1
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Kaur M, Adhikari M, Manar KK, Yogesh Y, Prakash D, Singh S. BICAAC-Derived Covalent and Cationic Ir(I) Complexes: Application of Ir(BICAAC)Cl(COD) Complexes as Catalysts for Transfer Hydrogenation and Hydrosilylation Reactions. Inorg Chem 2024; 63:1513-1523. [PMID: 38192194 DOI: 10.1021/acs.inorgchem.3c01914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
The ambiphilic bicyclic (alkyl)(amino)carbenes (Me/iPrBICAAC) upon reaction with [IrCl(COD)]2 smoothly afford mononuclear Ir(I) complexes that have been spectroscopically and structurally characterized. These complexes exhibit good catalytic activity for transfer hydrogenation (TH) of 4-chlorobenzaldehyde using isopropyl alcohol (iPrOH), with turnover frequency values ranging between 6269 and 8093 h-1. Choosing the covalent complex Ir(MeBICAAC)Cl(COD) as a catalyst, a wide array of carbonyls and imines functionalized with electron-withdrawing and electron-donating substituents have been surveyed and afforded their reduced products in moderate-to-good yields. No detachment of the BICAAC unit from the Ir center was observed upon prolonged heating of Ir(MeBICAAC)Cl(COD) in toluene-d8 or isopropyl alcohol-d8, which evidenced good thermal stability of the catalyst. Complex Ir(MeBICAAC)Cl(COD) was also found to be catalytically active for the hydrosilylation of a variety of aldehydes using triethylsilane (Et3SiH).
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Affiliation(s)
- Mandeep Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Manu Adhikari
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Krishna K Manar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Yuvraj Yogesh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Darsana Prakash
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Sanjay Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
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2
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Genç S, Gülcemal S, Günnaz S, Çetinkaya B, Gülcemal D. Synthesis of α-Alkylated Ketones via Selective Epoxide Opening/Alkylation Reactions with Primary Alcohols. Org Lett 2021; 23:5229-5234. [PMID: 34143639 DOI: 10.1021/acs.orglett.1c01765] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A new method for converting terminal epoxides and primary alcohols into α-alkylated ketones under borrowing hydrogen conditions is reported. The procedure involves a one-pot epoxide ring opening and alkylation via primary alcohols in the presence of an N-heterocyclic carbene iridium(I) catalyst, under aerobic conditions, with water as the side product.
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Affiliation(s)
- Sertaç Genç
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
| | | | - Salih Günnaz
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
| | - Bekir Çetinkaya
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
| | - Derya Gülcemal
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
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3
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The synthesis of new PEPPSI-type N-heterocyclic carbene (NHC)-Pd(II) complexes bearing long alkyl chain as precursors for the synthesis of NHC-stabilized Pd(0) nanoparticles and their catalytic applications. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121633] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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The catalytic activity of new iridium(I) N-heterocyclic carbene complexes for hydrogen transfer reaction of ketones. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02734-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Martynova EA, Tzouras NV, Pisanò G, Cazin CSJ, Nolan SP. The “weak base route” leading to transition metal–N-heterocyclic carbene complexes. Chem Commun (Camb) 2021; 57:3836-3856. [DOI: 10.1039/d0cc08149c] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
N-Heterocyclic carbenes (NHCs) are nowadays ubiquitous in organometallic chemistry and catalysis. A simple synthetic route to these is presented.
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Affiliation(s)
- Ekaterina A. Martynova
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Nikolaos V. Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Gianmarco Pisanò
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Catherine S. J. Cazin
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Steven P. Nolan
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
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6
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Arslan B, Gülcemal S. α-Alkylation of arylacetonitriles with primary alcohols catalyzed by backbone modified N-heterocyclic carbene iridium(i) complexes. Dalton Trans 2021; 50:1788-1796. [DOI: 10.1039/d0dt04082g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
α-Alkylation of arylacetonitriles with primary alcohols was achieved by using backbone-modified NHC–IrI complexes as catalysts with turnover numbers of up to 960.
