1
|
Fang J, Bekkouch O, Zeiser G, Zubchuk Y, Bizet V, Blanchard N, Evano G. Copper-Catalyzed, Ligand-Controlled N(sp 3)- or N(sp)-Selective Arylation of Cyanamides. Org Lett 2023; 25:6446-6451. [PMID: 37610917 DOI: 10.1021/acs.orglett.3c02622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Cyanamides possess both nucleophilic and electrophilic centers, and their arylation reactions are known to proceed at N(sp3) and C(sp) sites, leading to N-aryl cyanamides or amidines. N(sp) selectivity has also been reported only in the presence of amines, thus leading to guanidines. Herein, we report a general copper-catalyzed ligand-controlled Chan-Lam-Evans arylation of cyanamides proceeding regioselectively at the N(sp3) or N(sp) atoms and leading to either N-aryl cyanamides or dissymmetric carbodiimides. The nature of the ligand, either a bipyridine or a diamine, controls the product distribution and thus offers a divergent entry to useful building blocks from readily available cyanamides.
Collapse
Affiliation(s)
- Jiaqi Fang
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000 Mulhouse, France
| | - Oumaïma Bekkouch
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Guilhem Zeiser
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Yurii Zubchuk
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000 Mulhouse, France
| | - Vincent Bizet
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000 Mulhouse, France
| | - Nicolas Blanchard
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000 Mulhouse, France
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| |
Collapse
|
2
|
Palluccio TD, Germain ME, Marazzi M, Temprado M, Silvia JS, Müller P, Cummins CC, Davis JV, Serafim LF, Captain B, Hoff CD, Rybak-Akimova EV. Binding of Nitriles and Isonitriles to V(III) and Mo(III) Complexes: Ligand vs Metal Controlled Mechanism. Inorg Chem 2023. [PMID: 37377337 DOI: 10.1021/acs.inorgchem.3c00595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
The synthesis and structures of nitrile complexes of V(N[tBu]Ar)3, 2 (Ar = 3,5-Me2C6H3), are described. Thermochemical and kinetic data for their formation were determined by variable temperature Fourier transform infrared (FTIR), calorimetry, and stopped-flow techniques. The extent of back-bonding from metal to coordinated nitrile indicates that electron donation from the metal to the nitrile plays a less prominent role for 2 than for the related complex Mo(N[tBu]Ar)3, 1. Kinetic studies reveal similar rate constants for nitrile binding to 2, but the activation parameters depend critically on the nature of R in RCN. Activation enthalpies range from 2.9 to 7.2 kcal·mol-1, and activation entropies from -9 to -28 cal·mol-1·K-1 in an opposing manner. Density functional theory (DFT) calculations provide a plausible explanation supporting the formation of a π-stacking interaction between a pendant arene of the metal anilide of 2 and the arene substituent on the incoming nitrile in favorable cases. Data for ligand binding to 1 do not exhibit this range of activation parameters and are clustered in a small area centered at ΔH‡ = 5.0 kcal·mol-1 and ΔS‡ = -26 cal·mol-1·K-1. Computational studies are in agreement with the experimental data and indicate a stronger dependence on electronic factors associated with the change in spin state upon ligand binding to 1.
Collapse
Affiliation(s)
- Taryn D Palluccio
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Meaghan E Germain
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Marco Marazzi
- Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Universidad de Alcalá, Alcalá de Henares, Madrid 28805, Spain
- Instituto de Investigación Química 'Andrés M. del Río'' (IQAR), Universidad de Alcalá, Alcalá de Henares, Madrid 28805, Spain
| | - Manuel Temprado
- Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Universidad de Alcalá, Alcalá de Henares, Madrid 28805, Spain
- Instituto de Investigación Química 'Andrés M. del Río'' (IQAR), Universidad de Alcalá, Alcalá de Henares, Madrid 28805, Spain
| | - Jared S Silvia
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Peter Müller
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Christopher C Cummins
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jack V Davis
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Leonardo F Serafim
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Burjor Captain
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Carl D Hoff
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Elena V Rybak-Akimova
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| |
Collapse
|
3
|
Novel Highly Efficient Green and Reusable Cu(II)/Chitosan-Based Catalysts for the Sonogashira, Buchwald, Aldol, and Dipolar Cycloaddition Reactions. Catalysts 2023. [DOI: 10.3390/catal13010203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
In this study, new Cu(II)/chitosan-based systems were designed via (i) the treatment of chitosan with sodium sulfate (1a) or sodium acetate (1b); (ii) the coating of 1a or 2a with a sodium hyaluronate layer (2a and 2b, correspondingly); (iii) the treatment of a cholesterol–chitosan conjugate with sodium sulfate (3a) or sodium acetate (3b); and (iv) the succination of 1a and 1b to afford 4a and 4b or the succination of 2a and 2b to yield 5a and 5b. The catalytic properties of the elaborated systems in various organic transformations were evaluated. The use of copper sulfate as the source of Cu2+ ions results in the formation of nanoparticles, while the use of copper acetate leads to the generation of conventional coarse-grained powder. Cholesterol-containing systems have proven to be highly efficient catalysts for the cross-coupling reactions of different types (e.g., Sonogashira, Buchwald–Hartwig, and Chan–Lam types); succinated systems coated with a layer of hyaluronic acid are promising catalysts for the aldol reaction; systems containing inorganic copper(II) salt nanoparticles are capable of catalyzing the nitrile-oxide-to-nitrile 1,3-dipolar cycloaddition. The elaborated catalytic systems efficiently catalyze the aforementioned reactions in the greenest solvent available, i.e., water, and the processes could be conducted in air. The studied catalytic reactions proceed selectively, and the isolation of the product does not require column chromatography. The product is separated from the catalyst by simple filtration or centrifugation.
