1
|
Baguli S, Nath S, Kundu A, Menon H, Adhikari D, Mukherjee D. (CAAC)CuCl: A Competent Precatalyst for Carbonyl and Ester Hydrosilylation. Inorg Chem 2024; 63:18552-18562. [PMID: 39319868 DOI: 10.1021/acs.inorgchem.4c01624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
Cu-catalyzed carbonyl hydrosilylation involves a ligated "[(L)CuH]" as the active catalyst, where the ligand L has a crucial role toward the stability, stereoselectivity, and enhancement of the hydridicity. Strongly σ-donating N-heterocyclic carbenes (NHCs), their ring-expanded form, and an abnormal NHC as ligands have yielded robust and efficient Cu catalysts. However, cyclic(alkyl)(amino)carbenes (CAACs), despite being stronger σ-donors than NHCs and already having a salient Cu(I) chemistry, are yet to be reported as a similar ligand platform for this purpose. We establish here the familiar [(Me2CAAC)CuCl] as a powerful precatalyst in this regard. Additionally, it also catalyzes the more challenging ester hydrosilylation, which is a rare feat for a Cu catalyst. Apart from the stronger σ-donating ability, the more steric "openness" of CAACs than bulky NHCs also seems to be advantageous. To corroborate, three new (CAAC)CuCl complexes [(ArCH2,MeCAAC)CuCl] (Ar = Ph, 1-naphthyl, and 1-prenyl) are devised, where the effective steric around the copper is practically unaltered from the case of [(Me2CAAC)CuCl]. All three are equally active in carbonyl and ester hydrosilylation as [(Me2CAAC)CuCl]. Computation suggests the carbonyl insertion into a "(CAAC)Cu-H" as the rate-limiting step. To elucidate the involvement of a "(CAAC)CuH", "(PhCH2,MeCAAC)CuH" is generated in situ and is trapped as its BH3 adduct (PhCH2,MeCAAC)CuBH4.
Collapse
Affiliation(s)
- Sudip Baguli
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Soumajit Nath
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Abhishek Kundu
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, SAS Nagar, Manauli 140306, Punjab, India
| | - Harikrishna Menon
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Debashis Adhikari
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, SAS Nagar, Manauli 140306, Punjab, India
| | - Debabrata Mukherjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| |
Collapse
|
2
|
Kojima Y, Nishii Y, Hirano K. Asymmetric Synthesis of SCF 3-Substituted Alkylboronates by Copper-Catalyzed Hydroboration of 1-Trifluoromethylthioalkenes. Angew Chem Int Ed Engl 2024; 63:e202403337. [PMID: 38472112 DOI: 10.1002/anie.202403337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/14/2024]
Abstract
A synthetic method for preparation of optically active trifluoromethylthio (SCF3) compounds by a copper-catalyzed regio- and enantioselective hydroboration of 1-trifluoromethylthioalkenes with H-Bpin has been developed. The enantioselective hydrocupration of an in situ generated CuH species and subsequent boration reaction generate a chiral SCF3-containing alkylboronate, of which Bpin moiety can be further transformed to deliver various optically active SCF3 molecules. Computational studies suggest that the SCF3 group successfully controls the regioselectivity in the reaction.
Collapse
Affiliation(s)
- Yuki Kojima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuji Nishii
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
3
|
Grasruck A, Parla G, Lou L, Langer J, Neiß C, Herrera A, Frieß S, Görling A, Schmid G, Dorta R. Trapping of soluble, KCl-stabilized Cu(I) hydrides with CO 2 gives crystalline formates. Chem Commun (Camb) 2023; 59:13879-13882. [PMID: 37933531 DOI: 10.1039/d3cc03033d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Cu(I)-Hydrido complexes supported by dibenzo[b,f]azepinyl P-alkene hybrid ligands and stabilized by electrostatic interactions in a Cu-H⋯KCl⋯BR3 arrangement can be trapped with CO2 at low temperature to afford Cu(I)-formates. The complexes are isolable with and without a pendant BEt3 group and show strong Cu-O and weak B-O interactions.
Collapse
Affiliation(s)
- Alexander Grasruck
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany.
| | - Giorgio Parla
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany.
| | - Lisha Lou
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany.
| | - Jens Langer
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany.
| | - Christian Neiß
- Department Chemie und Pharmazie, Theoretische Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Alberto Herrera
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany.
| | - Sybille Frieß
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany.
| | - Andreas Görling
- Department Chemie und Pharmazie, Theoretische Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Günter Schmid
- Siemens Energy Global GmbH & Co. KG, New Energy Business - Technology & Products, Freyeslebenstraße 1, 91058 Erlangen, Germany
| | - Romano Dorta
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany.
| |
Collapse
|
4
|
Hussein AA, Ariffin A. Remote Steric and Electronic Effects of N-Heterocyclic Carbene Ligands on Alkene Reactivity and Regioselectivity toward Hydrocupration Reactions: The Role of Expanded-Ring N-Heterocyclic Carbenes. J Org Chem 2023; 88:13009-13021. [PMID: 37649423 DOI: 10.1021/acs.joc.3c01121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The remote groups in N-heterocyclic carbene (NHC) ligands have a significant influence on metal-catalyzed reactions. We examine how remote bulkiness, electronic groups, and expanded-ring NHCs (ER-NHCs) influence alkene reactivity and regioselectivity toward hydrocupration using density functional theory calculations. The impact of remote steric bulkiness on the Cu-H insertion rate is analyzed, revealing a strong correlation between the steric substituent constant and rate ratio, where a bulky group increases the rate due to reduced steric effects in the transition state (TS). The steric properties of the examined catalysts (with a remote group R2 = CPh3, CHPh2, CH2Ph, CH3, and H) and their corresponding TSs are found to be modulated greatly by the remote steric substitution group and the ring size of the NHC ligand. Enhanced bulkiness enhances the nucleophilic Cu-H moiety. The remote electronic groups have a smaller impact on insertion barrier compared to that of steric hindrance. Furthermore, ER-NHC exploration indicates that NHCs with over five-membered rings have a significantly negative influence on the reaction rate. Finally, with a highly bulky group (R2 = CPh3), anti-Markovnikov insertion preference is attributed to high interaction energy and improved steric properties. Overall, our findings here provide valuable insights for the development of a more effective catalyst in metal-catalyzed reactions.
