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Calder EDE, Male L, Jupp AR. Accessing five- and seven-membered phosphorus-based heterocycles via cycloaddition reactions of azophosphines. Dalton Trans 2024. [PMID: 39143836 DOI: 10.1039/d4dt02248c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
Heterocycles containing both phosphorus and nitrogen have seen increasing use in recent years in luminescent materials, coordination chemistry and as building blocks for inorganic polymers, yet their chemistry is currently dominated by five- and six-membered derivatives. Seven-membered P/N heterocycles are comparatively scarce and lack general, high yielding syntheses. Here, we explore the synthesis and characterisation of 1,2,5-diazaphosphepines from azophosphines. The mechanism has been probed in detail with both computational and experimental studies supporting a stepwise mechanism to form a five-membered ring, and subsequent ring expansion to the diazaphosphepine. Regioselective synthesis of five- and seven-membered rings is possible using asymmetric alkynes. The Lewis acidic borane B(C6F5)3 could either catalyse the formation of the seven-membered ring (iPr derivative) or trap out a key intermediate via a frustrated Lewis pair (FLP) mechanism (tBu derivative).
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Affiliation(s)
- Ethan D E Calder
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Louise Male
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Andrew R Jupp
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
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Pokorny T, Doroshenko I, Machac P, Simonikova L, Bittova M, Moravec Z, Karaskova K, Skoda D, Pinkas J, Styskalik A. Copper Phosphinate Complexes as Molecular Precursors for Ethanol Dehydrogenation Catalysts. Inorg Chem 2023. [PMID: 38032353 DOI: 10.1021/acs.inorgchem.3c01678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Nowadays, the production of acetaldehyde heavily relies on the petroleum industry. Developing new catalysts for the ethanol dehydrogenation process that could sustainably substitute current acetaldehyde production methods is highly desired. Among the ethanol dehydrogenation catalysts, copper-based materials have been intensively studied. Unfortunately, the Cu-based catalysts suffer from sintering and coking, which lead to rapid deactivation with time-on-stream. Phosphorus doping has been demonstrated to diminish coking in methanol dehydrogenation, fluid catalytic cracking, and ethanol-to-olefin reactions. This work reports a pioneering application of the well-characterized copper phosphinate complexes as molecular precursors for copper-based ethanol dehydrogenation catalysts enriched with phosphate groups (Cu-phosphate/SiO2). Three new catalysts (CuP-1, CuP-2, and CuP-3), prepared by the deposition of complexes {Cu(SAAP)}n (1), [Cu6(BSAAP)6] (2), and [Cu3(NAAP)3] (3) on the surface of commercial SiO2, calcination at 500 °C, and reduction in the stream of the forming gas 5% H2/N2 at 400 °C, exhibited unusual properties. First, the catalysts showed a rapid increase in catalytic activity. After reaching the maximum conversion, the catalyst started to deactivate. The unusual behavior could be explained by the presence of the phosphate phase, which made Cu2+ reduction more difficult. The phosphorus content gradually decreased during time-on-stream, copper was reduced, and the activity increased. The deactivation of the catalyst could be related to the copper diffusion processes. The most active CuP-1 catalyst reaches a maximum of 73% ethanol conversion and over 98% acetaldehyde selectivity at 325 °C and WHSV = 2.37 h-1.
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Affiliation(s)
- Tomas Pokorny
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
| | - Iaroslav Doroshenko
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
| | - Petr Machac
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
| | - Lucie Simonikova
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
| | - Miroslava Bittova
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
| | - Zdenek Moravec
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
| | - Katerina Karaskova
- Institute of Environmental Technology,CEET, VSB-TUO, CZ-70800 Ostrava, Czech Republic
| | - David Skoda
- Centre of Polymer Systems, Tomas Bata University in Zlin, Tr. Tomase Bati 5678, CZ-76001 Zlin, Czech Republic
| | - Jiri Pinkas
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
| | - Ales Styskalik
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
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Holik HA, Ibrahim FM, Elaine AA, Putra BD, Achmad A, Kartamihardja AHS. The Chemical Scaffold of Theranostic Radiopharmaceuticals: Radionuclide, Bifunctional Chelator, and Pharmacokinetics Modifying Linker. Molecules 2022; 27:molecules27103062. [PMID: 35630536 PMCID: PMC9143622 DOI: 10.3390/molecules27103062] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 11/16/2022] Open
Abstract
Therapeutic radiopharmaceuticals have been researched extensively in the last decade as a result of the growing research interest in personalized medicine to improve diagnostic accuracy and intensify intensive therapy while limiting side effects. Radiometal-based drugs are of substantial interest because of their greater versatility for clinical translation compared to non-metal radionuclides. This paper comprehensively discusses various components commonly used as chemical scaffolds to build radiopharmaceutical agents, i.e., radionuclides, pharmacokinetic-modifying linkers, and chelators, whose characteristics are explained and can be used as a guide for the researcher.