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Affiliation(s)
- Burcu Arslan
- Department of Chemistry
- Ege University
- 35100 Bornova
- Turkey
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7
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8
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Appel S, Brüggemann P, Ganter C. A tropylium annulated N-heterocyclic carbene. Chem Commun (Camb) 2020; 56:9020-9023. [PMID: 32639486 DOI: 10.1039/d0cc04482b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Derivatives of the cationic tropylium annulated imidazolylidene ITrop+ are obtained by hydride abstraction from related cycloheptatriene compounds. Spectroscopic, structural and theoretical data indicate that, as a cationic relative of benzimidazolylidenes, ITrop+ has highly reduced σ-donor and strong π-acceptor character.
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Affiliation(s)
- Sebastian Appel
- Institut für Anorganische Chemie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany.
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9
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Genç S, Gülcemal S, Günnaz S, Çetinkaya B, Gülcemal D. Iridium-Catalyzed Alkylation of Secondary Alcohols with Primary Alcohols: A Route to Access Branched Ketones and Alcohols. J Org Chem 2020; 85:9139-9152. [DOI: 10.1021/acs.joc.0c01099] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sertaç Genç
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
| | | | - Salih Günnaz
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
| | - Bekir Çetinkaya
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
| | - Derya Gülcemal
- Ege University, Chemistry Department, 35100 Bornova, Izmir, Turkey
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10
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Mwansa JM, Page MI. Catalysis, kinetics and mechanisms of organo-iridium enantioselective hydrogenation-reduction. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02147g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The synthesis of chiral molecules is of great importance to the pharmaceutical, agrochemical, flavour and fragrance industries.
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Affiliation(s)
| | - Michael I. Page
- School of Chemistry
- University of Edinburgh
- Edinburgh EH9 3FJ
- UK
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11
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Strong Solvent Effects on Catalytic Transfer Hydrogenation of Ketones with [Ir(cod)(NHC)(PR3)] Catalysts in 2-Propanol-Water Mixtures. Catalysts 2019. [DOI: 10.3390/catal10010017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The synthesis and characterization of the new Ir(I)-complexes [IrCl(cod)(Bnmim)], [Ir(cod)(emim)(PPh3)]Cl and [Ir(cod)(Bnmim)(mtppms)] are reported. The zwitterionic complexes [Ir(cod)(NHC)(mtppms)] and Na2[Ir(cod)(NHC)(mtppts)] (NHC = emim, bmim or Bnmim; mtppms-Na and mtppts-Na3 = sodium salts of mono- and trisulfonated triphenylphosphine, respectively) were found to be effective precatalysts for transfer hydrogenation of aromatic and aliphatic ketones in basic 2-propanol-water mixtures with initial turnover frequencies up to 510 h−1 at 80 °C, and their catalytic performances were compared to those of [IrCl(cod)(NHC)] complexes (NHC = emim, bmim, Bnmim, IMes) and [Ir(cod)(emim)(PPh3)]Cl. Three of the catalysts were characterized by single-crystal X-ray diffraction. The reaction rates of the transfer hydrogenation of acetophenone and benzophenone showed strong dependence on the water concentration of the solvent, indicating preferential solvation of the catalytically active metal complexes.
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12
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Genç S, Arslan B, Gülcemal S, Günnaz S, Çetinkaya B, Gülcemal D. Iridium(I)-Catalyzed C–C and C–N Bond Formation Reactions via the Borrowing Hydrogen Strategy. J Org Chem 2019; 84:6286-6297. [DOI: 10.1021/acs.joc.9b00632] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Sertaç Genç
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
| | - Burcu Arslan
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
| | | | - Salih Günnaz
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
| | - Bekir Çetinkaya
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
| | - Derya Gülcemal
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
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13
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Transfer hydrogenation of ketones catalyzed by a trinuclear Ni(II) complex of a Schiff base functionalized N-heterocyclic carbene ligand. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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14
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Günnaz S, Gökçe AG, Türkmen H. Synthesis of bimetallic complexes bridged by 2,6-bis(benzimidazol-2-yl) pyridine derivatives and their catalytic properties in transfer hydrogenation. Dalton Trans 2018; 47:17317-17328. [PMID: 30475380 DOI: 10.1039/c8dt03178a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A series of binuclear rhodium(i) and iridium(i) complexes with 2,6-bis(benzimidazol-2-yl) pyridine (bzimpy) derivatives were synthesized and characterized by elemental analysis and spectroscopic methods. The molecular and crystal structures of complex 3d were determined by the single crystal X-ray diffraction technique. Their monometallic analogues were prepared to compare the catalytic properties of the bimetallic complexes. To determine the catalyst properties that result in a cooperative, bimetallic enhancement of the reaction rate, the systematic variation of the intermetallic distance and the ligand donor properties of the bimetallic complexes were explored based on the transfer hydrogenation reactions of ketones.