Collapse
Affiliation(s)
- Aqeel A Hussein
- Department of Medical Laboratory Science, College of Science, Komar University of Science and Technology, Sulaymaniyah, Kurdistan Region 46001, Iraq
- Department of Biology, College of Science, Al-Qasim Green University, Al-Qassim, Babylon 51013, Iraq
| | - Azhar Ariffin
- Department of Chemistry, Faculty of Science, University Malaya, Kuala Lumpur 50603, Malaysia
| |
Collapse
|
5
|
Beamer AW, Buss JA. Synthesis, Structural Characterization, and CO 2 Reactivity of a Constitutionally Analogous Series of Tricopper Mono-, Di-, and Trihydrides. J Am Chem Soc 2023. [PMID: 37276588 DOI: 10.1021/jacs.3c04170] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The formation of hydrides at heterogeneous copper surfaces results in dramatic structural and reactivity changes, yet the morphologies of these materials and their respective roles in catalysis are not well understood. Of particular interest is the reactivity of heterogeneous copper hydrides with carbon dioxide (CO2), an early mechanistic branching point in the CO2 reduction reaction. Herein, we report the synthesis, characterization, and reactivity of tricopper compounds supported by a facially biased, chelating tris(carbene) ligand scaffold. This sterically bulky environment affords access to an isolable series of tricopper hydrides: [LCu3H]2+ (4), [LCu3H2]+ (3), and LCu3H3 (6). Single-crystal X-ray diffraction and solution NMR spectroscopy studies reveal both geometric flexibility within the Cu3 core and fluxionality of hydride ligands across the Cu3 cluster, providing both atomically precise experimental analogues of static surface species and emulating dynamic ligand behavior proposed for surfaces. Electronic structure calculations serve as a predictor of hydricity, which was likewise benchmarked experimentally via both protonolysis and hydride abstraction reactions. Increased hydride number (and commensurately lower cluster charge) results in more hydridic complexes, with a thermodynamic hydricity range spanning >30 kcal/mol. These thermochemical studies serve as an accurate predictor of CO2 reactivity. Together, this Cu3Hx series exhibits the structure/reactivity relationships proposed for catalytically active copper surfaces, validating the application of carefully designed molecular clusters toward elucidating mechanisms in surface science.
Collapse
Affiliation(s)
- Andrew W Beamer
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Joshua A Buss
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
6
|
Ataie S, Lohoar M, Mangin LP, Baker RT. Coinage metal amido and thiolate SNS complexes: consequences of catalyst speciation in Cu(I)-catalysed carbonyl hydroboration. Chem Commun (Camb) 2023; 59:4044-4046. [PMID: 36928477 DOI: 10.1039/d2cc06077a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Three new IPr-Ag- and -Au-SNS amido and thiolate complexes were synthesized and compared to their previously reported Cu analogues as carbonyl hydroboration catalysts (IPr = bis(2,6-diisopropylphenyl)imidazol-2-ylidene). Although these complexes showed no catalytic activity, treatment of the IPr-Ag-SNS amido complex with pinacolborane released the N-borylated ligand, SMeNBpinSMe, (L1-Bpin). This finding led us to reinvestigate the IPr-Cu-SNS amido precatalyst, revealing that immediate loss of L1-Bpin converts our catalyst system to [CuH(IPr)]2.
Collapse
Affiliation(s)
- Saeed Ataie
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
| | - Maxwell Lohoar
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, PO Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Loïc P Mangin
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
| | - R Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
| |
Collapse
|
7
|
Tran BL, Erickson JD, Speelman AL, Bullock RM. Mechanistic Studies of Carbonyl Allylation Mediated by (NHC)CuH: Isoprene Insertion, Allylation, and β-Hydride Elimination. Inorg Chem 2023; 62:342-352. [PMID: 36525336 DOI: 10.1021/acs.inorgchem.2c03402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The ability of Cu-H complexes to undergo selective insertion of unsaturated hydrocarbons under mild conditions has rendered them valuable, versatile catalysts. The direct formation of Cu allyl intermediates from unfunctionalized 1,3-dienes and transient Cu hydrides is an appealing strategy for upgrading conjugated diene feedstocks. However, empirical mechanistic studies of the underlying elementary steps and characterization of key intermediates in Cu-H catalysis are sparse. Using [(NHC)CuH]2 (NHC = N-heterocyclic carbene), we examined the steric effects of NHC ligands on two key elementary steps of CuH-catalyzed carbonyl allylation: the insertion of a diene into the Cu-H bond to produce a Cu-allyl complex, and the formation of C-C bonds from stoichiometric allylations of ketones and aldehydes. The resulting allyl and homoallylic alkoxide complexes have been characterized by NMR spectroscopy and single-crystal X-ray diffraction. Employing isolable (NHC)Cu-allyl complexes, we further evaluated the roles of the ligand size, electronic properties of carbonyl substrates, coordinating groups within the substrate, and solvent on the regioselectivity, diastereoselectivity, and relative rate of the C-C bond formation step. In contrast to the clean allylation of ketones, allylation of aldehydes provided a rare example of a formal β-hydride elimination reaction from a secondary homoallylic alkoxide species. Mechanistic studies of key elementary steps provide insights for a range of catalytic reactions of dienes mediated by hydride complexes.
Collapse
Affiliation(s)
- Ba L Tran
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Jeremy D Erickson
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Amy L Speelman
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - R Morris Bullock
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| |
Collapse
|
8
|
Carroll TG, Ryan DE, Erickson JD, Bullock RM, Tran BL. Isolation of a Cu–H Monomer Enabled by Remote Steric Substitution of a N-Heterocyclic Carbene Ligand: Stoichiometric Insertion and Catalytic Hydroboration of Internal Alkenes. J Am Chem Soc 2022; 144:13865-13873. [DOI: 10.1021/jacs.2c05376] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Timothy G. Carroll
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - David E. Ryan
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jeremy D. Erickson
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - R. Morris Bullock
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Ba L. Tran
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| |
Collapse
|
9
|
Bienenmann RLM, Schanz AJ, Ooms PL, Lutz M, Broere DLJ. A Well-Defined Anionic Dicopper(I) Monohydride Complex that Reacts like a Cluster. Angew Chem Int Ed Engl 2022; 61:e202202318. [PMID: 35412679 PMCID: PMC9400846 DOI: 10.1002/anie.202202318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Indexed: 11/08/2022]
Abstract
Low-nuclearity copper hydrides are rare and few well-defined dicopper hydrides have been reported. Herein, we describe the first example of a structurally characterized anionic dicopper hydride complex. This complex does not display typical reactivity associated with low-nuclearity copper hydrides, such as alcoholysis or insertion reactions. Instead, its stoichiometric and catalytic reactivity is akin to that of copper hydride clusters. The distinct reactivity is ascribed to the robust dinuclear core that is bound tightly within the dinucleating ligand scaffold.