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Affiliation(s)
- Holis Abdul Holik
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia; (F.M.I.); (A.A.E.); (B.D.P.)
- Correspondence:
| | - Faisal Maulana Ibrahim
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia; (F.M.I.); (A.A.E.); (B.D.P.)
| | - Angela Alysia Elaine
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia; (F.M.I.); (A.A.E.); (B.D.P.)
| | - Bernap Dwi Putra
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia; (F.M.I.); (A.A.E.); (B.D.P.)
| | - Arifudin Achmad
- Department of Nuclear Medicine and Molecular Theranostics, Faculty of Medicine, Universitas Padjadjaran/Hasan Sadikin General Hospital, Bandung 40161, Indonesia; (A.A.); (A.H.S.K.)
- Oncology and Stem Cell Working Group, Faculty of Medicine, Universitas Padjadjaran, Bandung 40161, Indonesia
| | - Achmad Hussein Sundawa Kartamihardja
- Department of Nuclear Medicine and Molecular Theranostics, Faculty of Medicine, Universitas Padjadjaran/Hasan Sadikin General Hospital, Bandung 40161, Indonesia; (A.A.); (A.H.S.K.)
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Pazderová L, Kubíček V, Kotek J, Hermann P. 1,4,7‐Triazacyclononane (tacn) with
N,N
′‐bridging methylene‐bis(phosphinic acid) group and its complexes. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lucia Pazderová
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 128 40 Prague 2 Czech Republic
| | - Vojtěch Kubíček
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 128 40 Prague 2 Czech Republic
| | - Jan Kotek
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 128 40 Prague 2 Czech Republic
| | - Petr Hermann
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 128 40 Prague 2 Czech Republic
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Pazderová L, David T, Kotek J, Kubíček V, Hermann P. Complexes of cyclen side-bridged with a methylene-bis(phosphinate) group. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Alexandratos SD, Zhu X, Marianski MR. Binding of Divalent Transition Metal Ions to Immobilized Phosphinic Acid Ligands. Part I. Characterization by Fourier Transform Infrared Spectroscopy. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2020.1831238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Spiro D. Alexandratos
- Department of Chemistry, Hunter College of the City University of New York, New York, New York, USA
- The Ph.D. Program in Chemistry, Graduate Center of the City University of New York, New York, New York, USA
| | - Xiaoping Zhu
- Department of Chemistry, Hunter College of the City University of New York, New York, New York, USA
| | - Mateusz R. Marianski
- Department of Chemistry, Hunter College of the City University of New York, New York, New York, USA
- The Ph.D. Program in Chemistry, Graduate Center of the City University of New York, New York, New York, USA
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Emerson AJ, Chahine A, Batten SR, Turner DR. Synthetic approaches for the incorporation of free amine functionalities in porous coordination polymers for enhanced CO2 sorption. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Piasta K, Dziełak A, Mucha A, Gumienna-Kontecka E. Non-symmetrical bis(aminoalkyl)phosphinates: new ligands with enhanced binding of Cu(ii) ions. NEW J CHEM 2018. [DOI: 10.1039/c8nj01094c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel, non-symmetrical bis(aminoalkyl)phosphinic acids exhibit enhanced efficiency in Cu(ii) ion binding.
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Affiliation(s)
- Karolina Piasta
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - Anna Dziełak
- Department of Bioorganic Chemistry
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
| | - Artur Mucha
- Department of Bioorganic Chemistry
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
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