1
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Kulikovskaya NS, Denisova EA, Ananikov VP. A novel approach to study catalytic reactions via electrophoretic NMR on the example of Pd/NHC-catalyzed Mizoroki-Heck cross-coupling reaction. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2022; 60:954-962. [PMID: 35727217 DOI: 10.1002/mrc.5295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 05/17/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
Investigation of catalytic reactions using nuclear magnetic resonance (NMR) is a crucial task, which is often challenging to perform due to rather complex transformations at the metal center. In this work, it was shown that electrophoretic NMR can be a suitable method for studying catalytic reactions and for observing the changes in the catalyst nature. As an important example involving palladium catalysts with N-heterocyclic carbine ligands (NHCs), the breakage of the Pd-NHC bond can occur during the catalytic process. Electrophoretic NMR allows the distinction of compounds in the spectra depending on the charge, thus bringing new opportunities to mechanistic studies. Here, we present independent evidence of R-NHC product formation in the Pd-catalyzed Mizoroki-Heck reaction-the key process for catalyst change from the molecular to nano-scale type.
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Affiliation(s)
| | - Ekaterina A Denisova
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Valentine P Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
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2
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Rao MN, Manne R, Tanski JM, Butcher R, Ghosh P. One pot synthesis of propargylamines by three component amine-aldehyde-acetylene (A3) coupling catalyzed by neutral Ag(I) and Au(I) and cationic Pd(II) and Ni(II) complexes of a pincer N-heterocyclic carbene. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Vanston CR, Nicholls TP, Bissember AC, Gardiner MG, Ho CC. Cationic Charge-Appended Abnormal Carbenes: Synthesis and Study of Electronically Modified Abnormal N-Heterocyclic Carbenes. Inorg Chem 2021; 61:622-632. [PMID: 34941242 DOI: 10.1021/acs.inorgchem.1c03336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A range of palladium complexes featuring electronically modified, imidazole-based abnormal N-heterocyclic carbene (aNHC) ligands have been prepared in the hopes of accessing a new class of cationic aNHC ligands electronically distinct from normal NHCs and aNHCs. These palladium complexes represent the first examples of transition metal-ligated aNHC complexes featuring a cationic moiety adjacent to the abnormal carbene center. It was anticipated that these design principles could facilitate electron transfer between the imidazolinylidene and the cationic heterocycle, thus reducing the electron density at the abnormal carbene center. However, this case study suggests that greater conformational restrictions that allow for heterocycle coplanarity are necessary to achieve significant electron transfer and enable access to a new class of cationic charge-appended aNHCs with unique electronic properties.
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Affiliation(s)
- Catriona R Vanston
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Thomas P Nicholls
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Alex C Bissember
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Michael G Gardiner
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Curtis C Ho
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
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4
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Tomar V, Sharma C, Nemiwal M, Joshi RK. Synthesis of novel ferrocenated enynes via the Sonogashira coupling of ferrocenated vinyllic chlorides and alkyne in the catalytic presence of selenated NHC-Pd(II) full pincer complex under Cu and amine free aerobic conditions. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Highly efficient aqueous-phase Sonogashira coupling catalyzed by Pd-PEEPSI/PPh3 under aerobic condition. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01950-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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6
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Park DA, Byun S, Ryu JY, Lee J, Lee J, Hong S. Abnormal N-Heterocyclic Carbene–Palladium Complexes for the Copolymerization of Ethylene and Polar Monomers. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00802] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Da-Ae Park
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seunghwan Byun
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Jinyoung Lee
- Catalyst R&D, LG Chem Research Park, 188 Munji-ro, Yuseong-gu, Daejeon 34122, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Sukwon Hong
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
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7
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Tyagi A, Reshi NUD, Daw P, Bera JK. Palladium complexes with an annellated mesoionic carbene (MIC) ligand: catalytic sequential Sonogashira coupling/cyclization reaction for one-pot synthesis of benzofuran, indole, isocoumarin and isoquinolone derivatives. Dalton Trans 2020; 49:15238-15248. [DOI: 10.1039/d0dt02918a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pd(ii) complex containing a mesoionic carbene and phosphine ligands is an efficient catalyst for tandem coupling/cyclization reaction.
