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Dalinger AI, Medved’ko AV, Kalinin MA, Sereda VA, Churakov AV, Vatsadze SZ. Synthesis of 2,2,5,7-tetramethyl-1,3-diazaadamantan-6-one and study of the supramolecular structure of its monohydrate. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3180-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Suslov EV, Ponomarev KY, Korchagina DV, Volcho KP, Salakhutdinov NF. Synthesis of diazaadamantanes from 1,5-dimethylbispidinone and some natural ketones. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2461-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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3
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Abstract
A series of novel Au(i)-nitrone complexes with specific catalytic properties were prepared. Furthermore, Au(i)- and Au(iii)-oxadiazole complexes were formed by a novel Au-generated nitrile-nitrone [3 + 2] cycloaddition, and the crystal structures of Au(i)-nitrones as well as the Au(i)- and Au(iii)-oxadiazole complexes were studied (X-ray). A useful one-pot Au(iii)-mediated cycloaddition method was developed for the formation of a number of dihydro-1,2,4-oxadiazoles, involving in situ formation of Au(iii)-oxadiazole complexes. The observed Au(i) and Au(iii) dual selective reactivity gives new understanding about the Au(i)- and Au(iii)-nitrone chemistry.
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Affiliation(s)
- Helgi Freyr Jónsson
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway.
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4
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Sieste S, Lifincev I, Stein N, Wagner G. Synthesis, characterisation and in vitro cytotoxicity of mixed ligand Pt(ii) oxadiazoline complexes with hexamethylenetetramine and 7-nitro-1,3,5-triazaadamantane. Dalton Trans 2017; 46:12226-12238. [PMID: 28875218 DOI: 10.1039/c7dt02406a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
trans-Platinum(ii) oxadiazoline complexes with 7-nitro-1,3,5-triazaadamantane (NO2-TAA) or hexamethylenetetramine (hmta) ligands have been synthesised from trans-[PtCl2(PhCN)2] via cycloaddition of nitrones to one of the coordinated nitriles, followed by exchange of the other nitrile by NO2-TAA or hmta. Stoichiometric control allows for the selective synthesis of mono- and dinuclear complexes where 7-NO2TAA and hmta act as mono- and bidentate ligands, respectively. Precursors and the target complexes trans-[PtCl2(hmta)(oxadiazoline)], trans-[PtCl2(NO2-TAA)(oxadiazoline)] and trans-[{PtCl2(oxadiazoline)}2(hmta)] were characterised by elemental analysis, IR and multinuclear (1H, 13C, 195Pt) NMR spectroscopy. DFT (B3LYP/6-31G*/LANL08) and AIM calculations suggest a stronger bonding of hmta with the [PtCl2(oxadiazoline)] fragment, in agreement with the experimentally observed reactivity in the ligand exchange (hmta > 7-NO2TAA). Replacement of the nitrile by hmta is predicted to be more exothermic than that with 7-NO2-TAA, although the activation barriers are similar. Protonation of the non-coordinated N atoms is anticipated to weaken the Pt-N bond and lower the activation barrier for ligand exchange. This effect might help activate these compounds in a slightly acidic environment such as some tumour tissues. Ten of the new compounds were tested for their in vitro cytotoxicity in the human cancer cell lines HeLa and A549. Some of the mononuclear complexes are more potent than cisplatin, and their activity is still high in A549 where cisplatin shows little effect. The dinuclear complexes are inactive, presumably due to their lipophilicity and reduced solubility in water.
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Affiliation(s)
- Stefanie Sieste
- Institute of Inorganic Chemistry, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Irina Lifincev
- Institute of Inorganic Chemistry, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Nina Stein
- Institute of Inorganic Chemistry, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Gabriele Wagner
- Institute of Inorganic Chemistry, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany and Department of Natural Sciences, University of Chester, Thornton Science Park, Pool Lane, Ince, Chester, CH2 4NU, UK.
