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Bulky NHC–Cobalt Complex-Catalyzed Highly Markovnikov-Selective Hydrosilylation of Alkynes. Catalysts 2023. [DOI: 10.3390/catal13030510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
The hydrosilylation of alkynes is one of the most attractive and, at the same time, most challenging catalytic transformations, usually demanding the use of noble transition metals. We describe a catalytic system, based on cobalt(0) complex and bulky N-heterocyclic carbene (NHC) ligands, permitting the highly effective hydrosilylation of a broad scope of alkynes and silanes. The application of bulky NHC ligands allowed a decrease in the amount of cobalt necessary for an effective reaction run to 2.5 mol% and provided excellent selectivity towards challenging α-vinylsilanes. The developed method tolerates a number of substituted aryl, alkyl, and silyl acetylenes. Moreover, it is suitable for both tertiary and secondary silanes. Our findings confirm that steric hindrance around the metal center can effectively increase the activity of a catalyst and ensure better selectivity than those of analogous complexes bearing smaller ligands.
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Bołt M, Żak P. Solvent-free hydroboration of alkynes catalyzed by an NHC-cobalt complex. RSC Adv 2022; 12:18572-18577. [PMID: 35873331 PMCID: PMC9234744 DOI: 10.1039/d2ra03005e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 06/02/2022] [Indexed: 11/21/2022] Open
Abstract
A new cobalt complex bearing a bulky N-heterocyclic carbene (NHC) ligand is described as a pre-catalyst for alkyne hydroboration. The proposed catalytic system, synthesized using easily accessible reagents, allowed obtaining a series of mono- and dialkenylboranes in solvent-free conditions with excellent efficiency and selectivity. The results have been compared to those obtained in the presence of the same cobalt complex containing smaller NHC ligands and those achieved for the catalytic system based on a CoCl2 - NHC precursor.
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Affiliation(s)
- Małgorzata Bołt
- Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan Uniwersytetu Poznańskiego 8 61-614 Poznan Poland
| | - Patrycja Żak
- Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan Uniwersytetu Poznańskiego 8 61-614 Poznan Poland
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3
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Deng J, Xue T, Wu HH, Wu P. Preparation of cost-effective Ni-Ag bimetallic catalyst for hydrodehalogenation of aryl halides under mild conditions. NEW J CHEM 2022. [DOI: 10.1039/d2nj01532c] [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
Cost-effective Ni-Ag bimetallic nanoparticles were prepared using an aqueous-phase surfactant-aided co-reduction process and used as catalyst for the hydrodehalogenation of aryl halides CAr-X (X=F, Cl, Br). The CAr-X could be...
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Bołt M, Hanek K, Żak P. Metal-free thioesterification of α,β-unsaturated aldehydes with thiols. Org Chem Front 2022. [DOI: 10.1039/d2qo00678b] [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
For the first time, the synthesis of thioesters starting from enals and thiols has been performed in the presence of a bulky N-heterocyclic carbene (NHC) as a catalyst.
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Affiliation(s)
- Małgorzata Bołt
- Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland
| | - Kamil Hanek
- Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland
| | - Patrycja Żak
- Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland
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5
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Speelman AL, Tran BL, Erickson JD, Vasiliu M, Dixon DA, Bullock RM. Accelerating the insertion reactions of (NHC)Cu-H via remote ligand functionalization. Chem Sci 2021; 12:11495-11505. [PMID: 34567502 PMCID: PMC8409461 DOI: 10.1039/d1sc01911b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 07/23/2021] [Indexed: 12/27/2022] Open
Abstract
Most ligand designs for reactions catalyzed by (NHC)Cu-H (NHC = N-heterocyclic carbene ligand) have focused on introducing steric bulk near the Cu center. Here, we evaluate the effect of remote ligand modification in a series of [(NHC)CuH]2 in which the para substituent (R) on the N-aryl groups of the NHC is Me, Et, t Bu, OMe or Cl. Although the R group is distant (6 bonds away) from the reactive Cu center, the complexes have different spectroscopic signatures. Kinetics studies of the insertion of ketone, aldimine, alkyne, and unactivated α-olefin substrates reveal that Cu-H complexes with bulky or electron-rich R groups undergo faster substrate insertion. The predominant cause of this phenomenon is destabilization of the [(NHC)CuH]2 dimer relative to the (NHC)Cu-H monomer, resulting in faster formation of Cu-H monomer. These findings indicate that remote functionalization of NHCs is a compelling strategy for accelerating the rate of substrate insertion with Cu-H species.
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Affiliation(s)
- Amy L Speelman
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Ba L Tran
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Jeremy D Erickson
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Monica Vasiliu
- Department of Chemistry and Biochemistry, University of Alabama Tuscaloosa AL 35487 USA
| | - David A Dixon
- Department of Chemistry and Biochemistry, University of Alabama Tuscaloosa AL 35487 USA
| | - R Morris Bullock
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory Richland WA 99352 USA
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6
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Prima DO, Madiyeva M, Burykina JV, Minyaev ME, Boiko DA, Ananikov VP. Evidence for “cocktail”-type catalysis in Buchwald–Hartwig reaction. A mechanistic study. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01601f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The mechanism of the C–N cross-coupling reaction, catalyzed by Pd/NHC, was evaluated at the molecular and nanoscale levels. The first evidence for the involvement of a “cocktail”-type system in the Buchwald–Hartwig reaction is provided.
