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Rivera C, Bacilio-Beltrán HA, Puebla-Pérez AM, Rangel-Salas II, Alvarado–Rodríguez JG, Flores-Moreno R, Velázquez- Juárez G, Peregrina-Lucano AA, Becerra-Martinez E, Valdez-Ruvalcaba J, Rubio-Garcia JE, Cortes-Llamas SA. Cis and trans platinum(II) N-heterocyclic carbene isomers: synthesis, characterization and biological activity. NEW J CHEM 2022. [DOI: 10.1039/d2nj02508f] [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 synthesis of cis and trans geometrical isomers of platinum(II) complexes with a symmetric N-heterocyclic carbene ligand (MeNHC) is reported. These complexes were obtained from 1,3-dimethylimidazolium-2-carboxylate, a masked NHC precursor....
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2
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Polina S, Putta VPRK, Gujjarappa R, Pujar PP, Malakar CC. Aza‐Michael
addition of 1,
2‐diazoles
to structurally diverse enones: Efficient methods toward
β‐amino
ketones. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Saibabu Polina
- Department of Chemistry CHRIST (Deemed to be University) Bengaluru India
| | | | - Raghuram Gujjarappa
- Department of Chemistry National Institute of Technology Manipur Imphal India
| | | | - Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Imphal India
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3
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Quinlivan PJ, Loo A, Shlian DG, Martinez J, Parkin G. N-Heterocyclic Carbene Complexes of Nickel, Palladium, and Iridium Derived from Nitron: Synthesis, Structures, and Catalytic Properties. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00679] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Patrick J. Quinlivan
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Aaron Loo
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Daniel G. Shlian
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Joan Martinez
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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4
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Cabeza JA, Fernández-Colinas JM, García-Álvarez P, González-Álvarez L, Pérez-Carreño E. Reactivity of Amidinatosilylenes and Amidinatogermylenes with [PtMe 2(η 4-cod)]: cis- versus trans-[PtMe 2L 2] Complexes and Cyclometalation Reactions. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - José M. Fernández-Colinas
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Laura González-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Enrique Pérez-Carreño
- Departamento de Química Física y Analítica, Universidad de Oviedo, 33071 Oviedo, Spain
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5
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Huynh HV. Electronic Properties of N-Heterocyclic Carbenes and Their Experimental Determination. Chem Rev 2018; 118:9457-9492. [DOI: 10.1021/acs.chemrev.8b00067] [Citation(s) in RCA: 446] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Han Vinh Huynh
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
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6
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Gómez-Suárez A, Nelson DJ, Nolan SP. Quantifying and understanding the steric properties of N-heterocyclic carbenes. Chem Commun (Camb) 2018; 53:2650-2660. [PMID: 28203667 DOI: 10.1039/c7cc00255f] [Citation(s) in RCA: 229] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This Feature Article presents and discusses the use of different methods to quantify and explore the steric impact of N-heterocyclic carbene (NHC) ligands. These include (a) the percent buried volume (%Vbur), which provides a convenient single number to measure steric impact and (b) steric maps, which provide a graphical representation of the steric profile of a ligand using colour-coded contour maps. A critical discussion of the scope and limitations of these tools is presented, along with some examples of their use in organometallic chemistry and catalysis. This Article should provide all users of NHCs, from organic, organometallic, and inorganic chemistry backgrounds, with an appreciation of how these tools can be used to quantify and compare their steric properties.
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Affiliation(s)
- Adrián Gómez-Suárez
- Organic Chemistry Institute, WWU Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - David J Nelson
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Steven P Nolan
- Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 - S3, 9000 Gent, Belgium.
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7
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Nahra F, Van Hecke K, Kennedy AR, Nelson DJ. Coinage metal complexes of selenoureas derived from N-heterocyclic carbenes. Dalton Trans 2018; 47:10671-10684. [DOI: 10.1039/c8dt01506f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The coordination chemistry of selenoureas derived from N-heterocyclic carbenes with copper and silver is explored, and compared to previous work with gold.