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5
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Wagner G, Horton PN, Coles SJ. Mononuclear Transition Metal Complexes of 7-Nitro-1,3,5-Triazaadamantane. ChemistrySelect 2016. [DOI: 10.1002/slct.201600502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gabriele Wagner
- Department of Natural Sciences; University of Chester; Thornton Science Park; Pool Lane, Ince Chester CH2 4NU United Kingdom
| | - Peter N. Horton
- National Crystallography Service, School of Chemistry; University of Southampton; Southampton SO17 1BJ United Kingdom
| | - Simon J. Coles
- National Crystallography Service, School of Chemistry; University of Southampton; Southampton SO17 1BJ United Kingdom
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Boyarskiy VP, Bokach NA, Luzyanin KV, Kukushkin VY. Metal-Mediated and Metal-Catalyzed Reactions of Isocyanides. Chem Rev 2015; 115:2698-779. [DOI: 10.1021/cr500380d] [Citation(s) in RCA: 388] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Vadim P. Boyarskiy
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Nadezhda A. Bokach
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Konstantin V. Luzyanin
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Vadim Yu. Kukushkin
- Institute of Chemistry, Saint Petersburg State University, 198504 Stary Petergof, Russian Federation
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Chukwu JU, López C, González A, Font-Bardía M, Calvet MT, Messeguer R, Calvis C. Pd(II) complexes with N-substituted pyrazoles as ligands. The influence of the R group [OMe versus NMe2] of [1-{R–(CH2)2–}-3,5-Ph2–(C3HN2)] on their cytotoxic activity on breast cancer cell lines. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.04.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Kritchenkov AS, Lavnevich LV, Starova GL, Bokach NA, Kalibabchuk VA. Dichloridobis[3-(4-meth-oxy-phen-yl)-2-methyl-5-(piperidin-1-yl)-2,3-di-hydro-1,2,4-oxa-diazole-κN (4)]platinum(II). Acta Crystallogr Sect E Struct Rep Online 2013; 69:m435-6. [PMID: 24109266 PMCID: PMC3793679 DOI: 10.1107/s1600536813018059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Accepted: 07/01/2013] [Indexed: 11/11/2022]
Abstract
In title compound, [PtCl2(C15H21N3O2)2], the Pt(II) cation, located on an inversion center, is coordinated by two Cl(-) anions and two 3-(4-meth-oxy-phen-yl)-2-methyl-5-(piperidin-1-yl)-2,3-di-hydro-1,2,4-oxa-diazole ligands in a distorted Cl2N2 square-planar geometry. The di-hydro-oxa-diazole and piperidine rings display envelope (with the non-coordinating N atom as the flap atom) and chair conformations, respectively. In the crystal, weak C-H⋯Cl hydrogen bonds link the mol-ecules into supra-molecular chains running along the b axis. The piperidine ring is disordered over two positions with the occupancy ratio of 0.528 (4):0.472 (4).
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Affiliation(s)
- Andreii S Kritchenkov
- Department of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
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Burya SJ, Palmer AM, Gallucci JC, Turro C. Photoinduced Ligand Exchange and Covalent DNA Binding by Two New Dirhodium Bis-Amidato Complexes. Inorg Chem 2012; 51:11882-90. [DOI: 10.1021/ic3017886] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Scott J. Burya
- Department
of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United
States
| | - Alycia M. Palmer
- Department
of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United
States
| | - Judith C. Gallucci
- Department
of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United
States
| | - Claudia Turro
- Department
of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United
States
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10
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Li Z, Jiang YY, Yeagley AA, Bour JP, Liu L, Chruma JJ, Fu Y. Mechanism of the Pd-catalyzed decarboxylative allylation of α-imino esters: decarboxylation via free carboxylate ion. Chemistry 2012; 18:14527-38. [PMID: 23002017 DOI: 10.1002/chem.201201425] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 07/09/2012] [Indexed: 11/09/2022]
Abstract
The Pd-catalyzed decarboxylative allylation of α-(diphenylmethylene)imino esters (1) or allyl diphenylglycinate imines (2) is an efficient method to construct new C(sp(3))-C(sp(3)) bonds. The detailed mechanism of this reaction was studied by theoretical calculations [ONIOM(B3LYP/LANL2DZ+p:PM6)] combined with experimental observations. The overall catalytic cycle was found to consist of three steps: oxidative addition, decarboxylation, and reductive allylation. The oxidative addition of 1 to [(dba)Pd(PPh(3))(2)] (dba = dibenzylideneacetone) produces an allylpalladium cation and a carboxylate anion with a low activation barrier of +9.1 kcal mol(-1). The following rate-determining decarboxylation proceeds via a solvent-exposed α-imino carboxylate anion rather than an O-ligated allylpalladium carboxylate with an activation barrier of +22.7 kcal mol(-1). The 2-azaallyl anion generated by this decarboxylation attacks the face of the allyl ligand opposite to the Pd center in an outer-sphere process to produce major product 3, with a lower activation barrier than that of the minor product 4. A positive linear Hammett correlation [ρ = 1.10 for the PPh(3) ligand] with the observed regioselectivity (3 versus 4) supports an outer-sphere pathway for the allylation step. When Pd combined with the bis(diphenylphosphino)butane (dppb) ligand is employed as a catalyst, the decarboxylation still proceeds via the free carboxylate anion without direct assistance of the cationic Pd center. Consistent with experimental observations, electron-withdrawing substituents on 2 were calculated to have lower activation barriers for decarboxylation and, thus, accelerate the overall reaction rates.