Collapse
|
4
|
Toikka YN, Toikka YN, Mereshchenko AS, Starova GL, Bokach NA. Synthesis, Structure, and Luminescent Properties of Copper(I) Iodide Clusters Bearing Dialkylcyanamide Ligands. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s107036322208014x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
5
|
Copper(II) Prevents the Saccarine-Dialkylcyanamide Coupling by Forming Mononuclear (Saccharinate)(Dialkylcyanamide)copper(II) Complexes. INORGANICS 2021. [DOI: 10.3390/inorganics9090069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The reaction in the system CuII/sacNa(H)/NCNR2 (sacNa(H) = sodium saccharinate (saccharin); R = Me, Et) results in the formation of the complexes [Cu(sac)2(NCNR2)(H2O)2] (R = Me 1, Et 2) instead of the expected products derived from the saccharin–cyanamide coupling. Complexes 1, 2, and hydrate 1·2H2O were characterized by IR, AAS (Cu%), TGA, and also by single-crystal X-ray diffraction for 1 and 1·2H2O. An integrated computational study of model structure 1 in the gas phase demonstrates that the Cu–Ncyanamide and Cu–Nsac coordination bonds exhibited a single bond character, polarized toward the N atom and almost purely electrostatic, with the calculated vertical total energies for the Cu–Ncyanamide and Cu–Nsac of 43.6 and 156.4 kcal/mol, respectively. These data confirmed that the copper(II) completely blocks the nucleophilic centers of ligands via coordination, thus preventing the saccharin–cyanamide coupling.
Collapse
|
6
|
Crochet P, Cadierno V. Access to
α
‐ and
β
‐Hydroxyamides and Ureas Through Metal‐Catalyzed C≡N Bond Hydration and Transfer Hydration Reactions. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pascale Crochet
- Departamento de Química Orgánica e Inorgánica Universidad de Oviedo Julián Clavería 8 33006 Oviedo Spain
| | - Victorio Cadierno
- Departamento de Química Orgánica e Inorgánica Universidad de Oviedo Julián Clavería 8 33006 Oviedo Spain
| |
Collapse
|
7
|
Yamamoto Y. Theoretical Study of the Mechanism of Palladium(0)‐Catalyzed Intramolecular [2+2+2] Cycloaddition of Ester‐Substituted Alkynes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences Graduate School of Pharmaceutical Sciences Nagoya University Chikusa 464‐8601 Nagoya Japan
| |
Collapse
|
8
|
Zheng LL, Wang JF, Wang J, Zhou AJ, Liao CX, Hu S. Cu2+-promoted nucleophilic addition of pyrazole to cyano group. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
9
|
González-Fernández R, Álvarez D, Crochet P, Cadierno V, Menéndez MI, López R. Catalytic hydration of cyanamides with phosphinous acid-based ruthenium( ii) and osmium( ii) complexes: scope and mechanistic insights. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00523a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The catalytic hydration of cyanamides to ureas has been accomplished employing, for the first time, homogeneous catalysts, i.e. the phosphinous acid complexes [MCl2(η6-p-cymene)(PMe2OH)] (M = Ru, Os).
Collapse
Affiliation(s)
- Rebeca González-Fernández
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC)
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Facultad de Química
| | - Daniel Álvarez
- Departamento de Química Física y Analítica
- Universidad de Oviedo
- E-33006 Oviedo
- Spain
| | - Pascale Crochet
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC)
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Facultad de Química
| | - Victorio Cadierno
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC)
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Facultad de Química
| | - M. Isabel Menéndez
- Departamento de Química Física y Analítica
- Universidad de Oviedo
- E-33006 Oviedo
- Spain
| | - Ramón López
- Departamento de Química Física y Analítica
- Universidad de Oviedo
- E-33006 Oviedo
- Spain
| |
Collapse
|
10
|
Zelenkov LE, Kuznetsov ML, Andrusenko EV, Avdontceva MS, Starova GL, Bokach NA, Kukushkin VY. Nickel( ii)-mediated cyanamide–pyrazole coupling highlights distinct reactivity of NCNR 2 and NCR nitrile ligands. NEW J CHEM 2020. [DOI: 10.1039/d0nj00704h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nickel(ii) center efficiently promotes the cyanamide–pyrazole coupling to give bis-chelate and tris-chelate products. The formation of the tris-chelate product for dialkylcyanamides is thermodynamically favorable.