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Affiliation(s)
- Akshi Tyagi
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Noor U Din Reshi
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Prosenjit Daw
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Jitendra K. Bera
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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8
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Kaur M, Patra K, Din Reshi NU, Bera JK. Base-Controlled Directed Synthesis of Metal–Methyleneimidazoline (MIz) and Metal–Mesoionic Carbene (MIC) Compounds. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mandeep Kaur
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Kamaless Patra
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Noor U Din Reshi
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jitendra K. Bera
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
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9
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Modak S, Borah S, Prakasham A, Shaikh MM, Butcher RJ, Gangwar M, Ghosh P. A comparison between (a/n-NHC)PdX2(pyridine) and (a/n-NHC)2PdX2 (X = I, Cl) type complexes of abnormal fused-bicyclic imidazo[1,2-a]pyridine based N-heterocyclic carbene (a-NHC) and of normal imidazole based N-heterocyclic carbene (n-NHC) ligands in the Suzuki-Miyaura coupling reactions. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Ramasamy B, Prakasham AP, Gangwar MK, Ghosh P. 1,4‐Conjugate Addition of Aryl boronic Acids on Cyclohexenone as Catalyzed by Rhodium(I) Complexes of
C
2
‐Symmetric Bioxazoline Fused N‐heterocyclic Carbenes. ChemistrySelect 2019. [DOI: 10.1002/slct.201902408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Balasubramaniyam Ramasamy
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai 400 076
- BASF Chemicals India Pvt. LtdInnovation Campus Navi Mumbai 400 705
| | - A. P. Prakasham
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai 400 076
| | - Manoj Kumar Gangwar
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai 400 076
| | - Prasenjit Ghosh
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai 400 076
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11
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Lee YY, Zseng HW, Tsai ZH, Su YS, Hu CH, Lee HM. Isomeric Palladium Complexes Bearing Imidazopyridine-Based Abnormal Carbene Ligands: Synthesis, Characterization, and Catalytic Activity in Direct C–H Arylation Reaction. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00806] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yan-Yi Lee
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Han-Wei Zseng
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Zong-Han Tsai
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Yong-Siang Su
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Ching-Han Hu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
| | - Hon Man Lee
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50058
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12
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Vivancos Á, Segarra C, Albrecht M. Mesoionic and Related Less Heteroatom-Stabilized N-Heterocyclic Carbene Complexes: Synthesis, Catalysis, and Other Applications. Chem Rev 2018; 118:9493-9586. [PMID: 30014699 DOI: 10.1021/acs.chemrev.8b00148] [Citation(s) in RCA: 318] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mesoionic carbenes are a subclass of the family of N-heterocyclic carbenes that generally feature less heteroatom stabilization of the carbenic carbon and hence impart specific donor properties and reactivity schemes when coordinated to a transition metal. Therefore, mesoionic carbenes and their complexes have attracted considerable attention both from a fundamental point of view as well as for application in catalysis and beyond. As a follow-up of an earlier Chemical Reviews overview from 2009, the organometallic chemistry of N-heterocyclic carbenes with reduced heteroatom stabilization is compiled for the 2008-2017 period, including specifically the chemistry of complexes containing 1,2,3-triazolylidenes, 4-imidazolylidenes, and related 5-membered N-heterocyclic carbenes with reduced heteratom stabilization such as (is)oxazolylidenes, pyrrazolylidenes, and thiazolylidenes, as well as pyridylidenes as 6-membered N-heterocyclic carbenes with reduced heteroatom stabilization. For each ligand subclass, metalation strategies, electronic and steric properties, and applications, in particular, in metal-mediated catalysis, are compiled. Mesoionic carbenes demonstrate particularly high activity in (water) oxidation, hydrogen transfer reactions, and cyclization reactions. Unique features of these ligands are identified such as their dipolar structure, their specific donor properties, as well as stability aspects of the ligand and the complexes, which provides opportunities for further research.