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Affiliation(s)
- Salih Günnaz
- Ege University, Department of Chemistry, 35100 Izmir, Turkey.
| | | | - Hayati Türkmen
- Ege University, Department of Chemistry, 35100 Izmir, Turkey.
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15
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Balamurugan G, Balaji S, Ramesh R, Bhuvanesh NS. Synthesis and Structures of Arene Ruthenium (II)-NHC Complexes: Efficient Catalytic α-alkylation of ketones via Hydrogen Auto Transfer Reaction. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4696] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gunasekaran Balamurugan
- Centre for organometallic Chemistry, School of Chemistry; Bharathidasan University; Tiruchirapalli 620024 Tamilnadu India
| | - Sundarraman Balaji
- Centre for organometallic Chemistry, School of Chemistry; Bharathidasan University; Tiruchirapalli 620024 Tamilnadu India
| | - Rengan Ramesh
- Centre for organometallic Chemistry, School of Chemistry; Bharathidasan University; Tiruchirapalli 620024 Tamilnadu India
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16
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17
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Richards JE, Hooper AJJ, Bayfield OW, Cockett MCR, Dear GJ, Holmes AJ, John RO, Mewis RE, Pridmore N, Roberts AD, Whitwood AC, Duckett SB. Using hyperpolarised NMR and DFT to rationalise the unexpected hydrogenation of quinazoline to 3,4-dihydroquinazoline. Chem Commun (Camb) 2018; 54:10375-10378. [PMID: 30152480 PMCID: PMC6136267 DOI: 10.1039/c8cc04826f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022]
Abstract
PHIP and SABRE hyperpolarized NMR methods are used to follow the unexpected metal-catalysed hydrogenation of quinazoline (Qu) to 3,4-dihydroquinazoline as the sole product. A solution of [IrCl(IMes)(COD)] in dichloromethane reacts with H2 and Qu to form [IrCl(H)2(IMes)(Qu)2] (2). The addition of methanol then results in its conversion to [Ir(H)2(IMes)(Qu)3]Cl (3) which catalyses the hydrogenation reaction. Density functional theory calculations are used to rationalise a proposed outer sphere mechanism in which (3) converts to [IrCl(H)2(H2)(IMes)(Qu)2]Cl (4) and neutral [Ir(H)3(IMes)(Qu)2] (6), both of which are involved in the formation of 3,4-dihydroquinazoline via the stepwise transfer of H+ and H-, with H2 identified as the reductant. Successive ligand exchange in 3 results in the production of thermodynamically stable [Ir(H)2(IMes)(3,4-dihydroquinazoline)3]Cl (5).
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Affiliation(s)
- Josh E. Richards
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Alexander J. J. Hooper
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Oliver W. Bayfield
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Martin C. R. Cockett
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Gordon J. Dear
- GlaxoSmithKline Research and Development Ltd
, Park Road
,
Ware
, Hertfordshire
SG12 0DP
, UK
| | - A. Jonathon Holmes
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Richard O. John
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Ryan E. Mewis
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Natalie Pridmore
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Andy D. Roberts
- GlaxoSmithKline Research and Development Ltd
, Park Road
,
Ware
, Hertfordshire
SG12 0DP
, UK
| | - Adrian C. Whitwood
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
| | - Simon B. Duckett
- Centre for Hyperpolarisation in Magnetic Resonance
, University of York
,
Heslington
, York
YO10 5NY
, UK
.