Collapse
Affiliation(s)
- Roel L. M. Bienenmann
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Alexandra J. Schanz
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Pascale L. Ooms
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Martin Lutz
- Structural BiochemistryBijvoet Centre for Biomolecular ResearchFaculty of ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Daniël L. J. Broere
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| |
Collapse
|
10
|
Bienenmann RLM, Schanz AJ, Ooms PL, Lutz M, Broere DLJ. A Well‐Defined Anionic Dicopper(I) Monohydride Complex that Reacts like a Cluster**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Roel L. M. Bienenmann
- Organic Chemistry and Catalysis Debye Institute for Nanomaterials Science Faculty of Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Alexandra J. Schanz
- Organic Chemistry and Catalysis Debye Institute for Nanomaterials Science Faculty of Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Pascale L. Ooms
- Organic Chemistry and Catalysis Debye Institute for Nanomaterials Science Faculty of Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Martin Lutz
- Structural Biochemistry Bijvoet Centre for Biomolecular Research Faculty of Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Daniël L. J. Broere
- Organic Chemistry and Catalysis Debye Institute for Nanomaterials Science Faculty of Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| |
Collapse
|
11
|
Guo QL, Han BL, Sun CF, Wang Z, Tao Y, Lin JQ, Luo GG, Tung CH, Sun D. Observation of a bcc-like framework in polyhydrido copper nanoclusters. NANOSCALE 2021; 13:19642-19649. [PMID: 34816855 DOI: 10.1039/d1nr05567d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Cu is well-known to adopt a face-centered cubic (fcc) structure in the bulk phase. Ligand-stabilized Cu nanoclusters (NCs) with atomically precise structures are an emerging class of nanomaterials. However, it remains a great challenge to have non-fcc structured Cu NCs. In this contribution, we report the syntheses and total structure determination of six 28-nuclearity polyhydrido Cu NCs: [Cu28H16(dppp)4(RS)4(CF3CO2)8] (dppp = 1,3-bis(diphenylphosphino)propane, RSH = cyclohexylthiol, 1; tert-butylthiol, 3; and 2-thiophenethiol, 4) and [Cu28H16(dppe)4(RS)4(CH3CO2)6Cl2] (dppe = 1,2-bis(diphenylphosphino)ethane, RSH = (4-isopropyl)thiophenol, 2; 4-tert-butylbenzenethiol, 5; and 4-tert-butylbenzylmercaptan, 6). Their well-defined structures solved by X-ray single crystal diffraction reveal that these 28-Cu NCs are isostructural, and the overall metal framework is arranged as a sandwich structure with a core-shell Cu2@Cu16 unit held by two Cu5 fragments. One significant finding is that the organization of 18 Cu atoms in the Cu2@Cu16 could be regarded as an incomplete and distorted version of 3 × 2 × 2 "cutout" of the body-centered cubic (bcc) bulk phase, which was strikingly different to the fcc structure of bulk Cu. The bcc framework came as a surprise, as no bcc structures have been previously observed in Cu NCs. A comparison with the ideal bcc arrangement of 18 Cu atoms in the bcc lattice suggests that the distortion of the bcc structure results from the insertion of interstitial hydrides. The existence, number, and location of hydrides in these polyhydrido Cu NCs are established by combined experimental and DFT results. These results have significant implications for the development of high-nuclearity Cu hydride NCs with a non-fcc architecture.
Collapse
Affiliation(s)
- Qi-Lin Guo
- Key Laboratory of Environmental Friendly Functional Materials Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, People's Republic of China.
| | - Bao-Liang Han
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan, 250100, People's Republic of China.
| | - Cun-Fa Sun
- Key Laboratory of Environmental Friendly Functional Materials Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, People's Republic of China.
| | - Zhi Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan, 250100, People's Republic of China.
| | - Yunwen Tao
- Department of Chemistry, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275-0314, USA.
| | - Jin-Qing Lin
- Key Laboratory of Environmental Friendly Functional Materials Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, People's Republic of China.
| | - Geng-Geng Luo
- Key Laboratory of Environmental Friendly Functional Materials Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, People's Republic of China.
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan, 250100, People's Republic of China.
| | - Di Sun
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan, 250100, People's Republic of China.
| |
Collapse
|
12
|
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.
Collapse
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
| |
Collapse
|
13
|
Persaud RR, Fang Z, Zall CM, Appel AM, Dixon DA. Computational Study of Triphosphine-Ligated Cu(I) Catalysts for Hydrogenation of CO 2 to Formate. J Phys Chem A 2021; 125:6600-6610. [PMID: 34297558 DOI: 10.1021/acs.jpca.1c04050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The catalyzed hydrogenation of CO2 to formate via a triphosphine-ligated Cu(I) was studied computationally at the density functional theory level in the presence of a self-consistent reaction field. Of the four functionals benchmarked, M06 was generally in the best agreement with the available experimentally estimated values. Two bases, DBU and TBD, were studied in the context of two proposed mechanisms in the MeCN solvent. Activation of H2 was explored by using LCu(DBU)+ to form LCuH. Dissociation of a ligand arm results in higher barriers to form the key hydride complex, LCuH. The preferred mechanism passes through a transition state, where the H2 has one H atom interacting with the copper center and the other H atom interacting with the N atom of the base, similar to H2 insertion into a frustrated Lewis pair. There is no significant difference between the choice of a base, DBU or TBD, with respect to the proposed mechanisms. We propose that the experimentally observed differences between DBU and TBD reactivities for this mechanism are due to off-pathway changes.