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Affiliation(s)
- Darya O. Prima
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
| | - Malena Madiyeva
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Julia V. Burykina
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
| | - Mikhail E. Minyaev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
| | - Daniil A. Boiko
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Valentine P. Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
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7
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Palladium-catalyzed synthesis of pyrimido[5’,4’:3,4]pyrrolo[1,2-f]phenanthridine-12,14(11H,13H)-diones and related compounds. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2277-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Jouha J, Khouili M, Hiebel MA, Guillaumet G, Suzenet F. Room temperature dehalogenation of (hetero)aryl halides with magnesium/methanol. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Glinyanaya NV, Korotkikh NI, Cowley AH, Williams O, Jones RA, Lynch VM, Kiselyov AV, Rayenko GF, Derevenets MA, Ryabitsky AB, Palomero OE, Shvaika OP. Sterically Shielded Stable Carbenes and Biscarbenes of the 1,2,4‐Triazole Series: A New Method for the Preparation of 1,3,4‐Triaryl‐1,2,4‐triazol‐5‐ylidenes. ChemistrySelect 2018. [DOI: 10.1002/slct.201800658] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nataliya V. Glinyanaya
- Department of Chemistry of Heterocyclic CompoundsThe L.M. Litvinenko Institute of Physical Organic and Coal ChemistryUkrainian Academy of Sciences, 50 Kharkiv road, Kyiv 02160 Ukraine
| | - Nikolai I. Korotkikh
- Department of Chemistry of Stable CarbenesThe Institute of Organic ChemistryUkrainian Academy of Sciences; 5 Murmanskaya Street, Kyiv-94 02660
| | - Alan H. Cowley
- Department of ChemistryThe University of Texas at Austin 1 University Station A5300, Austin Texas 78712-0165
| | - Owen Williams
- Department of ChemistryThe University of Texas at Austin 1 University Station A5300, Austin Texas 78712-0165
| | - Richard A. Jones
- Department of ChemistryThe University of Texas at Austin 1 University Station A5300, Austin Texas 78712-0165
| | - Vincent M. Lynch
- Department of ChemistryThe University of Texas at Austin 1 University Station A5300, Austin Texas 78712-0165
| | - Artyom V. Kiselyov
- Department of Chemistry of Heterocyclic CompoundsThe L.M. Litvinenko Institute of Physical Organic and Coal ChemistryUkrainian Academy of Sciences, 50 Kharkiv road, Kyiv 02160 Ukraine
| | - Gennady F. Rayenko
- Department of Chemistry of Heterocyclic CompoundsThe L.M. Litvinenko Institute of Physical Organic and Coal ChemistryUkrainian Academy of Sciences, 50 Kharkiv road, Kyiv 02160 Ukraine
| | - Maria A. Derevenets
- Department of Chemistry of Stable CarbenesThe Institute of Organic ChemistryUkrainian Academy of Sciences; 5 Murmanskaya Street, Kyiv-94 02660
| | | | - Orhi Esarte Palomero
- Department of ChemistryThe University of Texas at Austin 1 University Station A5300, Austin Texas 78712-0165
| | - Oles P. Shvaika
- Department of Chemistry of Heterocyclic CompoundsThe L.M. Litvinenko Institute of Physical Organic and Coal ChemistryUkrainian Academy of Sciences, 50 Kharkiv road, Kyiv 02160 Ukraine
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Affiliation(s)
- Mirko Ruamps
- LCC-CNRS, Université de Toulouse, INPT, UPS, 205 route de Narbonne, 31077 Toulouse cedex 4, France
| | - Noël Lugan
- LCC-CNRS, Université de Toulouse, INPT, UPS, 205 route de Narbonne, 31077 Toulouse cedex 4, France
| | - Vincent César
- LCC-CNRS, Université de Toulouse, INPT, UPS, 205 route de Narbonne, 31077 Toulouse cedex 4, France
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11
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Zhang F, Zhang J, Zhou X. Facile Construction of Yttrium Pentasulfides from Yttrium Alkyl Precursors: Synthesis, Mechanism, and Reactivity. Inorg Chem 2017; 56:2070-2077. [DOI: 10.1021/acs.inorgchem.6b02747] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fangjun Zhang
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Jie Zhang
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Xigeng Zhou
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
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12
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Yang J. Synthesis and characterization of N-heterocyclic carbene–PdCl2–1H-benzotriazole complexes and their catalytic activities toward Mizoroki–Heck and Sonogashira reactions. J COORD CHEM 2017. [DOI: 10.1080/00958972.2016.1272676] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jin Yang
- Department of Chemistry, Huaibei Normal University, Huaibei, PR China
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13
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Piperazine- and DABCO-bridged dinuclearN-heterocyclic carbene palladium complexes: synthesis, structure and application to Hiyama coupling reaction. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3543] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Chemistry of Stable Carbenes and «Green» Technologies. SCIENCE AND INNOVATION 2015. [DOI: 10.15407/scine11.06.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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