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18
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Özbozkurt İK, Gülcemal D, Günnaz S, Gökçe AG, Çetinkaya B, Gülcemal S. Enhanced Catalytic Activity of Oxygen-Tethered IrIII
NHC Complexes in Aqueous Transfer Hydrogenative Reductive Amination Reactions: Experimental Kinetic and Mechanistic Study. ChemCatChem 2018. [DOI: 10.1002/cctc.201800558] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Derya Gülcemal
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
| | - Salih Günnaz
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
| | - Aytaç Gürhan Gökçe
- Department of Physics; Adnan Menderes University; 09010 Efeler, Aydın Turkey
| | - Bekir Çetinkaya
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
| | - Süleyman Gülcemal
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
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19
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Iglesias M, Oro LA. A leap forward in iridium-NHC catalysis: new horizons and mechanistic insights. Chem Soc Rev 2018; 47:2772-2808. [PMID: 29557434 DOI: 10.1039/c7cs00743d] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review summarises the most recent advances in Ir-NHC catalysis while revisiting all the classical reactions in which this type of catalyst has proved to be active. The influence of the ligand system and, in particular, the impact of the NHC ligand on the activity and selectivity of the reaction have been analysed, accompanied by an examination of the great variety of catalytic cycles hitherto reported. The reaction mechanisms so far proposed are described and commented on for each individual process. Moreover, some general considerations that attempt to explain the influence of the NHC from a mechanistic viewpoint are presented at the end of the review. The first sections are dedicated to the most widely explored reactions that use Ir-NHCs, i.e., hydrogenation and transfer hydrogenation, for which a general overview that tries to compile all the Ir-NHC catalysts hitherto reported for these processes is provided. The next sections deal with hydrogen borrowing, hydrosilylation, water splitting, dehydrogenation (of alcohols, alkanes, aminoboranes and formic acid), hydrogen isotope exchange (HIE), signal amplification by reversible exchange and C-H bond functionalisation (silylation and borylation). The last section compiles a series of reactions somewhat less explored for Ir-NHC catalysts that include the hydroalkynylation of imines, hydroamination, diboration of olefins, hydrolysis and methanolysis of silanes, arylation of aldehydes with boronic acids, addition of aroyl chlorides to alkynes, visible light driven reactions, isomerisation of alkenes, asymmetric intramolecular allylic amination and reactions that employ heterometallic catalysts containing at least one Ir-NHC unit.
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Affiliation(s)
- Manuel Iglesias
- Departamento Química Inorgánica - ISQCH, Universidad de Zaragoza - CSIC, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Luis A Oro
- Departamento Química Inorgánica - ISQCH, Universidad de Zaragoza - CSIC, Pedro Cerbuna 12, 50009 Zaragoza, Spain. and King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia
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20
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Huynh HV. Electronic Properties of N-Heterocyclic Carbenes and Their Experimental Determination. Chem Rev 2018; 118:9457-9492. [DOI: 10.1021/acs.chemrev.8b00067] [Citation(s) in RCA: 446] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Han Vinh Huynh
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
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21
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Genç S, Günnaz S, Çetinkaya B, Gülcemal S, Gülcemal D. Iridium(I)-Catalyzed Alkylation Reactions To Form α-Alkylated Ketones. J Org Chem 2018; 83:2875-2881. [DOI: 10.1021/acs.joc.8b00043] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sertaç Genç
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
| | - Salih Günnaz
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
| | - Bekir Çetinkaya
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
| | | | - Derya Gülcemal
- Chemistry Department, Ege University, Bornova, 35100 Izmir, Turkey
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22
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Navarro M, Smith CA, Albrecht M. Enhanced Catalytic Activity of Iridium(III) Complexes by Facile Modification of C,N-Bidentate Chelating Pyridylideneamide Ligands. Inorg Chem 2017; 56:11688-11701. [PMID: 28898071 DOI: 10.1021/acs.inorgchem.7b01654] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A set of aryl-substituted pyridylideneamide (PYA) ligands with variable donor properties owing to a pronounced zwitterionic and a neutral diene-type resonance structure were used as electronically flexible ligands at a pentamethylcyclopentadienyl (Cp*) iridium center. The straightforward synthesis of this type of ligand allows for an easy incorporation of donor substituents such as methoxy groups in different positions of the phenyl ring of the C,N-bidentate chelating PYA. These modifications considerably enhance the catalytic activity of the coordinated iridium center toward the catalytic aerobic transfer hydrogenation of carbonyls and imines as well as the hydrosilylation of phenylacetylene. Moreover, these PYA iridium complexes catalyze the base-free transfer hydrogenation of aldehydes, and to a lesser extent also of ketones. Under standard transfer hydrogenation conditions including base, aldehydes are rapidly oxidized to carboxylic acids rather than reduced to the corresponding alcohol, as is observed under base-free conditions.