Collapse
Affiliation(s)
- Rudradatt R Persaud
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| | - Zongtang Fang
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| | - Christopher M Zall
- Department of Chemistry, Sam Houston State University, 1003 Bowers Boulevard, Huntsville, Texas 77341, United States
| | - Aaron M Appel
- Pacific Northwest National Laboratory, P.O. Box 999, MS K2-57, Richland, Washington 99352, United States
| | - David A Dixon
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| |
Collapse
|
14
|
Aloisi A, Crochet É, Nicolas E, Berthet JC, Lescot C, Thuéry P, Cantat T. Copper–Ligand Cooperativity in H2 Activation Enables the Synthesis of Copper Hydride Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00212] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alicia Aloisi
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | - Étienne Crochet
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | - Emmanuel Nicolas
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | | | - Camille Lescot
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | - Pierre Thuéry
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | - Thibault Cantat
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| |
Collapse
|
15
|
Dhara D, Scheschkewitz D, Chandrasekhar V, Yildiz CB, Jana A. Reactivity of NHC/diphosphene-coordinated Au(I)-hydride. Chem Commun (Camb) 2021; 57:809-812. [PMID: 33367425 DOI: 10.1039/d0cc05461e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We report the reactivity of isolable Au(i)-hydride stabilized by an NHC-coordinated diphosphene towards substrates containing C-C and N-N multiple bonds (NHC = N-heterocyclcic carbene). Reactions with dimethyl acetylenedicarboxylate and azobenzene lead to a trans-addition of the Au(i)-H across the C-C triple bond and the N-N double bond, respectively. In contrast, the reaction with ethyl diazoacetate affords a gold(i)-hydrazonide as the 1,1-addition product to the terminal nitrogen atom. With phenyl acetylene, the corresponding Au(i)-alkynyl complex is obtained under the elimination of dihydrogen. Strikingly, diphosphene-containing Au(i)-hydride is more reactive - affording different products in some cases - than a related NHC-stabilized Au(i)-hydride without the mediating diphosphene moiety.
Collapse
Affiliation(s)
- Debabrata Dhara
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - David Scheschkewitz
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123 Saarbrücken, Germany.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India. and Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Cem B Yildiz
- Department of Medicinal and Aromatic Plants, University of Aksaray, Aksaray, Turkey.
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| |
Collapse
|
16
|
Yan H, Liu Z, Tan K, Tan K, Ji R, Ye Y, Yan T, Shen Y. Synthesis and evaluation of indole-substituted N-heterocyclic carbene ligands. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
17
|
Yang XW, Li DH, Song AX, Liu FS. "Bulky-Yet-Flexible" α-Diimine Palladium-Catalyzed Reductive Heck Cross-Coupling: Highly Anti-Markovnikov-Selective Hydroarylation of Alkene in Air. J Org Chem 2020; 85:11750-11765. [PMID: 32808522 DOI: 10.1021/acs.joc.0c01509] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
To pursue a highly regioselective and efficient reductive Heck reaction, a series of moisture- and air-stable α-diimine palladium precatalysts were rationally designed, readily synthesized, and fully characterized. The relationship between the structures of the palladium complexes and the catalytic properties was investigated. It was revealed that the"bulky-yet-flexible"palladium complexes allowed highly anti-Markovnikov-selective hydroarylation of alkenes with (hetero)aryl bromides under aerobic conditions. Further synthetic application of the present protocol could provide rapid and straightforward access to functional and biologically active molecules.
Collapse
Affiliation(s)
- Xu-Wen Yang
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Dong-Hui Li
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - A-Xiang Song
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Feng-Shou Liu
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| |
Collapse
|
18
|
Ekanayake DA, Chakraborty A, Krause JA, Guan H. Steric Effects of HN(CH2CH2PR2)2 on the Nuclearity of Copper Hydrides. Inorg Chem 2020; 59:12817-12828. [DOI: 10.1021/acs.inorgchem.0c01865] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Dewmi A. Ekanayake
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Arundhoti Chakraborty
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Jeanette A. Krause
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Hairong Guan
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| |
Collapse
|
19
|
Desnoyer AN, Nicolay A, Ziegler MS, Torquato NA, Tilley TD. A Dicopper Platform that Stabilizes the Formation of Pentanuclear Coinage Metal Hydride Complexes. Angew Chem Int Ed Engl 2020; 59:12769-12773. [DOI: 10.1002/anie.202004346] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Addison N. Desnoyer
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Amélie Nicolay
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Micah S. Ziegler
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Nicole A. Torquato
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
| | - T. Don Tilley
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| |
Collapse
|
20
|
Desnoyer AN, Nicolay A, Ziegler MS, Torquato NA, Tilley TD. A Dicopper Platform that Stabilizes the Formation of Pentanuclear Coinage Metal Hydride Complexes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Addison N. Desnoyer
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Amélie Nicolay
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Micah S. Ziegler
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Nicole A. Torquato
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
| | - T. Don Tilley
- Department of Chemistry University of California, Berkeley Berkeley CA 94720-1460 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| |
Collapse
|
21
|
Matavos-Aramyan S, Soukhakian S, Jazebizadeh MH. Mononuclear Cu Complexes Based on Nitrogen Heterocyclic Carbene: A Comprehensive Review. Top Curr Chem (Cham) 2020; 378:39. [PMID: 32367181 DOI: 10.1007/s41061-020-00304-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/16/2020] [Indexed: 11/28/2022]
Abstract
During the last decade, organometallic, coordination, and catalytic chemistry of the three-dimensional metals such as copper (Cu) has been greatly affected by the emergence of nitrogen heterocyclic carbene (NHC) complexes. The NHCs, and in particular the mononuclear CuI-based ones, have been proven vastly useful in several applications such as in biosynthesis, catalysis, photochemistry, etc. This review tries to thoroughly describe a series of mononuclear CuI NHC complexes and their subcategories such as heteroleptics, and bidentate and tridentate heteroatom complexes, and give some detailed insights on their development, emergence, and applications. A brief outlook is also disclosed to enable other researchers to further develop a platform for future advances and studies in the field of CuI-based NHCs.
Collapse
Affiliation(s)
- Sina Matavos-Aramyan
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran.