Collapse
Affiliation(s)
- Lev E. Zelenkov
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
| | - Maxim L. Kuznetsov
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
- Centro de Química Estrutural
| | - Elena V. Andrusenko
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
| | - Margarita S. Avdontceva
- Institute of Earth Sciences
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
| | - Galina L. Starova
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
| | - Nadezhda A. Bokach
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
| | - Vadim Yu. Kukushkin
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
| |
Collapse
|
11
|
Albertin G, Antoniutti S, Castro J. Preparation and Reactivity of Mixed-Ligands Hydride Complexes [RuHCl(CO)(PPh 3
) 2
{P(O R
) 3
}]. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi DSMN; Università Ca' Foscari Venezia, Campus Scientifico; Via Torino 155 30172 Venezia Mestre Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi DSMN; Università Ca' Foscari Venezia, Campus Scientifico; Via Torino 155 30172 Venezia Mestre Italy
| | - Jesús Castro
- Departamento de Química Inorgánica; Facultade de Química; Universidade de Vigo; Edificio de Ciencias Experimentais 36310 Vigo Galicia Spain
| |
Collapse
|
12
|
Dubovtsev AY, Ivanov DM, Dabranskaya U, Bokach NA, Kukushkin VY. Saccharin guanidination via facile three-component “two saccharins-one dialkylcyanamide” integration. NEW J CHEM 2019. [DOI: 10.1039/c9nj02656h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Novel three-component “two saccharins-one dialkylcyanamide” integration.
Collapse
Affiliation(s)
| | - Daniil M. Ivanov
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | | | - Nadezhda A. Bokach
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | | |
Collapse
|
13
|
Melekhova AA, Novikov AS, Dubovtsev AY, Zolotarev AA, Bokach NA. Tris(3,5-dimethylpyrazolyl)methane copper(I) complexes featuring one disubstituted cyanamide ligand. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
14
|
Kinzhalov MA, Parfenova SN, Novikov AS, Katlenok EA, Puzyk MV, Avdontceva MS, Bokach NA. Cyclometalated Iridium(III) Complexes Featuring Disubstituted Cyanamides. ChemistrySelect 2018. [DOI: 10.1002/slct.201802900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Mikhail A. Kinzhalov
- Saint Petersburg State University7/9 Universitetskaya Nab., Saint Petersburg 199034 Russian Federation
| | - Suzanna N. Parfenova
- Saint Petersburg State University7/9 Universitetskaya Nab., Saint Petersburg 199034 Russian Federation
| | - Alexander S. Novikov
- Saint Petersburg State University7/9 Universitetskaya Nab., Saint Petersburg 199034 Russian Federation
| | - Evgeniy A. Katlenok
- Scientific-research laboratory of Ltd “THP”, Moscow highway 13, Saint Petersburg 196158 Russian Federation
| | - Mikhail V. Puzyk
- Herzen State Pedagogical University, Nab. reki Moiki 48 Saint Petersburg 191186 Russian Federation
| | - Margarita S. Avdontceva
- Saint Petersburg State University7/9 Universitetskaya Nab., Saint Petersburg 199034 Russian Federation
| | - Nadezhda A. Bokach
- Saint Petersburg State University7/9 Universitetskaya Nab., Saint Petersburg 199034 Russian Federation
| |
Collapse
|
15
|
Albertin G, Antoniutti S, Castro J. Preparation of Diethylcyanamide and Cyanoguanidine Complexes of Iridium. ChemistrySelect 2018. [DOI: 10.1002/slct.201802319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca‘ Foscari Venezia; Via Torino 155 30172 Mestre Venezia Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca‘ Foscari Venezia; Via Torino 155 30172 Mestre Venezia Italy
| | - Jesús Castro
- Departamento de Química Inorgánica; Universidade de Vigo, Facultade de Química, Edificio de Ciencias Experimentais; 36310 Vigo (Galicia) Spain
| |
Collapse
|
16
|
Škoch K, Císařová I, Štěpnička P. Selective Gold-Catalysed Synthesis of Cyanamides and 1-Substituted 1H
-Tetrazol-5-Amines from Isocyanides. Chemistry 2018; 24:13788-13791. [DOI: 10.1002/chem.201803252] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Karel Škoch
- Department of Inorganic Chemistry; Faculty of Science; Charles University; Hlavova 2030 12840 Prague Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University; Hlavova 2030 12840 Prague Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry; Faculty of Science; Charles University; Hlavova 2030 12840 Prague Czech Republic
| |
Collapse
|
17
|
Yunusova S, Bolotin DS, Suslonov VV, Vovk MA, Tolstoy PM, Kukushkin VY. 3-Dialkylamino-1,2,4-triazoles via Zn II-Catalyzed Acyl Hydrazide-Dialkylcyanamide Coupling. ACS OMEGA 2018; 3:7224-7234. [PMID: 31458884 PMCID: PMC6644373 DOI: 10.1021/acsomega.8b01047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 06/15/2018] [Indexed: 05/08/2023]
Abstract
Zinc(II)-catalyzed (10 mol % ZnCl2) coupling of acyl hydrazides and dialkylcyanamides in ethanol leads to 3-dialkylamino-1,2,4-triazoles (76-99%; 17 examples). This reaction represents a novel, straightforward, and high-yielding approach to practically important 3-NR2-1,2,4-triazoles, which utilizes commercially available and/or easily generated substrates. Seventeen new 3-NR2-1,2,4-triazoles were characterized by HRESI+-MS and IR, 1H, and 13C{1H} NMR spectroscopies and five species additionally by single-crystal X-ray diffraction (XRD). The ZnII-catalyzed reaction proceeds via initial generation of the [Zn{RC(=O)NHNH2}3](ZnCl4) complexes (exemplified by isolation of the complex with R = Ph, 76%; characterized by HRESI+-MS, IR, CP-MAS TOSS 13C{1H} NMR, and XRD). Electronic effects of substituents at the acyl hydrazide moiety do not significantly affect the reaction rate and the yield of the target triazoles, whereas the steric hindrances reduce the reaction rate without affecting the yield of the heterocycles.
