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Bresciani G, Bortoluzzi M, Marchetti F, Pampaloni G. Titanium(IV) Alkoxide‐Carbamate Complexes: Synthesis and Catalytic Potential in H2O2‐Oxidation of Organic Sulfides. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Giulio Bresciani
- University of Pisa Department of Chemistry and Industrial Chemistry Via Giuseppe Moruzzi, 13 56124 Pisa ITALY
| | - Marco Bortoluzzi
- Ca' Foscari University of Venice: Universita Ca' Foscari Department of Molecular Science and Nanosystems ITALY
| | - Fabio Marchetti
- University of Pisa: Universita degli Studi di Pisa Department of Chemistry and Industrial Chemistry ITALY
| | - Guido Pampaloni
- University of Pisa: Universita degli Studi di Pisa Department of Chemistry and Industrial Chemistry ITALY
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Bresciani G, Busto N, Ceccherini V, Bortoluzzi M, Pampaloni G, Garcia B, Marchetti F. Screening the biological properties of transition metal carbamates reveals gold(I) and silver(I) complexes as potent cytotoxic and antimicrobial agents. J Inorg Biochem 2021; 227:111667. [PMID: 34826692 DOI: 10.1016/j.jinorgbio.2021.111667] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/14/2021] [Accepted: 11/14/2021] [Indexed: 12/29/2022]
Abstract
We report a screening study aimed to assess for the first time the air- and water-stability and the biological potential of simple metal-carbamates. These molecular metallic species are based on elements belonging to the groups 4-5, 7-9 and 11, and tin, and are easily available from inexpensive reagents. Complexes [Ag(O2CNEt2)] (13-Ag) and [Au(O2CNMe2)(PPh3)] (14-Au) resulted substantially stable in aqueous media and exhibited a potent in vitro cytotoxicity. Especially 13-Ag revealed a significant selectivity against the A549 lung adenocarcinoma and the A2780 ovarian cancer cell lines with respect to the noncancerous HEK293 cell line. Generation of ROS (reactive oxygen species) and mitochondrial membrane depolarization were recognized for 13-Ag and 14-Au; notwithstanding, the cell death mechanism is different in the two cases: apoptosis and cell cycle arrest in G0/G1 phase for 13-Ag; necroptosis and cell cycle arrest in S phase for 14-Au. Both 13-Ag and 14-Au are endowed with antibacterial activity, which is relatively stronger for 13-Ag towards Gram negative and for 14-Au towards Gram positive strains, respectively.
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Affiliation(s)
- Giulio Bresciani
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via G. Moruzzi 13, I-56124 Pisa, Italy
| | - Natalia Busto
- University of Burgos, Department of Chemistry, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Valentina Ceccherini
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via G. Moruzzi 13, I-56124 Pisa, Italy
| | - Marco Bortoluzzi
- University of Venezia "Ca' Foscari", Department of Molecular Science and Nanosystems, Via Torino 155, I-30170 Mestre (VE), Italy
| | - Guido Pampaloni
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via G. Moruzzi 13, I-56124 Pisa, Italy.
| | - Begoña Garcia
- University of Burgos, Department of Chemistry, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Fabio Marchetti
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via G. Moruzzi 13, I-56124 Pisa, Italy.
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Bresciani G, Zacchini S, Marchetti F, Pampaloni G. Non-precious metal carbamates as catalysts for the aziridine/CO 2 coupling reaction under mild conditions. Dalton Trans 2021; 50:5351-5359. [PMID: 33881087 DOI: 10.1039/d1dt00525a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The catalytic potential of a large series of easily available metal carbamates (based on thirteen different non-precious metal elements) was explored for the first time in the coupling reaction between 2-aryl-aziridines and carbon dioxide, working under solventless and ambient conditions and using tetraalkylammonium halides as co-catalysts. The straightforward synthesis of novel [NbCl3(O2CNEt2)2], NbCl, and [NbBr3(O2CNEt2)2], NbBr, is reported. The niobium complex NbCl, in combination with NBu4I, emerged as the best catalyst of the overall series to convert aziridines with small N-alkyl substituents into the corresponding 5-aryl-oxazolidin-2-ones.
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Affiliation(s)
- Giulio Bresciani
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy. and CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy
| | - Stefano Zacchini
- CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy and Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy. and CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy
| | - Guido Pampaloni
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy. and CIRCC, via Celso Ulpiani 27, I-70126 Bari, Italy
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Catalytic alcohol oxidation using cationic Schiff base manganeseIII complexes with flexible diamino bridge. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114873] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Bresciani G, Biancalana L, Pampaloni G, Marchetti F. Recent Advances in the Chemistry of Metal Carbamates. Molecules 2020; 25:E3603. [PMID: 32784784 PMCID: PMC7465543 DOI: 10.3390/molecules25163603] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 07/31/2020] [Accepted: 08/03/2020] [Indexed: 12/12/2022] Open
Abstract
Following a related review dating back to 2003, the present review discusses in detail the various synthetic, structural and reactivity aspects of metal species containing one or more carbamato ligands, representing a large family of compounds across all the periodic table. A preliminary overview is provided on the reactivity of carbon dioxide with amines, and emphasis is given to recent findings concerning applications in various fields.
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Affiliation(s)
| | | | - Guido Pampaloni
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy; (G.B.); (L.B.)
| | - Fabio Marchetti
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy; (G.B.); (L.B.)
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Bresciani G, Bortoluzzi M, Marchetti F, Pampaloni G. Iron(III) N,N-Dialkylcarbamate-Catalyzed Formation of Cyclic Carbonates from CO 2 and Epoxides under Ambient Conditions by Dynamic CO 2 Trapping as Carbamato Ligands. CHEMSUSCHEM 2018; 11:2737-2743. [PMID: 29897168 DOI: 10.1002/cssc.201801065] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Easily available and inexpensive FeIII carbamates were employed in the solvent-free synthesis of a series of cyclic carbonates from epoxides and CO2 at room temperature and atmospheric pressure, in the presence of a cocatalyst. Different experimental conditions (type and concentration of catalyst and cocatalyst, as well as reaction time) were investigated: Fe(O2 CNEt2 )3 and NBu4 Br acted as the best catalyst/cocatalyst combination, allowing the formation of propylene carbonate and 1,2-butylene carbonate with quantitative yield and selectivity in 24 h. According to NMR and DFT studies, the reaction proceeds with the dynamic trapping of carbon dioxide as a carbamato ligand.
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Affiliation(s)
- Giulio Bresciani
- Università di Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124, Pisa, Italy
- CIRCC, via Celso Ulpiani 27, I-, 70126, Bari, Italy
| | - Marco Bortoluzzi
- CIRCC, via Celso Ulpiani 27, I-, 70126, Bari, Italy
- Ca' Foscari Università di Venezia, Dipartimento di Scienze Molecolari e Nanosistemi, Via Torino 155, I-, 30170, Mestre (VE), Italy
| | - Fabio Marchetti
- Università di Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124, Pisa, Italy
- CIRCC, via Celso Ulpiani 27, I-, 70126, Bari, Italy
| | - Guido Pampaloni
- Università di Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124, Pisa, Italy
- CIRCC, via Celso Ulpiani 27, I-, 70126, Bari, Italy
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