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Affiliation(s)
- Ángela Vivancos
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland.,Departamento de Química Inorgánica , Universidad de Murcia , Apartado 4021 , 30071 Murcia , Spain
| | - Candela Segarra
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland.,Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas , Avenida de los Naranjos s/n , 46022 Valencia , Spain
| | - Martin Albrecht
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland
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13
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Ghanbari B, Shahhoseini L, Hosseini H, Bagherzadeh M, Owczarzak A, Kubicki M. Synthesis of Pd(II) large dinuclear macrocyclic complex tethered through two dipyridine-bridged aza-crowns as an efficient copper- and phosphine-free Sonogashira catalytic reaction. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Mahule SR, Gangwar MK, Vishnoi P. Neutral Binuclear Ag(I) and Au(I) N-Heterocyclic Carbene Complexes of Axially Chiral and Racemic Scaffolds: Synthesis and Characterization. ChemistrySelect 2018. [DOI: 10.1002/slct.201800189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Sonali Ramgopal Mahule
- SRM; Mahule; Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra Postal Code 400076 India
| | - Manoj Kumar Gangwar
- MKG; Gangwar; Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, Uttar Pradesh Postal Code 208016 India
| | - Pratap Vishnoi
- PV; Vishnoi; Department of Science and Technology; New Nano Mission; Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P. O.; Bangalore, Karnataka Postal Code 560064 India
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15
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Touj N, Yaşar S, Özdemir N, Hamdi N, Özdemir İ. Sonogashira cross-coupling reaction catalysed by mixed NHC-Pd-PPh 3 complexes under copper free conditions. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.01.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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16
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Kumar D, Prakasham AP, Das S, Datta A, Ghosh P. Cyanosilylation of Aromatic Aldehydes by Cationic Ruthenium(II) Complexes of Benzimidazole-Derived O-Functionalized N-Heterocyclic Carbenes at Ambient Temperature under Solvent-Free Conditions. ACS OMEGA 2018; 3:1922-1938. [PMID: 31458504 PMCID: PMC6641528 DOI: 10.1021/acsomega.7b02090] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 01/30/2018] [Indexed: 05/03/2023]
Abstract
A series of ruthenium complexes, namely, [{1-(N-R1-2-acetamido)-3-(R2)-benzimidazol-2-ylidine}Ru(p-cymene)Cl]Cl, where {R1 = 2,6-(i-Pr)2C6H3, R2 = i-Pr (1c); R1 = 2,6-(i-Pr)2C6H3, R2 = Et (2c); R1 = 2,4,6-(CH3)3C6H2, R2 = Et (3c)}, of benzimidazole-derived N/O-functionalized N-heterocyclic carbene ligands successfully carried out the cyanosilylation reaction of aromatic aldehydes and heteroaryl aldehydes with trimethylsilyl cyanide, providing good to excellent yields (ca. 60-95%) at room temperature under solvent-free condition. The ruthenium (1-3)c complexes were synthesized from the silver (1-3)b analogues in ca. 67-80% yields. The silver (1-3)b complexes exhibited an argentophilic d 10···d 10 interaction in its dinuclear macrometallacyclic motif, as observed by a short Ag···Ag contact of 3.1894(3) Å in single-crystal X-ray diffraction studies for a representative silver complex 2b and also in photoluminescence studies that showed characteristic emission band(s) at ca. 534-536 nm in the CHCl3 solution and at ca. 482-487 and 530-533 nm in the solid state.