Collapse
Affiliation(s)
- Sevilya
N. Yunusova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
| | - Dmitrii S. Bolotin
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
- E-mail: (D.S.B.)
| | - Vitalii V. Suslonov
- Center for X-ray Diffraction
Studies, Center for Magnetic Resonance, Saint Petersburg
State University, Universitetskii
Pr., 26, Saint Petersburg 199034, Russian Federation
| | - Mikhail A. Vovk
- Center for X-ray Diffraction
Studies, Center for Magnetic Resonance, Saint Petersburg
State University, Universitetskii
Pr., 26, Saint Petersburg 199034, Russian Federation
| | - Peter M. Tolstoy
- Center for X-ray Diffraction
Studies, Center for Magnetic Resonance, Saint Petersburg
State University, Universitetskii
Pr., 26, Saint Petersburg 199034, Russian Federation
| | - Vadim Yu. Kukushkin
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
- E-mail: (V.Y.K.)
| |
Collapse
|
18
|
|
19
|
Bolotin DS, Bokach NA, Demakova MY, Kukushkin VY. Metal-Involving Synthesis and Reactions of Oximes. Chem Rev 2017; 117:13039-13122. [PMID: 28991449 DOI: 10.1021/acs.chemrev.7b00264] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This review classifies and summarizes the past 10-15 years of advancements in the field of metal-involving (i.e., metal-mediated and metal-catalyzed) reactions of oximes. These reactions are diverse in nature and have been employed for syntheses of oxime-based metal complexes and cage-compounds, oxime functionalizations, and the preparation of new classes of organic species, in particular, a wide variety of heterocyclic systems spanning small 3-membered ring systems to macroheterocycles. This consideration gives a general outlook of reaction routes, mechanisms, and driving forces and underlines the potential of metal-involving conversions of oxime species for application in various fields of chemistry and draws attention to the emerging putative targets.
Collapse
Affiliation(s)
- Dmitrii S Bolotin
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| | - Nadezhda A Bokach
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| | - Marina Ya Demakova
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| | - Vadim Yu Kukushkin
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| |
Collapse
|
20
|
|
21
|
Melekhova AA, Novikov AS, Rostovskii NV, Sakharov PA, Panikorovskii TL, Bokach NA. Open-chain hemiketal is stabilized by coordination to a copper (II). INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.03.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Recent Advances in Cyanamide Chemistry: Synthesis and Applications. Molecules 2017; 22:molecules22040615. [PMID: 28417938 PMCID: PMC6154562 DOI: 10.3390/molecules22040615] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 04/06/2017] [Accepted: 04/07/2017] [Indexed: 11/17/2022] Open
Abstract
The application of alkyl and aryl substituted cyanamides in synthetic chemistry has diversified multi-fold in recent years. In this review, we discuss recent advances (since 2012) in the chemistry of cyanamides and detail their application in cycloaddition chemistry, aminocyanation reactions, as well as electrophilic cyanide-transfer agents and their unique radical and coordination chemistry.
Collapse
|
23
|
Bolotin DS, Demakova MY, Daines EA, Avdontseva MS, Zhdanov AP, Zhizhin KY, Kuznetsov NT. Nucleophilic addition of aromatic amide oximes to [2-B10H9NCC2H5]– anion. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s107036321701008x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
24
|
Andrusenko EV, Kabin EV, Novikov AS, Bokach NA, Starova GL, Kukushkin VY. Metal-mediated generation of triazapentadienate-terminated di- and trinuclear μ2-pyrazolate NiIIspecies and control of their nuclearity. NEW J CHEM 2017. [DOI: 10.1039/c6nj02962k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nuclearity control of nickel(ii)–azole systems for the generation of well-defined (azolate)2NiIIspecies.
Collapse
Affiliation(s)
- Elena V. Andrusenko
- Institute of Chemistry
- Saint Petersburg State University
- Universitetskaya Nab. 7/9
- 199034
- Saint Petersburg
| | - Evgeniy V. Kabin
- Institute of Chemistry
- Saint Petersburg State University
- Universitetskaya Nab. 7/9
- 199034
- Saint Petersburg
| | - Alexander S. Novikov
- Institute of Chemistry
- Saint Petersburg State University
- Universitetskaya Nab. 7/9
- 199034
- Saint Petersburg
| | - Nadezhda A. Bokach
- Institute of Chemistry
- Saint Petersburg State University
- Universitetskaya Nab. 7/9
- 199034
- Saint Petersburg
| | - Galina L. Starova
- Institute of Chemistry
- Saint Petersburg State University
- Universitetskaya Nab. 7/9
- 199034
- Saint Petersburg
| | - Vadim Yu. Kukushkin
- Institute of Chemistry
- Saint Petersburg State University
- Universitetskaya Nab. 7/9
- 199034
- Saint Petersburg
| |
Collapse
|
25
|
Melekhova AA, Novikov AS, Panikorovskii TL, Bokach NA, Kukushkin VY. A novel family of homoleptic copper(i) complexes featuring disubstituted cyanamides: a combined synthetic, structural, and theoretical study. NEW J CHEM 2017. [DOI: 10.1039/c7nj02798b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homoleptic copper(i) complexes featuring disubstituted cyanamides were obtained and characterized using experimental methods and their properties were studied theoretically.