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Affiliation(s)
- Zhe Li
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
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Mindich AL, Bokach NA, Dolgushin FM, Haukka M, Lisitsyn LA, Zhdanov AP, Zhizhin KY, Miltsov SA, Kuznetsov NT, Kukushkin VY. 1,3-Dipolar Cycloaddition of Nitrones to a Nitrile Functionality in closo-Decaborate Clusters: A Novel Reactivity Mode for the Borylated C≡N Group. Organometallics 2012. [DOI: 10.1021/om200993f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Aleksey L. Mindich
- Department of Chemistry, Saint-Petersburg State University, Universitetsky Pr. 26, 198504 Stary
Petergof, Russian Federation
| | - Nadezhda A. Bokach
- Department of Chemistry, Saint-Petersburg State University, Universitetsky Pr. 26, 198504 Stary
Petergof, Russian Federation
| | - Fedor M. Dolgushin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str. 28, 119991 Moscow, Russian Federation
| | - Matti Haukka
- Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland
| | - Leonid A. Lisitsyn
- Department of Chemistry, Saint-Petersburg State University, Universitetsky Pr. 26, 198504 Stary
Petergof, Russian Federation
| | - Andrey P. Zhdanov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Pr., 119991 Moscow, Russian Federation
| | - Konstantin Yu. Zhizhin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Pr., 119991 Moscow, Russian Federation
| | - Serguei A. Miltsov
- Department of Chemistry, Saint-Petersburg State University, Universitetsky Pr. 26, 198504 Stary
Petergof, Russian Federation
| | - Nikolay T. Kuznetsov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Pr., 119991 Moscow, Russian Federation
| | - Vadim Yu. Kukushkin
- Department of Chemistry, Saint-Petersburg State University, Universitetsky Pr. 26, 198504 Stary
Petergof, Russian Federation
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi
Pr. 31, 199004 Saint-Petersburg, Russian Federation
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López C, González A, Bosque R, Basu PK, Font-Bardía M, Calvet T. Platinum(ii) and palladium(ii) complexes derived from 1-ferrocenylmethyl-3,5-diphenylpyrazole. Coordination, cyclometallation or transannulation? RSC Adv 2012. [DOI: 10.1039/c1ra01080h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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13
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1,3-Dipolar cycloaddition of nitrone-type dipoles to uncomplexed and metal-bound substrates bearing the CN triple bond. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.07.001] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Bokach NA, Balova IA, Haukka M, Kukushkin VY. Highly Stereoselective 1,3-Dipolar Cycloaddition of Nitrones to (Nitrile)2PtII Species Furnishing Diastereomerically Pure 2,3-Dihydro-1,2,4-oxadiazole Ligands. Organometallics 2011. [DOI: 10.1021/om100957b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Nadezhda A. Bokach
- Department of Chemistry, St. Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Irina A. Balova
- Department of Chemistry, St. Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Matti Haukka
- Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80101, Joensuu, Finland
| | - Vadim Yu. Kukushkin
- Department of Chemistry, St. Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russian Federation
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15
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Suntharalingam K, Vilar R. Interaction of metal complexes with nucleic acids. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1ic90027g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Kritchenkov AS, Bokach NA, Haukka M, Kukushkin VY. Unexpectedly efficient activation of push–pull nitriles by a PtII center toward dipolar cycloaddition of Z-nitrones. Dalton Trans 2011; 40:4175-82. [DOI: 10.1039/c0dt01689f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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