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Affiliation(s)
- Fady Nahra
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Alan R. Kennedy
- WestCHEM Department of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | - David J. Nelson
- WestCHEM Department of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
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8
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Rehm T, Rothemund M, Muenzner JK, Noor A, Kempe R, Schobert R. Novel cis-[(NHC)1(NHC)2(L)Cl]platinum(ii) complexes – synthesis, structures, and anticancer activities. Dalton Trans 2016; 45:15390-15398. [DOI: 10.1039/c6dt02350a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Platinum(ii) complexes bearing two different, cis-oriented, N-heterocyclic carbene ligands are readily accessible for catalysis or as selective, pleiotropic anticancer agents.
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Affiliation(s)
- Tobias Rehm
- Organic Chemistry Laboratory
- University Bayreuth
- 95440 Bayreuth
- Germany
| | | | | | - Awal Noor
- Lehrstuhl fuer Anorganische Chemie II (Catalyst Design)
- University Bayreuth
- 95440 Bayreuth
- Germany
| | - Rhett Kempe
- Lehrstuhl fuer Anorganische Chemie II (Catalyst Design)
- University Bayreuth
- 95440 Bayreuth
- Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory
- University Bayreuth
- 95440 Bayreuth
- Germany
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9
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Yau J, Hunt KE, McDougall L, Kennedy AR, Nelson DJ. Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands. Beilstein J Org Chem 2015; 11:2171-8. [PMID: 26664639 PMCID: PMC4660989 DOI: 10.3762/bjoc.11.235] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 10/27/2015] [Indexed: 11/23/2022] Open
Abstract
Two new nickel catalysts have been prepared using a convenient procedure where nickelocene, the NHC·HBF4 salts, and [Et4N]Cl were heated in THF using microwave irradiation. The resulting [NiCl(Cp)(NHC)] complexes are air- and moisture stable in the solid state, and represent two new members of this valuable and practical class of nickel catalysts. The new species were fully characterised using methods including NMR spectroscopy and X-ray crystallography. When tested in model Suzuki–Miyaura cross-coupling reactions, these complexes were found to be active for the cross-coupling of aryl bromides and aryl chlorides.
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Affiliation(s)
- Johnathon Yau
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Kaarel E Hunt
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Laura McDougall
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Alan R Kennedy
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - David J Nelson
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK
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10
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Tobisu M, Morioka T, Ohtsuki A, Chatani N. Nickel-catalyzed reductive cleavage of aryl alkyl ethers to arenes in absence of external reductant. Chem Sci 2015; 6:3410-3414. [PMID: 29511506 PMCID: PMC5659071 DOI: 10.1039/c5sc00305a] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 03/25/2015] [Indexed: 11/21/2022] Open
Abstract
The reductive cleavage of the C-O bonds of aryl ethers has great potential in organic synthesis. Although several catalysts that can promote the reductive cleavage of aryl ethers have been reported, all such systems require the use of an external reductant, e.g., hydrosilane or hydrogen. Here, we report the development of a new nickel-based catalytic system that can cleave the C-O bonds of ethers in the absence of an external reductant. The hydrogen atom required in this new reductive cleavage reaction is provided by the alkoxy group of the substrate, which serves as an internal reductant. The absence of an external reductant enables the unique chemoselectivity, i.e., the selective reduction of an alkoxy group over alkenes and ketones.