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17
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Dehimat ZI, Yaşar S, Tebbani D, Özdemir İ. Sonogashira cross-coupling reaction catalyzed by N-heterocyclic carbene-Pd(II)-PPh3 complexes under copper free and aerobic conditions. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.048] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Ramasamy B, Kumar Gangwar M, Ghosh P. Chiral Oxazolidine-Fused N-Heterocyclic Carbene Complexes of Rhodium and Iridium and Their Utility in the Asymmetric Transfer Hydrogenation of Ketones. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700303] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Balasubramaniyam Ramasamy
- BASF Chemicals India Pvt. Ltd. Chandivali 400072 Mumbai India
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
| | - Manoj Kumar Gangwar
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
| | - Prasenjit Ghosh
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
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19
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Rottschäfer D, Schürmann CJ, Lamm JH, Paesch AN, Neumann B, Ghadwal RS. Abnormal-NHC Palladium(II) Complexes: Rational Synthesis, Structural Elucidation, and Catalytic Activity. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00662] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Christian J. Schürmann
- Institut
für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse
4, D-37077 Göttingen, Germany
| | | | - Alexander N. Paesch
- Institut
für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse
4, D-37077 Göttingen, Germany
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20
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Experimental and Mechanistic Exploration of Zn-Catalyzed Sonogashira-type Cross-Coupling Reactions. ChemistrySelect 2016. [DOI: 10.1002/slct.201600668] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Novel benzimidazol-2-ylidene carbene precursors and their silver(I) complexes: Potential antimicrobial agents. Bioorg Med Chem 2016; 24:3649-56. [DOI: 10.1016/j.bmc.2016.06.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 06/02/2016] [Indexed: 11/20/2022]
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22
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Mikhaylov VN, Sorokoumov VN, Korvinson KA, Novikov AS, Balova IA. Synthesis and Simple Immobilization of Palladium(II) Acyclic Diaminocarbene Complexes on Polystyrene Support as Efficient Catalysts for Sonogashira and Suzuki–Miyaura Cross-Coupling. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00144] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Vladimir N. Mikhaylov
- St. Petersburg State University, Institute of
Chemistry, 7/9 Universitetskaya
nab., St. Petersburg 199034, Russia
| | - Viktor N. Sorokoumov
- St. Petersburg State University, Institute of
Chemistry, 7/9 Universitetskaya
nab., St. Petersburg 199034, Russia
| | - Kirill A. Korvinson
- St. Petersburg State University, Institute of
Chemistry, 7/9 Universitetskaya
nab., St. Petersburg 199034, Russia
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Alexander S. Novikov
- St. Petersburg State University, Institute of
Chemistry, 7/9 Universitetskaya
nab., St. Petersburg 199034, Russia
| | - Irina A. Balova
- St. Petersburg State University, Institute of
Chemistry, 7/9 Universitetskaya
nab., St. Petersburg 199034, Russia
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23
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Liu M, Nieger M, Hübner EG, Schmidt A. Formation of N-Heterocyclic Carbenes by Tautomerization of Mesomeric Betaines: Cyclic Boron Adducts and Palladium Complexes From 2-(Imidazolium-1-yl)phenolates. Chemistry 2016; 22:5416-24. [PMID: 26929134 DOI: 10.1002/chem.201505042] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Indexed: 11/09/2022]
Abstract
2-(Imidazolium-1-yl)phenolates are conjugated heterocyclic mesomeric betaines in tautomeric equilibrium with the corresponding N-heterocyclic carbenes (NHCs), 3-(2-hydroxyphenyl)-imidazol-2-ylidenes. The carbene tautomers can be trapped as thiones (X-ray analysis). Moreover, bis(triphenylphosphine)palladium(II) dichloride in THF trapped the carbene tautomer as a palladium complex without participation of the phenolate group (X-ray analysis). The corresponding anionic NHCs, 2-phenolate-substituted imidazol-2-ylidenes, can be trapped by triethylborane or triphenylborane to form 4,4-diethyl- or 4,4-diphenyl-4H-benzo[e]imidazo[2,1-c][1,4,2]oxaza-borininium-4-ides, respectively (two X-ray analyses). These tricyclic systems are the first representatives of a new heterocyclic ring system. The results of DFT calculations concerning the HOMO/LUMO profiles and partial charges are also presented.
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Affiliation(s)
- Ming Liu
- Clausthal University of Technology, Institute of Organic Chemistry, Leibnizstrasse 6, 38678, Clausthal-Zellerfeld, Germany), Fax: (+49)-5323-722834
| | - Martin Nieger
- University of Helsinki, Laboratory of Inorganic Chemistry, Department of Chemistry, P.O. Box 55 (A.I. Virtasen aukio 1), 00014, Helsinki, Finland
| | - Eike G Hübner
- Clausthal University of Technology, Institute of Organic Chemistry, Leibnizstrasse 6, 38678, Clausthal-Zellerfeld, Germany), Fax: (+49)-5323-722834
| | - Andreas Schmidt
- Clausthal University of Technology, Institute of Organic Chemistry, Leibnizstrasse 6, 38678, Clausthal-Zellerfeld, Germany), Fax: (+49)-5323-722834.