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Affiliation(s)
- Miquel Navarro
- Department of Chemistry and Biochemistry, University of Bern , Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Christene A Smith
- Department of Chemistry and Biochemistry, University of Bern , Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Martin Albrecht
- Department of Chemistry and Biochemistry, University of Bern , Freiestrasse 3, CH-3012 Bern, Switzerland
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23
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Vivancos Á, Albrecht M. Influence of the Linker Length and Coordination Mode of (Di)Triazolylidene Ligands on the Structure and Catalytic Transfer Hydrogenation Activity of Iridium(III) Centers. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00140] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ángela Vivancos
- Departement für Chemie
und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Martin Albrecht
- Departement für Chemie
und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
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24
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Shee S, Paul B, Kundu S. Counter Anion Controlled Reactivity Switch in Transfer Hydrogenation: A Case Study between Ketones and Nitroarenes. ChemistrySelect 2017. [DOI: 10.1002/slct.201601929] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sujan Shee
- Department of Chemistry, IIT Kanpur; Kanpur- 208016, UP India
| | - Bhaskar Paul
- Department of Chemistry, IIT Kanpur; Kanpur- 208016, UP India
| | - Sabuj Kundu
- Department of Chemistry, IIT Kanpur; Kanpur- 208016, UP India
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25
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Kaufhold S, Petermann L, Sorsche D, Rau S. “Trojan Horse” Effect in Photocatalysis-How Anionic Silver Impurities Influence Apparent Catalytic Activity. Chemistry 2017; 23:2271-2274. [DOI: 10.1002/chem.201605391] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Simon Kaufhold
- Inorganic Chemistry I; Ulm University; Albert-Einstein-Allee 11 8908 Ulm Germany
| | - Lydia Petermann
- Inorganic Chemistry I; Ulm University; Albert-Einstein-Allee 11 8908 Ulm Germany
| | - Dieter Sorsche
- Inorganic Chemistry I; Ulm University; Albert-Einstein-Allee 11 8908 Ulm Germany
| | - Sven Rau
- Inorganic Chemistry I; Ulm University; Albert-Einstein-Allee 11 8908 Ulm Germany
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26
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Bavykina AV, Mautscke HH, Makkee M, Kapteijn F, Gascon J, Llabrés i Xamena FX. Base free transfer hydrogenation using a covalent triazine framework based catalyst. CrystEngComm 2017. [DOI: 10.1039/c7ce00561j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Isomerisation of allylic alcohols to saturated ketones can be efficiently catalysed by a heterogeneous molecular system resulting from IrIIICp* anchoring to a covalent triazine framework.
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Affiliation(s)
- A. V. Bavykina
- Catalysis Engineering
- Delft University of Technology
- Delft
- Netherlands
| | - H.-H. Mautscke
- Instituto de Tecnologia Quimica CSIC-UPV
- Universidad Politecnica de Valencia
- Consejo Superior de Investigaciones Científicas
- Valencia
- Spain
| | - M. Makkee
- Catalysis Engineering
- Delft University of Technology
- Delft
- Netherlands
| | | | - J. Gascon
- Catalysis Engineering
- Delft University of Technology
- Delft
- Netherlands
| | - F. X. Llabrés i Xamena
- Instituto de Tecnologia Quimica CSIC-UPV
- Universidad Politecnica de Valencia
- Consejo Superior de Investigaciones Científicas
- Valencia
- Spain
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27
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Kerner C, Straub SD, Sun Y, Thiel WR. A Rapid and Additive-Free Ruthenium-Catalyzed Reductive Amination of Aromatic Aldehydes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600515] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christian Kerner
- Fachbereich Chemie; TU Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Sascha-Dominic Straub
- Fachbereich Chemie; TU Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Y. Sun
- Fachbereich Chemie; TU Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Werner R. Thiel
- Fachbereich Chemie; TU Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
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28
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Wills M. Imino Transfer Hydrogenation Reductions. Top Curr Chem (Cham) 2016; 374:14. [DOI: 10.1007/s41061-016-0013-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 02/13/2016] [Indexed: 10/22/2022]
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29
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Rangel-Rangel E, Verde-Sesto E, Rasero-Almansa AM, Iglesias M, Sánchez F. Porous aromatic frameworks (PAFs) as efficient supports for N-heterocyclic carbene catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00597g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymeric aromatic frameworks (PAFs), easily obtained from organic platforms, as excellent supports to yield robust well-defined organometallic heterogenized catalysts.
