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Huszár B, Szolga R, Bősze S, Oláhné Szabó R, Simon A, Karaghiosoff K, Czugler M, Drahos L, Keglevich G. Synthesis and Anticancer Activity of Phosphinoylated and Phosphonoylated N-Heterocycles Obtained by the Microwave-Assisted Palladium Acetate-Catalyzed Hirao Reaction. Chemistry 2023; 29:e202302465. [PMID: 37711077 DOI: 10.1002/chem.202302465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 09/12/2023] [Indexed: 09/16/2023]
Abstract
A literature survey showed that different derivatives with the 9-phenyl-9H-carbazole or the dihydroindoline scaffold may be of biological activity including cytotoxic effect. Driven by this experience, P-functionalized derivatives of these N-heterocycles were synthesized. Three N-heterocycles, 9-(4-bromophenyl)-9H-carbazole, 3-bromo-9-phenyl-9H-carbazole and 1-(5-bromoindolin-1-yl)ethan-1-one, were coupled with dialkyl phosphites and diarylphosphine oxides using Pd(OAc)2 (10 %) as the catalyst precursor and triethylamine as the base in ethanol under microwave irradiation. The excess of the Y2 P(O)H reagent (Y=alkoxy, aryl) (30 %) served as the P-ligand in its trivalent tautomeric form (Y2 POH), hence there was no need for the usual P-ligands meaning cost and environmental burden. Hence, the presented method is a "green" approach that proved to be more efficient than the preparation by the traditional method. The products, dialkyl phosphonates and tertiary phosphine oxides obtained in 58-84 % yields were characterized, one of them also by single crystal X-ray analysis, and were subjected to in vitro biological activity evaluation. A (carbazol)yl-phenylphosphonate, an N-phenyl-(carbazol)yl-phosphonate, a (carbazol)yl-phenylphosphine oxide and an N-phenyl-(carbazol)ylphosphine oxide revealed a significant cytotoxic activity on A549 human non-small-cell lung carcinoma and MonoMac-6 acute monocytic leukemia cancer cells. The cytotoxic effect was significant as compared to that of the reference compounds.
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Affiliation(s)
- Bianka Huszár
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - Renáta Szolga
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - Szilvia Bősze
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117, Budapest, Hungary
| | - Rita Oláhné Szabó
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117, Budapest, Hungary
- Department of Genetics, Cell-and Immunobiology, Semmelweis University, 1089, Budapest, Nagyvárad tér 4, Hungary
| | - András Simon
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - Konstantin Karaghiosoff
- Department Chemie, Ludwig-Maximilians-Universitat München, 81377, München, Butenandtstr. 5-13, Germany
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, 1117, Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
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Huszár B, Mucsi Z, Szolga R, Keglevich G. New data on the Hirao reaction; The use of Cu(II) salts as the catalyst precursor under microwave irradiation in the absence of added P-ligands. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Keglevich G, Harsági N, Varga PR, Huszár B, Henyecz R, Kiss NZ, Mucsi Z, Bagi P. Newer developments in the green synthesis of tertiary phosphine oxides, phosphinates, phosphonates and their derivatives. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.1990924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Nikoletta Harsági
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Petra R. Varga
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Bianka Huszár
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Réka Henyecz
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Nóra Z. Kiss
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Zoltán Mucsi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Bagi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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Huszár B, Henyecz R, Mucsi Z, Keglevich G. Microwave assisted P–C coupling reactions without directly added P-ligands. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.2011884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Bianka Huszár
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Réka Henyecz
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Zoltán Mucsi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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Zagidullin AA, Sakhapov IF, Miluykov VA, Yakhvarov DG. Nickel Complexes in C‒P Bond Formation. Molecules 2021; 26:molecules26175283. [PMID: 34500716 PMCID: PMC8434593 DOI: 10.3390/molecules26175283] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
This review is a comprehensive account of reactions with the participation of nickel complexes that result in the formation of carbon-phosphorus (C‒P) bonds. The catalytic and non-catalytic reactions with the participation of nickel complexes as the catalysts and the reagents are described. The various classes of starting compounds and the products formed are discussed individually. The several putative mechanisms of the nickel catalysed reactions are also included, thereby providing insights into both the synthetic and the mechanistic aspects of this phosphorus chemistry.