| | - Sadaf Soukhakian
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
| | - Mohammad Hossein Jazebizadeh
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
| |
Collapse
|
22
|
Nakajima T, Tanase T. Transition Metal Clusters Constrained by Linear Tetradentate Phosphine Ligands. CHEM LETT 2020. [DOI: 10.1246/cl.200041] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Takayuki Nakajima
- Department of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| |
Collapse
|
23
|
Jazzar R, Soleilhavoup M, Bertrand G. Cyclic (Alkyl)- and (Aryl)-(amino)carbene Coinage Metal Complexes and Their Applications. Chem Rev 2020; 120:4141-4168. [DOI: 10.1021/acs.chemrev.0c00043] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| |
Collapse
|
24
|
Orr SA, Kelly JA, Boutland AJ, Blair VL. Structural Elucidation of Silver(I) Amides and Their Application as Catalysts in the Hydrosilylation and Hydroboration of Carbonyls. Chemistry 2020; 26:4947-4951. [DOI: 10.1002/chem.202000169] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/17/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Samantha A. Orr
- School of ChemistryMonash University Wellington Road Clayton, Melbourne VIC 3800 Australia
| | - John A. Kelly
- School of ChemistryMonash University Wellington Road Clayton, Melbourne VIC 3800 Australia
| | - Aaron J. Boutland
- School of ChemistryMonash University Wellington Road Clayton, Melbourne VIC 3800 Australia
| | - Victoria L. Blair
- School of ChemistryMonash University Wellington Road Clayton, Melbourne VIC 3800 Australia
| |
Collapse
|
25
|
Tran BL, Neisen BD, Speelman AL, Gunasekara T, Wiedner ES, Bullock RM. Mechanistic Studies on the Insertion of Carbonyl Substrates into Cu‐H: Different Rate‐Limiting Steps as a Function of Electrophilicity. Angew Chem Int Ed Engl 2020; 59:8645-8653. [DOI: 10.1002/anie.201916406] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/01/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Ba L. Tran
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Benjamin D. Neisen
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Amy L. Speelman
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Thilina Gunasekara
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Eric S. Wiedner
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - R. Morris Bullock
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| |
Collapse
|
26
|
Tran BL, Neisen BD, Speelman AL, Gunasekara T, Wiedner ES, Bullock RM. Mechanistic Studies on the Insertion of Carbonyl Substrates into Cu‐H: Different Rate‐Limiting Steps as a Function of Electrophilicity. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ba L. Tran
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Benjamin D. Neisen
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Amy L. Speelman
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Thilina Gunasekara
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Eric S. Wiedner
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - R. Morris Bullock
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| |
Collapse
|
27
|
Xu G, Leloux S, Zhang P, Meijide Suárez J, Zhang Y, Derat E, Ménand M, Bistri‐Aslanoff O, Roland S, Leyssens T, Riant O, Sollogoub M. Capturing the Monomeric (L)CuH in NHC‐Capped Cyclodextrin: Cavity‐Controlled Chemoselective Hydrosilylation of α,β‐Unsaturated Ketones. Angew Chem Int Ed Engl 2020; 59:7591-7597. [DOI: 10.1002/anie.202001733] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Indexed: 01/05/2023]
Affiliation(s)
- Guangcan Xu
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Sébastien Leloux
- Institute of Condensed Matter and Nanosciences (IMCN), Molecules, Solids and Reactivity (MOST)Université Catholique de Louvain (UCL) Place Louis Pasteur 1 1348 Louvain-La-Neuve Belgium
| | - Pinglu Zhang
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Jorge Meijide Suárez
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Yongmin Zhang
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Etienne Derat
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Mickaël Ménand
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Olivia Bistri‐Aslanoff
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Sylvain Roland
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| | - Tom Leyssens
- Institute of Condensed Matter and Nanosciences (IMCN), Molecules, Solids and Reactivity (MOST)Université Catholique de Louvain (UCL) Place Louis Pasteur 1 1348 Louvain-La-Neuve Belgium
| | - Olivier Riant
- Institute of Condensed Matter and Nanosciences (IMCN), Molecules, Solids and Reactivity (MOST)Université Catholique de Louvain (UCL) Place Louis Pasteur 1 1348 Louvain-La-Neuve Belgium
| | - Matthieu Sollogoub
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire (IPCM)UMR 8232 4, place Jussieu 75005 Paris France
| |
Collapse
|
28
|
Capturing the Monomeric (L)CuH in NHC‐Capped Cyclodextrin: Cavity‐Controlled Chemoselective Hydrosilylation of α,β‐Unsaturated Ketones. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001733] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
29
|
Theoretical Insights into the Aerobic Hydrogenase Activity of Molybdenum–Copper CO Dehydrogenase. INORGANICS 2019. [DOI: 10.3390/inorganics7110135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The Mo/Cu-dependent CO dehydrogenase from O. carboxydovorans is an enzyme that is able to catalyse CO oxidation to CO 2 ; moreover, it also expresses hydrogenase activity, as it is able to oxidize H 2 . Here, we have studied the dihydrogen oxidation catalysis by this enzyme using QM/MM calculations. Our results indicate that the equatorial oxo ligand of Mo is the best suited base for catalysis. Moreover, extraction of the first proton from H 2 by means of this basic centre leads to the formation of a Mo–OH–Cu I H hydride that allows for the stabilization of the copper hydride, otherwise known to be very unstable. In light of our results, two mechanisms for the hydrogenase activity of the enzyme are proposed. The first reactive channel depends on protonation of the sulphur atom of a Cu-bound cysteine residues, which appears to favour the binding and activation of the substrate. The second reactive channel involves a frustrated Lewis pair, formed by the equatorial oxo group bound to Mo and by the copper centre. In this case, no binding of the hydrogen molecule to the Cu center is observed but once H 2 enters into the active site, it can be split following a low-energy path.
Collapse
|
30
|
Romero EA, Chen G, Gembicky M, Jazzar R, Yu JQ, Bertrand G. Understanding the Activity and Enantioselectivity of Acetyl-Protected Aminoethyl Quinoline Ligands in Palladium-Catalyzed β-C(sp 3)-H Bond Arylation Reactions. J Am Chem Soc 2019; 141:16726-16733. [PMID: 31565934 DOI: 10.1021/jacs.9b06746] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Chiral acetyl-protected aminoalkyl quinoline (APAQ) ligands were recently discovered to afford highly active and enantioselective palladium catalysts for the arylation of methylene C(sp3)-H bonds, and herein, we investigate the origins of these heightened properties. Unprecedented amide-bridged APAQ-Pd dimers were predicted by density functional theory (DFT) calculations and were confirmed by single-crystal X-ray diffraction studies. Comparison of structural features between APAQ-Pd complexes and an acetyl-protected aminoethylpyridine APAPy-Pd complex strongly suggests that the high activity of the former originates from the presence of the quinoline ring, which slows the formation of the off-cycle palladium dimer. Furthermore, steric topographic maps for a representative subset of monomeric, monoligated palladium complexes allowed us to draw a unique parallel between the three-dimensional structures of these catalysts and their reported asymmetric induction in β-C(sp3)-H bond arylation reactions. Finally, cooperative noncovalent interactions present between the APAQ ligand and the substrate were identified as a crucial factor for imparting selectivity between chemically equivalent methylenic C(sp3)-H bonds prior to concerted metalation deprotonation activation.
