattacharjee J, Panda TK. Aluminium complex as an efficient catalyst for the chemo-selective reduction of amides to amines. Dalton Trans 2019; 48:11978-11984. [DOI: 10.1039/c9dt01806a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic chemo-selective reduction of tert-amides with pinacolborane (HBpin) to furnish the corresponding tert-amines using an Earth-abundant Al complex under solvent-free, base-free and mild conditions is reported.
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Affiliation(s)
- Suman Das
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
| | - Himadri Karmakar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
| | - Jayeeta Bhattacharjee
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
| | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Sangareddy 502285
- India
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