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24
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Kumar A, Gangwar MK, Prakasham AP, Mhatre D, Kalita AC, Ghosh P. Accessing a Biologically Relevant Benzofuran Skeleton by a One-Pot Tandem Heck Alkynylation/Cyclization Reaction Using Well-Defined Palladium N-Heterocyclic Carbene Complexes. Inorg Chem 2016; 55:2882-93. [DOI: 10.1021/acs.inorgchem.5b02727] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - Prasenjit Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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25
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Akkoç S, Gök Y, İlhan İÖ, Kayser V. N-Methylphthalimide-substituted benzimidazolium salts and PEPPSI Pd-NHC complexes: synthesis, characterization and catalytic activity in carbon-carbon bond-forming reactions. Beilstein J Org Chem 2016; 12:81-8. [PMID: 26877810 PMCID: PMC4734419 DOI: 10.3762/bjoc.12.9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 01/05/2016] [Indexed: 02/01/2023] Open
Abstract
A series of novel benzimidazolium salts (1–4) and their pyridine enhanced precatalyst preparation stabilization and initiation (PEPPSI) themed palladium N-heterocyclic carbene complexes [PdCl2(NHC)(Py)] (5–8), where NHC = 1-(N-methylphthalimide)-3-alkylbenzimidazolin-2-ylidene and Py = 3-chloropyridine, were synthesized and characterized by means of 1H and 13C{1H} NMR, UV–vis (for 5–8), ESI-FTICR-MS (for 2, 4, 6–8) and FTIR spectroscopic methods and elemental analysis. The synthesized compounds were tested in Suzuki–Miyaura cross-coupling (for 1–8) and arylation (for 5–8) reactions. As catalysts, they demonstrated a highly efficient route for the formation of asymmetric biaryl compounds even though they were used in very low loading. For example, all compounds displayed good catalytic activity for the C–C bond formation of 4-tert-butylphenylboronic acid with 4-chlorotoluene.
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Affiliation(s)
- Senem Akkoç
- Faculty of Pharmacy, The University of Sydney, 2006 Sydney, Australia; Department of Chemistry, Faculty of Sciences, Erciyes University, Talas Street, 38039 Kayseri, Turkey
| | - Yetkin Gök
- Department of Chemistry, Faculty of Arts and Sciences, Inönü University, 44280 Malatya, Turkey
| | - İlhan Özer İlhan
- Department of Chemistry, Faculty of Sciences, Erciyes University, Talas Street, 38039 Kayseri, Turkey
| | - Veysel Kayser
- Faculty of Pharmacy, The University of Sydney, 2006 Sydney, Australia
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An efficient zinc-catalyzed cross-coupling reaction of aryl iodides with terminal aromatic alkynes. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dahm G, Bailly C, Karmazin L, Bellemin-Laponnaz S. Synthesis, structural characterization and in vitro anti-cancer activity of functionalized N-heterocyclic carbene platinum and palladium complexes. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.07.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Haque RA, Asekunowo PO, Budagumpi S, Shao L. Synthesis, Characterization, Crystal Structures, and Catalytic C-C Coupling and Hydrosilylation Reactions of Palladium(II) Complexes Derived from CNC Pincer-Type N-Heterocyclic Carbenes. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500393] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Levin E, Ivry E, Diesendruck CE, Lemcoff NG. Water in N-heterocyclic carbene-assisted catalysis. Chem Rev 2015; 115:4607-92. [PMID: 25942582 DOI: 10.1021/cr400640e] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Efrat Levin
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Elisa Ivry
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Charles E Diesendruck
- ‡Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - N Gabriel Lemcoff
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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Akkoç S, Gök Y. Dichlorido(3-chloropyridine-N)[1,3-dialkylbenzimidazol-2-ylidene]palladium(II) complexes: Synthesis, characterization and catalytic activity in the arylation reaction. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Shunmughanathan M, Puthiaraj P, Pitchumani K. Melamine-Based Microporous Network Polymer Supported Palladium Nanoparticles: A Stable and Efficient Catalyst for the Sonogashira Coupling Reaction in Water. ChemCatChem 2015. [DOI: 10.1002/cctc.201402844] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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32
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Liu QX, Cai KQ, Zhao ZX. Synthesis, structure and catalysis of a NHC–Pd(ii) complex based on a tetradentate mixed ligand. RSC Adv 2015. [DOI: 10.1039/c5ra11089k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
NHC–Pd(ii) complex 1 has been prepared. The catalytic activity of 1 in C–C coupling reactions was studied.