Collapse
Affiliation(s)
- Anna A. Melekhova
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | | | | | - Nadezhda A. Bokach
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | | |
Collapse
|
26
|
Metal-involving generation of aminoheterocycles from N-substituted cyanamides: Toward sustainable chemistry (a Minireview). Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.02.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
27
|
Bikbaeva ZM, Novikov AS, Suslonov VV, Bokach NA, Kukushkin VY. Metal-mediated reactions between dialkylcyanamides and acetamidoxime generate unusual (nitrosoguanidinate)nickel(ii) complexes. Dalton Trans 2017; 46:10090-10101. [DOI: 10.1039/c7dt01960b] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitrosoguanidinate NiII complexes were generated via a hitherto unreported reaction between nickel(ii) salts, N,N-disubstituted cyanamides NCNR2, and the amidoxime MeC(NOH)NH2 in MeOH.
Collapse
Affiliation(s)
- Zarina M. Bikbaeva
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | | | | | - Nadezhda A. Bokach
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | | |
Collapse
|
28
|
Alegria EC, Guedes da Silva MFC, Kuznetsov ML, Martins LM, Pombeiro AJ. Mono-alkylation of cyanoimide at a molybdenum(IV) diphosphinic center by alkyl halides: synthesis, cathodically induced isomerization and theoretical studies. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.09.120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
29
|
Bolotin DS, Burianova VK, Novikov AS, Demakova MY, Pretorius C, Mokolokolo PP, Roodt A, Bokach NA, Suslonov VV, Zhdanov AP, Zhizhin KY, Kuznetsov NT, Kukushkin VY. Nucleophilicity of Oximes Based upon Addition to a Nitrilium closo-Decaborate Cluster. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00678] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Dmitrii S. Bolotin
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russian Federation
| | - Valeria K. Burianova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russian Federation
| | - Alexander S. Novikov
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russian Federation
| | - Marina Ya. Demakova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russian Federation
| | - Carla Pretorius
- Department
of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | - Pennie Petrus Mokolokolo
- Department
of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | - Andreas Roodt
- Department
of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | - Nadezhda A. Bokach
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russian Federation
| | - Vitaliy V. Suslonov
- Center
for X-ray Diffraction Studies, Saint Petersburg State University, Universitetskii
Pr., 26, Saint Petersburg 198504, Russian Federation
| | - Andrey P. Zhdanov
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky Pr., 31, Moscow 119991, Russian Federation
| | - Konstantin Yu. Zhizhin
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky Pr., 31, Moscow 119991, Russian Federation
| | - Nikolay T. Kuznetsov
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky Pr., 31, Moscow 119991, Russian Federation
| | - Vadim Yu. Kukushkin
- Institute
of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russian Federation
| |
Collapse
|
30
|
Andrusenko EV, Novikov AS, Starova GL, Bokach NA. Three-dimensional hydrogen bonding network in the structures of (dimethylcyanamide)cobalt(II) complexes. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.03.046] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
31
|
Kulish KI, Novikov AS, Tolstoy PM, Bolotin DS, Bokach NA, Zolotarev AA, Kukushkin VY. Solid state and dynamic solution structures of O-carbamidine amidoximes gives further insight into the mechanism of zinc(II)-mediated generation of 1,2,4-oxadiazoles. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.01.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
32
|
Islamova RM, Dobrynin MV, Ivanov DM, Vlasov AV, Kaganova EV, Grigoryan GV, Kukushkin VY. bis-Nitrile and bis-Dialkylcyanamide Platinum(II) Complexes as Efficient Catalysts for Hydrosilylation Cross-Linking of Siloxane Polymers. Molecules 2016; 21:311. [PMID: 26959003 PMCID: PMC6274487 DOI: 10.3390/molecules21030311] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 11/19/2022] Open
Abstract
cis- and trans-Isomers of the platinum(II) nitrile complexes [PtCl2(NCR)2] (R = NMe2, N(C₅H10), Ph, CH2Ph) were examined as catalysts for hydrosilylation cross-linking of vinyl-terminated polydimethylsiloxane and trimethylsilyl-terminated poly(dimethylsiloxane-co-ethylhydrosiloxane) producing high quality silicone rubbers. Among the tested platinum species the cis-complexes are much more active catalysts than their trans-congeners and for all studied platinum complexes cis-[PtCl2(NCCH2Ph)2] exhibits the best catalytic activity (room temperature, c = 1.0 × 10(-4) mol/L, τpot-life 60 min, τcuring 6 h). Although cis-[PtCl₂(NCCH2Ph)2] is less active than the widely used Karstedt's catalyst, its application for the cross-linking can be performed not only at room temperature (c = 1.0 × 10(-4) mol/L), but also, more efficiently, at 80 °C (c = 1.0 × 10(-4)-1.0 × 10(-5) mol/L) and it prevents adherence of the formed silicone rubbers to equipment. The usage of the cis- and trans-[PtCl2(NCR)2] complexes as the hydrosilylation catalysts do not require any inhibitors and, moreover, the complexes and their mixtures with vinyl- and trimethylsilyl terminated polysiloxanes are shelf-stable in air. Tested catalysts do not form colloid platinum particles after the cross-linking.