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Affiliation(s)
- Mamoru Tobisu
- Department of Applied Chemistry , Faculty of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan . ;
- Center for Atomic and Molecular Technologies , Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan
- ESICB , Kyoto University , Katsura , Kyoto 615-8510 , Japan
| | - Toshifumi Morioka
- Department of Applied Chemistry , Faculty of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan . ;
| | - Akimichi Ohtsuki
- Center for Atomic and Molecular Technologies , Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan
| | - Naoto Chatani
- Department of Applied Chemistry , Faculty of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan . ;
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11
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Nelson DJ, Truscott BJ, Slawin AMZ, Nolan SP. Synthesis and reactivity of new bis(N-heterocyclic carbene) iridium(I) complexes. Inorg Chem 2013; 52:12674-81. [PMID: 24147789 DOI: 10.1021/ic4018773] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
New complexes of the type trans-[IrCl(η(2)-COE)(NHC)2] (COE = cis-cyclooctene; NHC = N-heterocyclic carbene) have been prepared in one step from the reaction of ca. 4 equiv of NHC or [AgCl(NHC)] with [IrCl(η(2)-COE)2]2 in benzene. These new complexes have been characterized by techniques including NMR and IR spectroscopy, X-ray crystallography, and elemental analysis. Exposing trans-[IrCl(COE)(I(i)Pr(Me))2] to CO yielded trans-[IrCl(CO)(I(i)Pr(Me))2], which is the only bis(NHC) analogue of Vaska's complex trans-[IrCl(CO)(PPh3)2] known to date. The synthesis of trans-[Ir(CO)(I(i)Pr(Me))2(R)] (R = MeO, PhCC, OSiPh3, O2CPh) complexes has been achieved via deprotonation reactions involving the new hydroxide species trans-[Ir(OH)(CO)(I(i)Pr(Me))2].
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Affiliation(s)
- David J Nelson
- EaStCHEM, School of Chemistry, University of St Andrews , North Haugh, St Andrews, Fife KY16 9ST, United Kingdom
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12
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Gülcemal S, Gökçe AG, Çetinkaya B. N-Benzyl Substituted N-Heterocyclic Carbene Complexes of Iridium(I): Assessment in Transfer Hydrogenation Catalyst. Inorg Chem 2013; 52:10601-9. [DOI: 10.1021/ic401626e] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Süleyman Gülcemal
- Department of Chemistry, Ege University, TR-35100, Bornova, Izmir, Turkey
| | - Aytaç Gürhan Gökçe
- Department
of Physics, Dokuz Eylul University, TR-35160, Buca, Izmir, Turkey
| | - Bekir Çetinkaya
- Department of Chemistry, Ege University, TR-35100, Bornova, Izmir, Turkey
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13
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Tsoureas N, Hamilton A, Haddow MF, Harvey JN, Orpen AG, Owen GR. Insight into the Hydrogen Migration Processes Involved in the Formation of Metal–Borane Complexes: Importance of the Third Arm of the Scorpionate Ligand. Organometallics 2013. [DOI: 10.1021/om4002389] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nikolaos Tsoureas
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Alex Hamilton
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Mairi F. Haddow
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Jeremy N. Harvey
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - A. Guy Orpen
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Gareth R. Owen
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
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14
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Truscott BJ, Nelson DJ, Lujan C, Slawin AMZ, Nolan SP. Iridium(I) Hydroxides: Powerful Synthons for Bond Activation. Chemistry 2013; 19:7904-16. [DOI: 10.1002/chem.201300669] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Indexed: 11/08/2022]
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15
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Gülcemal S, Gökçe AG, Çetinkaya B. Iridium(i) N-heterocyclic carbene complexes of benzimidazol-2-ylidene: effect of electron donating groups on the catalytic transfer hydrogenation reaction. Dalton Trans 2013; 42:7305-11. [DOI: 10.1039/c2dt32482b] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Nelson DJ, Nolan SP. Quantifying and understanding the electronic properties of N-heterocyclic carbenes. Chem Soc Rev 2013; 42:6723-53. [DOI: 10.1039/c3cs60146c] [Citation(s) in RCA: 808] [Impact Index Per Article: 73.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Truscott BJ, Slawin AMZ, Nolan SP. Well-defined NHC-rhodium hydroxide complexes as alkenehydrosilylation and dehydrogenative silylation catalysts. Dalton Trans 2013; 42:270-6. [DOI: 10.1039/c2dt31339a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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