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Affiliation(s)
- Qing-Xiang Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Kang-Qing Cai
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Zhi-Xiang Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
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33
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Modak S, Gangwar MK, Nageswar Rao M, Madasu M, Kalita AC, Dorcet V, Shejale MA, Butcher RJ, Ghosh P. Fluoride-free Hiyama coupling by palladium abnormal N-heterocyclic carbene complexes. Dalton Trans 2015; 44:17617-28. [DOI: 10.1039/c5dt02317c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Pd complexes of the 1,2,3-triazole based abnormal NHC ligands of the type (a-NHC)PdI2(L) [L = NC5H5 and PPh3] successfully catalyzed the fluoride-free Hiyama coupling in air.
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Affiliation(s)
- Sudipta Modak
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| | - Manoj Kumar Gangwar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| | - Mitta Nageswar Rao
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| | - Mahesh Madasu
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| | - Alok Ch. Kalita
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| | - Vincent Dorcet
- Université de Rennes 1
- Institut des Sciences chimiques de Rennes
- Campus de Beaulieu
- 35042 Rennes
- France
| | - Mayuri Arun Shejale
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
| | - Ray J. Butcher
- Department of Chemistry Howard University
- Washington DC 20059
- USA
| | - Prasenjit Ghosh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai 400 076
- India
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34
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GANGWAR MANOJKUMAR, KALITA ALOKCH, GHOSH PRASENJIT. Palladium complexes of a new type of N-heterocyclic carbene ligand derived from a tricyclic triazolooxazine framework. J CHEM SCI 2014. [DOI: 10.1007/s12039-014-0705-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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35
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Akkoç S, Gök Y. Catalytic activities in direct arylation of novel palladiumN-heterocyclic carbene complexes. Appl Organomet Chem 2014. [DOI: 10.1002/aoc.3220] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Senem Akkoç
- Erciyes University; Faculty of Science, Department of Chemistry; 38039 Kayseri Turkey
| | - Yetkin Gök
- Inönü University; Faculty of Science and Arts, Department of Chemistry; 44280 Malatya Turkey
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36
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Gholinejad M, Shahsavari HR. N, N ′-bis(2-pyridinecarboxamide)-1,2-benzene palladium complex as a new efficient catalyst for Suzuki–Miyaura coupling reaction under phosphane free conditions. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.06.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Gallop CWD, Chen MT, Navarro O. Sonogashira Couplings Catalyzed by Collaborative (N-Heterocyclic Carbene)-Copper and -Palladium Complexes. Org Lett 2014; 16:3724-7. [DOI: 10.1021/ol501540w] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Ming-Tsz Chen
- Department
of Chemistry, University of Hawaii at Manoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Oscar Navarro
- Department
of Chemistry, University of Sussex, Brighton BN1 9QJ, United Kingdom
- Department
of Chemistry, University of Hawaii at Manoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
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38
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Deraedt C, Salmon L, Astruc D. “Click” Dendrimer-Stabilized Palladium Nanoparticles as a Green Catalyst Down to Parts per Million for Efficient CC Cross-Coupling Reactions and Reduction of 4-Nitrophenol. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400153] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Hydrazinoaminocarbene–palladium complexes as easily accessible and convenient catalysts for copper-free Sonogashira reactions. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.044] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Gholinejad M, Karimkhani V, Kim I. Active palladium catalyst supported by bulky diimine ligand catalyzed Suzuki-Miyauracoupling reaction in water under phosphane-free and low catalyst loading conditions. Appl Organomet Chem 2014. [DOI: 10.1002/aoc.3110] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Mohammad Gholinejad
- Department of Chemistry; Institute for Advanced Studies in Basic Sciences (IASBS); Zanjan 45137-66731 Iran
| | - Vahid Karimkhani
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; PO Box 15875-4413 Tehran Iran
- WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering; Pusan National University; Pusan 609-735 Korea
| | - Il Kim
- WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering; Pusan National University; Pusan 609-735 Korea
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