Collapse
Affiliation(s)
- Erik A Romero
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Gang Chen
- Department of Chemistry , The Scripps Research Institute , 10550 N. Torrey Pines Road , La Jolla , California 92037 , United States
| | - Milan Gembicky
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Jin-Quan Yu
- Department of Chemistry , The Scripps Research Institute , 10550 N. Torrey Pines Road , La Jolla , California 92037 , United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| |
Collapse
|
31
|
Kruppa SV, Groß C, Gui X, Bäppler F, Kwasigroch B, Sun Y, Diller R, Klopper W, Niedner-Schatteburg G, Riehn C, Thiel WR. Photoinitiated Charge Transfer in a Triangular Silver(I) Hydride Complex and Its Oxophilicity. Chemistry 2019; 25:11269-11284. [PMID: 31188502 DOI: 10.1002/chem.201901981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/08/2019] [Indexed: 12/28/2022]
Abstract
The photoexcitation of a triangular silver(I) hydride complex, [Ag3 (μ3 -H)(μ2 -dcpm)3 ](PF6 )2 ([P](PF6 )2 , dcpm=bis(dicyclohexylphosphino)methane), designed with "UV-silent" bis-phosphine ligands, provokes hydride-to-Ag3 single and double electron transfer. The nature of the electronic transitions has been authenticated by absorption and photodissociation spectroscopy in parallel with high-level quantum-chemical computations utilizing the GW method and Bethe-Salpeter equation (GW-BSE). Specific photofragments of mass-selected [P]2+ ions testify to charge transfer and competing pathways resulting from the unique [Ag3 (μ3 -H)]2+ scaffold. This structural motif of [P](PF6 )2 has been unequivocally verified by 1 H NMR spectroscopy in concert with DFT and X-ray diffraction structural analysis, which revealed short equilateral Ag-Ag distances (dAgAg =3.08 Å) within the range of argentophilic interactions. The reduced radical cation [P]. + exhibits strong oxophilicity, forming [P+O2 ].+ ,which is a model intermediate for silver oxidation catalysis.
Collapse
Affiliation(s)
- Sebastian V Kruppa
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Cedric Groß
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Xin Gui
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131, Karlsruhe, Germany
| | - Florian Bäppler
- Department of Physics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 46, 67663, Kaiserslautern, Germany
| | - Björn Kwasigroch
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Yu Sun
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Rolf Diller
- Department of Physics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 46, 67663, Kaiserslautern, Germany
| | - Wim Klopper
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131, Karlsruhe, Germany
| | - Gereon Niedner-Schatteburg
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany.,Research Center OPTIMAS, Erwin-Schrödinger Str. 46, 67663, Kaiserslautern, Germany
| | - Christoph Riehn
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany.,Research Center OPTIMAS, Erwin-Schrödinger Str. 46, 67663, Kaiserslautern, Germany
| | - Werner R Thiel
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| |
Collapse
|
32
|
Andrella NO, Xu N, Gabidullin BM, Ehm C, Baker RT. Selective Copper Complex-Catalyzed Hydrodefluorination of Fluoroalkenes and Allyl Fluorides: A Tale of Two Mechanisms. J Am Chem Soc 2019; 141:11506-11521. [PMID: 31305996 DOI: 10.1021/jacs.9b03101] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The transition to more economically friendly small-chain fluorinated groups is leading to a resurgence in the synthesis and reactivity of fluoroalkenes. One versatile method to obtain a variety of commercially relevant hydrofluoroalkenes involves the catalytic hydrodefluorination (HDF) of fluoroalkenes using silanes. In this work it is shown that copper hydride complexes of tertiary phosphorus ligands (L) can be tuned to achieve selective multiple HDF of fluoroalkenes. In one example, HDF of the hexafluoropropene dimer affords a single isomer of heptafluoro-2-methylpentene in which five fluorines have been selectively replaced with hydrogens. DFT computational studies suggest a distinct HDF mechanisms for L2CuH (bidentate or bulky monodentate phosphines) and L3CuH (small cone angle monodentate phosphines) catalysts, allowing for stereocontrol of the HDF of trifluoroethylene.
Collapse
Affiliation(s)
- Nicholas O Andrella
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
| | - Nancy Xu
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
| | - Bulat M Gabidullin
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
| | - Christian Ehm
- Dipartimento di Scienze Chimiche , Università di Napoli Federico II , Via Cintia 80126 Napoli , Italy
| | - R Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
| |
Collapse
|
33
|
Danopoulos AA, Simler T, Braunstein P. N-Heterocyclic Carbene Complexes of Copper, Nickel, and Cobalt. Chem Rev 2019; 119:3730-3961. [PMID: 30843688 DOI: 10.1021/acs.chemrev.8b00505] [Citation(s) in RCA: 272] [Impact Index Per Article: 54.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The emergence of N-heterocyclic carbenes as ligands across the Periodic Table had an impact on various aspects of the coordination, organometallic, and catalytic chemistry of the 3d metals, including Cu, Ni, and Co, both from the fundamental viewpoint but also in applications, including catalysis, photophysics, bioorganometallic chemistry, materials, etc. In this review, the emergence, development, and state of the art in these three areas are described in detail.
Collapse
Affiliation(s)
- Andreas A Danopoulos
- Laboratory of Inorganic Chemistry , National and Kapodistrian University of Athens , Panepistimiopolis Zografou , Athens GR 15771 , Greece.,Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
| | - Thomas Simler
- Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
| | - Pierre Braunstein
- Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
| |
Collapse
|
34
|
Ritter F, Mukherjee D, Spaniol TP, Hoffmann A, Okuda J. A Masked Cuprous Hydride as a Catalyst for Carbonyl Hydrosilylation in Aqueous Solutions. Angew Chem Int Ed Engl 2019; 58:1818-1822. [DOI: 10.1002/anie.201811890] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Indexed: 01/06/2023]
Affiliation(s)
- Florian Ritter
- Institute of Inorganic ChemistryRWTH Aachen University Landoltweg 1 52056 Aachen Germany
| | - Debabrata Mukherjee
- Institute of Inorganic ChemistryRWTH Aachen University Landoltweg 1 52056 Aachen Germany
- Current address: Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur West Bengal 721302 India
| | - Thomas P. Spaniol
- Institute of Inorganic ChemistryRWTH Aachen University Landoltweg 1 52056 Aachen Germany
| | - Alexander Hoffmann
- Institute of Inorganic ChemistryRWTH Aachen University Landoltweg 1 52056 Aachen Germany
| | - Jun Okuda
- Institute of Inorganic ChemistryRWTH Aachen University Landoltweg 1 52056 Aachen Germany
| |
Collapse
|
35
|
Ritter F, Mukherjee D, Spaniol TP, Hoffmann A, Okuda J. Ein maskiertes Kupferhydrid als Katalysator für die Carbonylhydrosilylierung in wässrigen Lösungen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Florian Ritter
- Institut für Anorganische ChemieRWTH Aachen University Landoltweg 1 52056 Aachen Deutschland
| | - Debabrata Mukherjee
- Derzeitige Adresse: Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur Westbengalen 721302 Indien
| | - Thomas P. Spaniol
- Institut für Anorganische ChemieRWTH Aachen University Landoltweg 1 52056 Aachen Deutschland
| | - Alexander Hoffmann
- Institut für Anorganische ChemieRWTH Aachen University Landoltweg 1 52056 Aachen Deutschland
| | - Jun Okuda
- Institut für Anorganische ChemieRWTH Aachen University Landoltweg 1 52056 Aachen Deutschland
- Derzeitige Adresse: Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur Westbengalen 721302 Indien
| |
Collapse
|
36
|
Leverett AR, Cole ML, McKay AI. An exceptionally stable NHC complex of indane (InH3). Dalton Trans 2019; 48:1591-1594. [DOI: 10.1039/c8dt04956d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A study of the decomposition of the indium trihydride complex, [InH3(IPr)], has identified a decomposition pathway mediated by proximal alkyl C–H bonds on the ligand. This prompted the synthesis of [InH3(IPr*)], which exhibits vastly superior thermal and air stability relative to the reported InH3 complexes.