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MW-Promoted Cu(I)-Catalyzed P–C Coupling Reactions without the Addition of Conventional Ligands; an Experimental and a Theoretical Study. Catalysts 2021. [DOI: 10.3390/catal11080933] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An experimental and a theoretical study on the so far less investigated Cu(I) salt-catalyzed Hirao reaction of iodobenzene and diarylphosphine oxides (DAPOs) revealed that Cu(I)Br or Cu(I)Cl is the most efficient catalyst under microwave irradiation. The optimum conditions included 165 °C and a 1:2 molar ratio for DAPOs and triethylamine. The possible ligations of Cu(I) were studied in detail. Bisligated P---Cu(I)---P (A), P---Cu(I)---N (B) and N---Cu(I)---N (C) complexes were considered as the catalysts. Calculations on the mechanism suggested that complexes A and B may catalyze the P–C coupling, but the latter one is more advantageous both according to experiments and calculations pointing out the Cu(I) → Cu(III) conversion in the oxidative addition step. The P–C coupling cannot take place with PhBr, as in this case, the catalyst complex cannot be regenerated.
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Hou H, Zhou B, Wang J, Sun D, Yu H, Chen X, Han Y, Shi Y, Yan C, Zhu S. Visible-light-induced ligand to metal charge transfer excitation enabled phosphorylation of aryl halides. Chem Commun (Camb) 2021; 57:5702-5705. [PMID: 33982720 DOI: 10.1039/d1cc01858b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We herein described a visible light induced nickel(II)-catalyzed cross-coupling of secondary phosphine oxides with aryl halides. The Ni(I) species and chlorine atom radical Cl˙ were generated via the ligand to metal charge transfer (LMCT) process of the NiCl2(PPh3)2, which allows nickel(IV)-phosphorus species in situ formation, giving various tertiary phosphine oxides under photocatalyst-free conditions.
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Affiliation(s)
- Hong Hou
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Bing Zhou
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Jiawei Wang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Duhao Sun
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Huaguang Yu
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Xiaoyun Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212005, China
| | - Ying Han
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Yaocheng Shi
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Chaoguo Yan
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Shaoqun Zhu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China.
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Keglevich G. Microwaves as "Co-Catalysts" or as Substitute for Catalysts in Organophosphorus Chemistry. Molecules 2021; 26:1196. [PMID: 33672361 PMCID: PMC7926777 DOI: 10.3390/molecules26041196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 11/16/2022] Open
Abstract
The purpose of this review is to summarize the importance of microwave (MW) irradiation as a kind of catalyst in organophosphorus chemistry. Slow or reluctant reactions, such as the Diels-Alder cycloaddition or an inverse-Wittig type reaction, may be performed efficiently under MW irradiation. The direct esterification of phosphinic and phosphonic acids, which is practically impossible on conventional heating, may be realized under MW conditions. Ionic liquid additives may promote further esterifications. The opposite reaction, the hydrolysis of P-esters, has also relevance among the MW-assisted transformations. A typical case is when the catalysts are substituted by MWs, which is exemplified by the reduction of phosphine oxides, and by the Kabachnik-Fields condensation affording α-aminophosphonic derivatives. Finally, the Hirao P-C coupling reaction may serve as an example, when the catalyst may be simplified under MW conditions. All of the examples discussed fulfill the expectations of green chemistry.
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Affiliation(s)
- György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
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Focusing on the Catal. of the Pd- and Ni-Catalyzed Hirao Reactions. Molecules 2020; 25:molecules25173897. [PMID: 32859095 PMCID: PMC7503744 DOI: 10.3390/molecules25173897] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 12/17/2022] Open
Abstract
The Hirao reaction involving the phosphinoylation or phosphonation of aryl halides by >P(O)H reagents is a P–C bond forming transformation belonging to the recently very hot topic of cross-couplings. The Pd- or Ni-catalyzed variations take place via the usual cycle including oxidative addition, ligand exchange, and reductive elimination. However, according to the literature, the nature of the transition metal catalysts is not unambiguous. In this feature article, the catalysts described for the Pd(OAc)2-promoted cases are summarized, and it is concluded that the “(HOY2P)2Pd(0)” species (Y = aryl, alkoxy) is the real catalyst. In our model, the excess of the >P(O)H reagent served as the P-ligand. During the less studied Ni(II)-catalyzed instances the “(HOY2P)(−OY2P)Ni(II)Cl−” form was found to enter the catalytic cycle. The newest conclusions involving the exact structure of the catalysts, and the mechanism for their formation explored by us were supported by our earlier experimental data and theoretical calculations.