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Affiliation(s)
| | - Ester Verde-Sesto
- Instituto de Ciencia de Materiales de Madrid
- ICMM-CSIC
- 28049 Madrid
- Spain
| | | | - Marta Iglesias
- Instituto de Ciencia de Materiales de Madrid
- ICMM-CSIC
- 28049 Madrid
- Spain
| | - Félix Sánchez
- Instituto de Química Orgánica
- IQOG-CSIC
- 28006 Madrid
- Spain
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30
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Volpe A, Baldino S, Tubaro C, Baratta W, Basato M, Graiff C. Dinuclear Di(N-heterocyclic carbene) Iridium(III) Complexes as Catalysts in Transfer Hydrogenation. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Banach Ł, Guńka PA, Górska D, Podlewska M, Zachara J, Buchowicz W. Synthesis, Structures and Properties of Half-Sandwich Nickel(II) Complexes with Backbone-Modified NHC Ligands. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500993] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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32
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Gülcemal D, Gülcemal S, Robertson CM, Xiao J. A New Phenoxide Chelated IrIII N-Heterocyclic Carbene Complex and Its Application in Reductive Amination Reactions. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00625] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Derya Gülcemal
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
- Department
of Chemistry, Ege University, 35100 Bornova-Izmir, Turkey
| | - Süleyman Gülcemal
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
- Department
of Chemistry, Ege University, 35100 Bornova-Izmir, Turkey
| | - Craig M. Robertson
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
| | - Jianliang Xiao
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
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33
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Affiliation(s)
- Dong Wang
- ISM, Université de Bordeaux, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Didier Astruc
- ISM, Université de Bordeaux, 351 Cours de la Libération, 33405 Talence Cedex, France
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34
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Savka R, Plenio H. Facile synthesis of [(NHC)MX(cod)] and [(NHC)MCl(CO)2] (M = Rh, Ir; X = Cl, I) complexes. Dalton Trans 2015; 44:891-3. [PMID: 25437103 DOI: 10.1039/c4dt03449j] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The reactions of [MCl(cod)]2 (M = Rh, Ir) with different NHC·HX (X = Cl, I), K2CO3 in technical grade acetone under air provide simple access to various [(NHC)MX(cod)] complexes; a facile one-pot synthesis of [(NHC)MCl(CO)2] (M = Rh, Ir) is also reported.
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Affiliation(s)
- R Savka
- Organometallic Chemistry, Alarich-Weiss-Str. 12, Fachbereich Chemie, TU Darmstadt, 64287 Darmstadt, Germany.
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35
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Catalytic activity of Ru/tetrahydropyrimidinium salts system for transfer hydrogenation reactions. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3322] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2013. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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37
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Iglesias D, Sabater S, Azua A, Mata JA. Catalytic applications of magnetic nanoparticles functionalized using iridium N-heterocyclic carbene complexes. NEW J CHEM 2015. [DOI: 10.1039/c5nj00803d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The development of a synthetic modular methodology for the preparation of catalytic materials based on magnetic nanoparticles with iridium complexes and their application to transfer hydrogenation.