Collapse
Affiliation(s)
- Regina M Islamova
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia.
| | - Mikhail V Dobrynin
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia.
| | - Daniil M Ivanov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia.
| | - Andrey V Vlasov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia.
| | - Elena V Kaganova
- Federal State Unitary Enterprise S.V. Lebedev Research Institute for Synthetic Rubber, Gapsal'skaya, 1, 198035 Saint Petersburg, Russia.
| | - Galina V Grigoryan
- Federal State Unitary Enterprise S.V. Lebedev Research Institute for Synthetic Rubber, Gapsal'skaya, 1, 198035 Saint Petersburg, Russia.
| | - Vadim Yu Kukushkin
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia.
| |
Collapse
|
33
|
Ivanov DM, Gushchin PV, Novikov AS, Avdontceva MS, Zolotarev AA, Starova GL, Chen Y, Liu S, Chou P, Kukushkin VY. Platinum(II)‐Mediated Double Coupling of 2,3‐Diphenylmaleimidine with Nitrile Functionalities To Give Annulated Pentaazanonatetraenate (PANT) Systems. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Daniil M. Ivanov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation, http://ptchemin.chem.spbu.ru/
| | - Pavel V. Gushchin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation, http://ptchemin.chem.spbu.ru/
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation, http://ptchemin.chem.spbu.ru/
| | - Margarita S. Avdontceva
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation, http://ptchemin.chem.spbu.ru/
| | - Andrey A. Zolotarev
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation, http://ptchemin.chem.spbu.ru/
| | - Galina L. Starova
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation, http://ptchemin.chem.spbu.ru/
| | - Yi‐Ting Chen
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan, http://www.ch.ntu.edu.tw/~ptchou/
| | - Shih‐Hung Liu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan, http://www.ch.ntu.edu.tw/~ptchou/
| | - Pi‐Tai Chou
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan, http://www.ch.ntu.edu.tw/~ptchou/
| | - Vadim Yu. Kukushkin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation, http://ptchemin.chem.spbu.ru/
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, V. O. Bolshoi Pr. 31, 199004 Saint Petersburg, Russian Federation
| |
Collapse
|
34
|
Andrusenko EV, Kabin EV, Novikov AS, Bokach NA, Starova GL, Zolotarev AA, Kukushkin VY. Highly Reactive NiII-Bound Nitrile-Oxime Coupling Intermediates Stabilized by Substituting Conventional Nitriles with a Dialkylcyanamide. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500693] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
35
|
Rassadin VA, Boyarskiy VP, Kukushkin VY. Facile Gold-Catalyzed Heterocyclization of Terminal Alkynes and Cyanamides Leading to Substituted 2-Amino-1,3-Oxazoles. Org Lett 2015; 17:3502-5. [DOI: 10.1021/acs.orglett.5b01592] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Valentin A. Rassadin
- Institute of Chemistry, Saint Petersburg State University, Universitetskii Pr. 26, Stary Petergof, 198504 Saint Petersburg, Russia
| | - Vadim P. Boyarskiy
- Institute of Chemistry, Saint Petersburg State University, Universitetskii Pr. 26, Stary Petergof, 198504 Saint Petersburg, Russia
| | - Vadim Yu. Kukushkin
- Institute of Chemistry, Saint Petersburg State University, Universitetskii Pr. 26, Stary Petergof, 198504 Saint Petersburg, Russia
| |
Collapse
|
36
|
Serebryanskaya TV, Novikov AS, Gushchin PV, Zolotarev AA, Gurzhiy VV, Kukushkin VY. Coupling of platinated triguanides with platinum-activated nitriles as a novel strategy for generation of dimetallic systems. Dalton Trans 2015; 44:6003-11. [PMID: 25720690 DOI: 10.1039/c4dt03870c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
One of two Pt(IV)-activated propanenitriles in trans-[PtCl4(EtCN)2] is involved in platinum(IV)-mediated nitrile-imine coupling with the platinum(II)-based metallacycles [PtCl2{NH=C(NR2)N(Ph)C(=NH)N(Ph)C(NR2)=NH}] [R2 = Me2 (1a), C5H10 (1b)] yielding diplatinum products, whose structures depend on molar ratios between the reactants. At a 1 : 1 ratio, the mixed-valence platinum(II)/platinum(IV) species [PtCl4{NH=C(NR2)N(Ph)C{=[(N(Et)C=NH)PtCl2(EtCN)]}N(Ph)C(NR2)=NH}] [R2 = Me2 (2a), (CH2)5 (2b)] were generated, whereas at a 1 : 2 ratio the dinuclear platinum(II)/platinum(II) complexes [PtCl2{NH=C(NR2)N(Ph)C{=[(N(Et)C=NH)PtCl2(EtCN)]}N(Ph)C(NR2)=NH}] [R2 = Me2 (3a), (CH2)5 (3b)] were obtained. In contrast to the nitrile-imine coupling observed for the platinum(IV) dinitrile complex, the reaction between the platinum(II) congener trans-[PtCl2(EtCN)2] and any one of 1a,b gives exclusively the substituted dimetallic platinum(II)/platinum(II) products [PtCl2{NH=C(NR2)N(Ph)C{=[(NH)PtCl2(EtCN)]}N(Ph)C(NR2)=NH}] [R2 = Me2 (6a), (CH2)5 (6b)] featuring platinum-containing guanidine 1 as one of the ligands. Complexes 2a,b, 3a,b, and 6a,b were characterized by elemental analyses (C, H, N), HRESI-MS, IR, (1)H NMR spectroscopy, and DTA/TG. The molecular and crystal structure of 2a·2CDCl3 was additionally studied by single-crystal X-ray diffraction. Complexes 2a,b undergo further redox transformation in solutions, and single crystals of [PtCl2{NH=C(NMe2)N(Ph)C{=[(N(Et)C=NH)PtCl2(MeCN)]}N(Ph)C(NMe2)=NH}]·2CH2Cl2 (3'a·2CH2Cl2) were obtained from 2a in a CH2Cl2-MeCN-C2H4Cl2 mixture and studied by X-ray crystallography. The driving forces for the generation of diplatinum products 2 and 3 were elucidated based on a quantum-chemical study.