Collapse
Affiliation(s)
| | - Marcus L. Cole
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | | |
Collapse
|
37
|
Dhayal RS, van Zyl WE, Liu CW. Copper hydride clusters in energy storage and conversion. Dalton Trans 2019; 48:3531-3538. [DOI: 10.1039/c8dt04639e] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Copper hydride clusters of variable nuclearity are derived from hydrogen and HCOOH as emerging energy storage materials and models.
Collapse
Affiliation(s)
- Rajendra S. Dhayal
- Department of Chemical Sciences
- School of Basic and Applied Sciences
- Central University of Punjab
- Bathinda 151 001
- India
| | - Werner E. van Zyl
- School of Chemistry and Physics
- University of KwaZulu Natal
- Durban 4000
- South Africa
| | - C. W. Liu
- Department of Chemistry
- National Dong Hwa University
- Hualien
- Taiwan 97401
| |
Collapse
|
38
|
Johnson A, Martínez-Martínez AJ, Macgregor SA, Weller AS. A d 10 Ag(i) amine-borane σ-complex and comparison with a d 8 Rh(i) analogue: structures on the η 1 to η 2:η 2 continuum. Dalton Trans 2019; 48:9776-9781. [PMID: 31012457 DOI: 10.1039/c9dt00971j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
H3B·NMe3 σ-complexes of d8 [(L1)Rh][BArF4] and d10 [(L1)Ag][BArF4] (where L1 = 2,6-bis-[1-(2,6-diisopropylphenylimino)ethyl]pyridine) have been prepared and structurally characterised. Analysis of the molecular and electronic structures reveal important but subtle differences in the nature of the bonding in these σ-complexes, which differ only by the identity of the metal centre and the d-electron count. With Rh the amine-borane binds in an η2:η2 fashion, whereas at Ag the unsymmetrical {AgH3B·NMe3} unit suggests a structure lying between the η2:η2 and η1 extremes.
Collapse
Affiliation(s)
- Alice Johnson
- Chemistry Research Laboratories, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.
| | | | | | | |
Collapse
|
39
|
Romero EA, Zhao T, Nakano R, Hu X, Wu Y, Jazzar R, Bertrand G. Tandem copper hydride–Lewis pair catalysed reduction of carbon dioxide into formate with dihydrogen. Nat Catal 2018. [DOI: 10.1038/s41929-018-0140-3] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
40
|
Hall JW, Unson DML, Brunel P, Collins LR, Cybulski MK, Mahon MF, Whittlesey MK. Copper-NHC-Mediated Semihydrogenation and Hydroboration of Alkynes: Enhanced Catalytic Activity Using Ring-Expanded Carbenes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00467] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jonathan W. Hall
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, United Kingdom
| | - Darcy M. L. Unson
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, United Kingdom
| | - Paul Brunel
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, United Kingdom
| | - Lee R. Collins
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, United Kingdom
| | - Mateusz K. Cybulski
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, United Kingdom
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, United Kingdom
| | - Michael K. Whittlesey
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, United Kingdom
| |
Collapse
|
41
|
Affiliation(s)
- Catherine Weetman
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research CenterTechnische Universität München (TUM) Lichtenbergstraße 4 Garching bei München 85748 Germany
| | - Shigeyoshi Inoue
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research CenterTechnische Universität München (TUM) Lichtenbergstraße 4 Garching bei München 85748 Germany
| |
Collapse
|
42
|
Dhayal RS, Chen HP, Liao JH, van Zyl WE, Liu CW. Synthesis, Structural Characterization, and H2
Evolution Study of a Spheroid-Shape Hydride-Rich Copper Nanocluster. ChemistrySelect 2018. [DOI: 10.1002/slct.201800765] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Rajendra S. Dhayal
- Department of Chemistry; National Dong Hwa University; Hualien Taiwan 97401, R. O. C
- Department of Chemical Sciences; School of Basic and Applied Sciences; Central University of Punjab; Bathinda- 151 001 India
| | - Hsuan-Ping Chen
- Department of Chemistry; National Dong Hwa University; Hualien Taiwan 97401, R. O. C
| | - Jian-Hong Liao
- Department of Chemistry; National Dong Hwa University; Hualien Taiwan 97401, R. O. C
| | - Werner E. van Zyl
- School of Chemistry and Physics; University of KwaZulu-Natal, Westville Campus; Durban 4000 South Africa
| | - C. W. Liu
- Department of Chemistry; National Dong Hwa University; Hualien Taiwan 97401, R. O. C
| |
Collapse
|
43
|
Lui MW, Shynkaruk O, Oakley MS, Sinelnikov R, McDonald R, Ferguson MJ, Meldrum A, Klobukowski M, Rivard E. Engaging dual donor sites within an N-heterocyclic olefin phosphine ligand. Dalton Trans 2018; 46:5946-5954. [PMID: 28418418 DOI: 10.1039/c7dt00398f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By investigating the coordination chemistry of a neutral N-heterocyclic olefin phosphine ligand, a new digold(i) chloride complex was discovered, demonstrating that mixed element (P/C) donor sites can be accessed at the same time. However attempts to extend this strategy for the preparation of heterobimetallic complexes featuring copper(i) and gold(i) centers with this mixed donor ligand were unsuccessful. The related monometallic copper(i) and gold(i) iodide complexes were discovered to be emissive in the solid state.