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Affiliation(s)
- Diego Iglesias
- Departamento de Química Inorgánica y Orgánica
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- Castellón
- Spain
| | - Sara Sabater
- Departamento de Química Inorgánica y Orgánica
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- Castellón
- Spain
| | - Arturo Azua
- Departamento de Química Inorgánica y Orgánica
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- Castellón
- Spain
| | - Jose A. Mata
- Departamento de Química Inorgánica y Orgánica
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- Castellón
- Spain
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38
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Riener K, Bitzer MJ, Pöthig A, Raba A, Cokoja M, Herrmann WA, Kühn FE. On the Concept of Hemilability: Insights into a Donor-Functionalized Iridium(I) NHC Motif and Its Impact on Reactivity. Inorg Chem 2014; 53:12767-77. [DOI: 10.1021/ic5016324] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Korbinian Riener
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Mario J. Bitzer
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Alexander Pöthig
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Andreas Raba
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Mirza Cokoja
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Wolfgang A. Herrmann
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Fritz E. Kühn
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
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39
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Horváth H, Kathó Á, Udvardy A, Papp G, Szikszai D, Joó F. New Water-Soluble Iridium(I)–N-Heterocyclic Carbene–Tertiary Phosphine Mixed-Ligand Complexes as Catalysts of Hydrogenation and Redox Isomerization. Organometallics 2014. [DOI: 10.1021/om5006148] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Henrietta Horváth
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms
Research Group and ‡Department of Physical Chemistry, University of Debrecen, P.O. Box 7, H-4010 Debrecen, Hungary
| | - Ágnes Kathó
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms
Research Group and ‡Department of Physical Chemistry, University of Debrecen, P.O. Box 7, H-4010 Debrecen, Hungary
| | - Antal Udvardy
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms
Research Group and ‡Department of Physical Chemistry, University of Debrecen, P.O. Box 7, H-4010 Debrecen, Hungary
| | - Gábor Papp
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms
Research Group and ‡Department of Physical Chemistry, University of Debrecen, P.O. Box 7, H-4010 Debrecen, Hungary
| | - Dorina Szikszai
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms
Research Group and ‡Department of Physical Chemistry, University of Debrecen, P.O. Box 7, H-4010 Debrecen, Hungary
| | - Ferenc Joó
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms
Research Group and ‡Department of Physical Chemistry, University of Debrecen, P.O. Box 7, H-4010 Debrecen, Hungary
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40
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Michelet B, Bour C, Gandon V. Gallium-assisted transfer hydrogenation of alkenes. Chemistry 2014; 20:14488-92. [PMID: 25213294 DOI: 10.1002/chem.201404139] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Indexed: 11/08/2022]
Abstract
We report a rare case of alkene transfer hydrogenation using a main-group compound instead of a transition-metal complex as catalyst. We disclosed that 1,4-cyclohexadiene can be used as H2 surrogate towards olefin reduction in the presence of [IPrGaCl2 ][SbF6 ]. Hydrogenative cyclizations have also been carried out because this cationic gallium complex is also a potent hydroarylation catalyst.
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Affiliation(s)
- Bastien Michelet
- Université Paris-Sud, ICMMO (UMR CNRS 8182), LabEx CHARMAAAT, 91405 Orsay cedex (France), Fax: (+ 33)169154747, Homepage: www.polycata.u-psud.fr
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41
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Sharma AK, Joshi H, Sharma KN, Gupta PL, Singh AK. 2-Propanol vs Glycerol as Hydrogen Source in Catalytic Activation of Transfer Hydrogenation with (η6-Benzene)ruthenium(II) Complexes of Unsymmetrical Bidentate Chalcogen Ligands. Organometallics 2014. [DOI: 10.1021/om500579r] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Alpesh K. Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi − 110016, India
| | - Hemant Joshi
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi − 110016, India
| | - Kamal Nayan Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi − 110016, India
| | - Pancham L. Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi − 110016, India
| | - Ajai K. Singh
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi − 110016, India
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42
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Gülcemal D, Gökçe AG, Gülcemal S, Çetinkaya B. Hydroxyl and ester functionalized N-heterocyclic carbene complexes of iridium(i): efficient catalysts for transfer hydrogenation reactions. RSC Adv 2014. [DOI: 10.1039/c4ra02993c] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Iridium(i)–NHC catalyzed transfer hydrogenation reaction of aldehydes and ketones with up to 10 000 TON has been achieved.
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