Collapse
Affiliation(s)
- Tatiyana V Serebryanskaya
- Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation.
| | | | | | | | | | | |
Collapse
|
37
|
Bolotin DS, Demakova MY, Novikov AS, Avdontceva MS, Kuznetsov ML, Bokach NA, Kukushkin VY. Bifunctional reactivity of amidoximes observed upon nucleophilic addition to metal-activated nitriles. Inorg Chem 2015; 54:4039-46. [PMID: 25822628 DOI: 10.1021/acs.inorgchem.5b00253] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of the aromatic nitrile complexes trans-[PtCl2(RC6H4CN)2] (R = p-CF3 NC1, H NC2, o-Cl NC3) with the aryl amidoximes p-R'C6H4C(NH2)=NOH (R' = Me AO1, H AO2, Br AO3, CF3 AO4, NO2 AO5) in all combinations, followed by addition of 1 equiv of AgOTf and then 5 equiv of Et3N, leads to the chelates [PtCl{HN=C(RC6H4)ON=C(C6H4R'-p)NC(RC6H4)═NH}] (1-15; 15 examples; yields 71-88% after column chromatography) derived from the platinum(II)-mediated coupling between metal-activated nitriles and amidoximes. The mechanism of this reaction was studied experimentally by trapping and identification of the reaction intermediates, and it was also investigated theoretically at the DFT level of theory. The combined experimental and theoretical results indicate that the coupling with the nitrile ligands involves both the HON and monodeprotonated NH2 groups of the amidoximes, whereas in the absence of the base, the NH2 functionality is inactive toward the coupling. The observed reaction represents the first example of bifunctional nucleophilic behavior of amidoximes. The complexes 1-16 were characterized by elemental analyses (C, H, N), high-resolution ESI(+)-MS, FTIR, and (1)H NMR techniques, whereas unstable 17 was characterized by HRESI(+)-MS and FTIR. In addition, 8·C4H8O2, 12, and 16·CHCl3 were studied by single-crystal X-ray diffraction.
Collapse
Affiliation(s)
- Dmitrii S Bolotin
- †Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Marina Ya Demakova
- †Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Alexander S Novikov
- †Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Margarita S Avdontceva
- ‡Institute of Earth Sciences, Saint Petersburg State University, University Emb. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Maxim L Kuznetsov
- §Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Nadezhda A Bokach
- †Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Vadim Yu Kukushkin
- †Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation.,∥Institute of Macromolecular Compounds of Russian Academy of Sciences, V.O. Bolshoii Pr. 31, 199004 Saint Petersburg, Russian Federation
| |
Collapse
|
38
|
Hu JY, Liao CL, Hu LL, Zhang CC, Chen SF, Zhao JA. Group IIB metal directed complexes with flexible benzimidazole-based connector. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415030057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
39
|
Albertin G, Antoniutti S, Caia A, Castro J. Reactivity with Amines of Bis(cyanamide) and Bis(cyanoguanidine) Complexes of the Iron Triad. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201400591] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
40
|
Smirnov AS, Yandanova ES, Bokach NA, Starova GL, Gurzhiy VV, Avdontceva MS, Zolotarev AA, Kukushkin VY. Zinc(ii)-mediated generation of 5-amino substituted 2,3-dihydro-1,2,4-oxadiazoles and their further ZnII-catalyzed and O2-involving transformations. NEW J CHEM 2015. [DOI: 10.1039/c5nj02061a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
ZnII-activated cyanamides NCNR2 react with the acyclic N-alkyl ketonitrones Ph2CN+(O−)R′ achieving uncomplexed 2,3-dihydro-1,2,4-oxadiazoles.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Vadim Yu. Kukushkin
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russia
- Institute of Macromolecular Compounds of Russian Academy of Sciences
- 199004 Saint Petersburg
| |
Collapse
|
41
|
Demakova MY, Bolotin DS, Bokach NA, Starova GL, Kukushkin VY. Metal-mediated cyanamide–hydroxyguanidine coupling. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
42
|
Nickel(II) complexes featuring dialkylcyanamide ligands: Synthetic and structural studies. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.08.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
43
|