Collapse
Affiliation(s)
- Melanie W Lui
- Department of Chemistry, 11227 Saskatchewan Drive, University of Alberta, Edmonton, AB, Canada T6G 2G2.
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Mankad NP. Diverse bimetallic mechanisms emerging from transition metal Lewis acid/base pairs: development of co-catalysis with metal carbenes and metal carbonyl anions. Chem Commun (Camb) 2018; 54:1291-1302. [DOI: 10.1039/c7cc09675e] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The rational development of catalytic reactions involving cooperative behavior between two catalytic reactive sites represents a frontier area of research from which novel reactivity and selectivity patterns emerge.
Collapse
Affiliation(s)
- Neal P. Mankad
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
| |
Collapse
|
45
|
Roy MMD, Ferguson MJ, McDonald R, Rivard E. Approaching monocoordination at a silver(i) cation. Chem Commun (Camb) 2018; 54:483-486. [DOI: 10.1039/c7cc08418h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A series of highly electrophilic [(NHC)Ag]+ complexes (NHC = N-heterocyclic carbene) have been prepared which approach the limit of monocoordination for silver(i).
Collapse
Affiliation(s)
- Matthew M. D. Roy
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Michael J. Ferguson
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Robert McDonald
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Eric Rivard
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| |
Collapse
|
46
|
Li Z, Hou Y, Li Y, Hinz A, Harmer JR, Su CY, Bertrand G, Grützmacher H. L3
C3
P3
: Tricarbontriphosphide Tricyclic Radicals and Cations Stabilized by Cyclic (alkyl)(amino)carbenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710099] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Zhongshu Li
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Yuanfeng Hou
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Yaqi Li
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Alexander Hinz
- University of Oxford; Chemistry Research Laboratory; 12 Mansfield Road OX1 3TA Oxford UK
| | - Jeffrey R. Harmer
- Centre for Advanced Imaging; University of Queensland; Brisbane QLD, 4072 Australia
| | - Cheng-Yong Su
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Guy Bertrand
- UCSD/CNRS Joint Research Chemistry Laboratory; Department of Chemistry; University of California San Diego; La Jolla CA 92521-0403 USA
| | - Hansjörg Grützmacher
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
- Department of Chemistry and Applied Biosciences; ETH Zurich; 8093 Zurich Switzerland
| |
Collapse
|
47
|
Li Z, Hou Y, Li Y, Hinz A, Harmer JR, Su CY, Bertrand G, Grützmacher H. L3
C3
P3
: Tricarbontriphosphide Tricyclic Radicals and Cations Stabilized by Cyclic (alkyl)(amino)carbenes. Angew Chem Int Ed Engl 2017; 57:198-202. [DOI: 10.1002/anie.201710099] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Zhongshu Li
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Yuanfeng Hou
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Yaqi Li
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Alexander Hinz
- University of Oxford; Chemistry Research Laboratory; 12 Mansfield Road OX1 3TA Oxford UK
| | - Jeffrey R. Harmer
- Centre for Advanced Imaging; University of Queensland; Brisbane QLD, 4072 Australia
| | - Cheng-Yong Su
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
| | - Guy Bertrand
- UCSD/CNRS Joint Research Chemistry Laboratory; Department of Chemistry; University of California San Diego; La Jolla CA 92521-0403 USA
| | - Hansjörg Grützmacher
- Lehn Institute of Functional Materials (LIFM); School of Chemistry; Sun Yat-Sen University; 510275 Guangzhou China
- Department of Chemistry and Applied Biosciences; ETH Zurich; 8093 Zurich Switzerland
| |
Collapse
|
48
|
Hicken A, White AJP, Crimmin MR. Selective Reduction of CO2
to a Formate Equivalent with Heterobimetallic Gold- - -Copper Hydride Complexes. Angew Chem Int Ed Engl 2017; 56:15127-15130. [DOI: 10.1002/anie.201709072] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Alexandra Hicken
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| |
Collapse
|
49
|
Hicken A, White AJP, Crimmin MR. Selective Reduction of CO2
to a Formate Equivalent with Heterobimetallic Gold- - -Copper Hydride Complexes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexandra Hicken
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| |
Collapse
|
50
|
Xi Y, Hartwig JF. Mechanistic Studies of Copper-Catalyzed Asymmetric Hydroboration of Alkenes. J Am Chem Soc 2017; 139:12758-12772. [PMID: 28787137 DOI: 10.1021/jacs.7b07124] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Mechanistic studies of the copper-catalyzed asymmetric hydroboration of vinylarenes and internal alkenes are reported. Catalytic systems with both DTBM-SEGPHOS and SEGPHOS as the ligands have been investigated. With DTBM-SEGPHOS as the ligand, the resting state of the catalyst, which is also a catalytic intermediate, for hydroboration of 4-fluorostyrene is a phenethylcopper(I) complex ligated by the bisphosphine. This complex was fully characterized by NMR spectroscopy and X-ray crystallography. The turnover-limiting step in the catalytic cycle for the reaction of vinylarenes is the borylation of this phenethylcopper complex with pinacolborane (HBpin) to form the boronate ester product and a copper hydride. Experiments showed that the borylation occurs with retention of configuration at the benzylic position. β-Hydrogen elimination and insertion of the alkene to reform this phenethylcopper complex is reversible in the absence of HBpin but is irreversible during the catalytic process because reaction with HBpin is faster than β-hydrogen elimination of the phenethylcopper complex. Studies on the hydroboration of a representative internal alkene, trans-3-hexenyl 2,4,6-trichlorobenzoate, which undergoes enantio- and regioselective addition of HBpin catalyzed by DTBM-SEGPHOS, KOtBu, and CuCl, also was conducted, and these studies revealed that a DTBM-SEGPHOS-ligated copper(I) dihydridoborate complex is the resting state of the catalyst in this case. The turnover-limiting step in the catalytic cycle for hydroboration of the internal alkene is insertion of the alkene into a copper(I) hydride formed by reversible dissociation of HBpin from the copper dihydridoborate species. With SEGPHOS as the ligand, a dimeric copper hydride was observed as the dominant species during the hydroboration of 4-fluorostyrene, and this complex is not catalytically competent. DFT calculations provide a view into the origins of regio- and enantioselectivity of the catalytic process and indicate that the charge on the copper-bound carbon and delocalization of charge onto the aryl ring control the rate of the alkene insertion and the regioselectivity of the catalytic reactions of vinylarenes.
Collapse
Affiliation(s)
- Yumeng Xi
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - John F Hartwig
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California , Berkeley, California 94720, United States
| |
Collapse
|