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Henyecz R, Huszár B, Grenitzer V, Keglevich G. A Study on the Reactivity of Monosubstituted Benzenes in the MW-Assisted Pd(OAc)2-catalyzed Hirao Reaction with Ph2P(O)H and (EtO)2P(O)H Reagents. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200403170827] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reactivity order of “iodobenzene > bromobenzene > phenyl trifluoromethanesulfonate”
was established in microwave (MW)-assisted Pd(OAc)2-catalyzed P–C
coupling reactions with diphenylphosphine oxide and diethyl phosphite, where the excess
of the these >P(O)H reagents served as the reducing agent, and, via its tautomeric >P-OH
form, also as the P-ligand. The P–C coupling of Ph2P(O)H with PhBr at 120 °C took place
via an induction period, during which the active “P-Pd-P” catalyst was formed from the
Pd(II) salt and the >P(O)H species. The lower reactivity of PhBr towards Ph2P(O)H could
be promoted by the addition of 20% of KI to the reaction mixture at 120 °C, or utilizing 1
equivalent of KI after a pre-reaction with PhBr at 120-150 °C followed by the P–C coupling
at 100 °C. The reactivity of PhOTf and a bromo analogue was compared in competitive couplings with
Ph2P(O)H. Beyond this, the reactivity of Ph2P(O)H and (EtO)2P(O)H towards PhOTf was evaluated in another
competitive experiment. Increasing the scale of the P–C coupling reaction of (EtO)2P(O)H with PhBr, the
quantity for the components of the catalyst could be decreased.
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Affiliation(s)
- Réka Henyecz
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Bianka Huszár
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Viktória Grenitzer
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
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Keglevich G, Henyecz R, Mucsi Z. Experimental and Theoretical Study on the "2,2'-Bipiridyl-Ni-Catalyzed" Hirao Reaction of >P(O)H Reagents and Halobenzenes: A Ni(0) → Ni(II) or a Ni(II) → Ni(IV) Mechanism? J Org Chem 2020; 85:14486-14495. [PMID: 32407093 PMCID: PMC7684577 DOI: 10.1021/acs.joc.0c00804] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
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It was found by us that the P–C
coupling reaction of >P(O)H
reagents with PhX (X = I and Br) in the presence of NiCl2/Zn as the precursors for the assumed Ni(0) complexant together with
2,2′-bipyridine as the ligand took place only with PhI at 50/70
°C. M06-2X/6-31G(d,p)//PCM(MeCN) calculations
for the reaction of Ph2P(O)H and PhX revealed a favorable
energetics only for the loss of iodide following the oxidative addition
of PhI on the Ni(0) atom. However, the assumed transition states with
Ni(II) formed after P-ligand uptake and deprotonation could not undergo
reductive elimination meaning a “dead-end route”. Hence,
it was assumed that the initial complexation of the remaining Ni2+ ions with 2,2′-bipyridine may move the P–C
coupling forward via a Ni(II) → Ni(IV) transition. This route
was also confirmed by calculations, and this mechanism was justified
by preparative experiments carried out using NiCl2/bipyridine
in the absence of Zn. Hence, the generally accepted Ni(0) →
Ni(II) route was refuted by us, confirming the generality of the Ni(II)
→ N(IV) protocol, either in the presence of bipyridine, or
using the excess of the >P(O)H reagent as the P-ligand.
The results of the calculations on the complex forming ability of
Ni(0) and Ni(II) with 2,2′-bipyridine or the P-reagents were in accord with our mechanistic proposition.
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Affiliation(s)
- György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Réka Henyecz
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Zoltán Mucsi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
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