Bolotin DS, Kulish KI, Bokach NA, Starova GL, Gurzhiy VV, Kukushkin VY. Zinc(II)-Mediated Nitrile–Amidoxime Coupling Gives New Insights into H+-Assisted Generation of 1,2,4-Oxadiazoles. Inorg Chem 2014; 53:10312-24. [DOI: 10.1021/ic501333s] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Dmitrii S. Bolotin
- Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Kirill I. Kulish
- Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Nadezhda A. Bokach
- Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Galina L. Starova
- Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Vladislav V. Gurzhiy
- Institute of Earth Sciences, Saint Petersburg State University, University emb. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Institute of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
- Institute
of Macromolecular Compounds of Russian Academy of Sciences, V.O. Bolshoii Pr. 31, 199004 Saint Petersburg, Russian Federation
| |
Collapse
|
44
|
Albertin G, Antoniutti S, Castro J, Siddi S. Preparation of diethylcyanamide and cyanoguanidine complexes of manganese and rhenium. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.05.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
45
|
Zhu X, Alexandratos SD. The role of polarizability in determining metal ion affinities in polymer-supported reagents: Phosphorylated ethylene glycol. REACT FUNCT POLYM 2014. [DOI: 10.1016/j.reactfunctpolym.2014.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
46
|
Albertin G, Antoniutti S, Caia A, Castro J. Preparation and reactivity towards hydrazines of bis(cyanamide) and bis(cyanoguanidine) complexes of the iron triad. Dalton Trans 2014; 43:7314-23. [PMID: 24691705 DOI: 10.1039/c4dt00394b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis(diethylcyanamide) [Fe(N≡CNEt2)2L4](BPh4)2 1a and bis(cyanoguanidine) [Fe{N≡CN(H)C(NH2)=NH}2L4](BPh4)2 1b [L = P(OEt)3] complexes were prepared by allowing iron(II) chloride to react first with an excess of P(OEt)3 and then of the appropriate cyanamide, followed by addition of an excess of NaBPh4. Instead, bis(complexes) of ruthenium and osmium [M(N≡CNEt2)2L4](BPh4)2 2a, 3a and [M{N≡CN(H)C(NH2)=NH}2L4](BPh4)2 2b, 3b (M = Ru 2, Os 3) were prepared by reacting hydrides MH2L4 first with either triflic acid HOTf or methyltriflate MeOTf and then with an excess of the appropriate cyanamide. Hydride-diethylcyanamide [MH(N≡CNEt2)L4]BPh4 4a, 5a and hydride-cyanoguanidine complexes [MH{N≡CN(H)C(NH2)=NH}L4](BPh4)2 4b, 5b (M = Ru 4, Os 5) were also obtained by reacting MH2L4 first with one equivalent of HOTf or MeOTf and then with the appropriate cyanamide. Treatment of bis(cyanamide) and bis(cyanoguanidine) complexes 1-3 with hydrazines RNHNH2 afforded hydrazinecarboximidamide derivatives [M{η(2)-N(H)=C(NEt2)N(R)NH2}L4](BPh4)2 6a-12a and [M{η(2)-N(H)=C[N=C(NH2)2]N(R)NH2}L4](BPh4)2 6b-12b (M = Fe 6-8, Ru 9, 10, Os 11, 12; R = H 6, 9, 11, Me 7, 10, 12, Ph 8). A reaction path involving nucleophilic attack by hydrazine on the cyanamide carbon atom is proposed. All the complexes were characterised by spectroscopy and X-ray crystal structure determination of [Os{η(2)-NH=C[N=C(NH2)2]N(CH3)NH2}{P(OEt)3}4](BPh4)2 12b.
Collapse
Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Dorsoduro 2137, 30123 Venezia, Italy.
| | | | | | | |
Collapse
|
47
|
Smirnov AS, Butukhanova ES, Bokach NA, Starova GL, Gurzhiy VV, Kuznetsov ML, Kukushkin VY. Novel (cyanamide)ZnIIcomplexes and zinc(ii)-mediated hydration of the cyanamide ligands. Dalton Trans 2014; 43:15798-811. [PMID: 25220287 DOI: 10.1039/c4dt01812e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ZnII-mediated hydration of cyanamides does not require any co-catalyst.
Collapse
Affiliation(s)
- Andrey S. Smirnov
- Institute of Chemistry
- Saint Petersburg State University
- 198504 Stary Petergof, Russian Federation
| | - Ekaterina S. Butukhanova
- 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
| | - Galina L. Starova
- Institute of Chemistry
- Saint Petersburg State University
- 198504 Stary Petergof, Russian Federation
| | - Vladislav V. Gurzhiy
- Institute of Chemistry
- Saint Petersburg State University
- 198504 Stary Petergof, Russian Federation
| | - Maxim L. Kuznetsov
- Centro de Química Estrutural
- Complexo I
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon, Portugal
| | - Vadim Yu. Kukushkin
- Institute of Chemistry
- Saint Petersburg State University
- 198504 Stary Petergof, Russian Federation
| |
Collapse
|