1
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Hattori T, Yamamoto H. Trimethylaluminum-mediated one-pot peptide elongation. Chem Sci 2023; 14:5795-5801. [PMID: 37265739 PMCID: PMC10231425 DOI: 10.1039/d3sc00208j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 04/26/2023] [Indexed: 06/03/2023] Open
Abstract
Efficient and straightforward peptide bond formation of N-, and C-terminal unprotected amino acids was successfully achieved by using trimethylaluminum. The coupling reaction was accomplished by pre-reaction of N-, and C-terminal unprotected amino acids and trimethylaluminum to form a five-membered ring that smoothly reacted with nucleophilic amino acid esters. This simple and highly efficient reaction system allows one-pot tripeptide synthesis without the need for expensive coupling reagents. Furthermore, peptide bond formation can be effectively achieved even for amino acids with bulky substituents at the side chain to afford the corresponding tripeptides in high yields in a one-pot manner. In addition, the reaction can be applied for further peptide elongation by the subsequent addition of amino acids and trimethylaluminum. We anticipate that this cost-effective, straightforward, and efficient protocol will be useful for the synthesis of a wide variety of peptides.
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Affiliation(s)
- Tomohiro Hattori
- Peptide Research Center, Chubu University 1200 Matsumoto-cho Kasugai Aichi 487-8501 Japan
| | - Hisashi Yamamoto
- Peptide Research Center, Chubu University 1200 Matsumoto-cho Kasugai Aichi 487-8501 Japan
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2
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Tanase T, Nakamae K, Ura Y, Nakajima T. Aiming for dynamic behaviours of molecular metal chains. Dalton Trans 2023; 52:1147-1158. [PMID: 36453666 DOI: 10.1039/d2dt03442e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The dynamical functions of molecular metal chains, that could be derived from unique physical and chemical properties coupled with self-assembly of metal chain components, have largely been unexplored, and this review paper focuses on the dynamic behaviours of Pd chains supported by linear tetraphosphines, meso- and rac-Ph2PCH2P(Ph)CH2P(Ph)CH2PPh2 recently reported, and the current development on fine-tuning of metal chains by introducing heterometal atoms, i.e. heterometallic molecular metal chains, that are considered as promising dynamical components in the next generation.
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Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Kanako Nakamae
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Yasuyuki Ura
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Takayuki Nakajima
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
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3
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Jackman KMK, Liang G, Boyle PD, Zimmerman PM, Blacquiere JM. Changes in ligand coordination mode induce bimetallic C-C coupling pathways. Dalton Trans 2022; 51:3977-3991. [PMID: 35174382 PMCID: PMC8937615 DOI: 10.1039/d2dt00322h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon-carbon coupling is one of the most powerful tools in the organic synthesis arsenal. Known methodologies primarily exploit monometallic Pd0/PdII catalytic mechanisms to give new C-C bonds. Bimetallic C-C coupling mechanisms that involve a PdI/PdII redox cycle, remain underexplored. Thus, a detailed mechnaistic understanding is imperative for the development of new bimetallic catalysts. Previously, a PdII-Me dimer (1) supported by L1, which has phosphine and 1-azaallyl donor groups, underwent reductive elimination to give ethane, a PdI dimer, a PdII monometallic complex, and Pd black. Herein, a comprehensive experimental and computational study of the reactivity of 1 is presented, which reveals that the versatile coordination chemistry of L1 promotes bimetallic C-C bond formation. The phosphine 1-azaallyl ligand adopts various bridging modes to maintain the bimetallic structure throughout the C-C bond forming mechanism, which involves intramolecular methyl transfer and 1,1-reductive elimination from one of the palladium atoms. The minor byproduct, methane, likely forms through a monometallic intermediate that is sensitive to solvent C-H activation. Overall, the capacity of L1 to adopt different coordination modes promotes the bimetallic C-C coupling channel through pathways that are unattainable with statically-coordinated ligands.
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Affiliation(s)
- Kyle M K Jackman
- Department of Chemistry, University of Western Ontario, London, Canada, N6A 5B7.
| | - Guangchao Liang
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
| | - Paul D Boyle
- Department of Chemistry, University of Western Ontario, London, Canada, N6A 5B7.
| | - Paul M Zimmerman
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
| | - Johanna M Blacquiere
- Department of Chemistry, University of Western Ontario, London, Canada, N6A 5B7.
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4
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Bigi F, Cera G, Maggi R, Wang Y, Malacria M, Maestri G. Is Aromaticity a Driving Force in Catalytic Cycles? A Case from the Cycloisomerization of Enynes Catalyzed by All-Metal Aromatic Pd 3+ Clusters and Carboxylic Acids. J Phys Chem A 2021; 125:10035-10043. [PMID: 34784222 DOI: 10.1021/acs.jpca.1c07253] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The work details a mechanistic study based on density functional theory modeling on the cycloisomerization of polyunsaturated substrates catalyzed by all-metal aromatic tripalladium complexes and carboxylic acids. These clusters are an emerging class of catalysts for a variety of relevant transformations, including C-C forming processes that occur under mild conditions and display synthetic features complementary to those of established mononuclear complexes. This study is the first computational one devoted to the comprehension of the series of elementary steps involved in a synthetic transformation catalyzed by an all-metal aromatic complex. Present results confirm previous experimental hints on the striking mechanistic differences exerted by these clusters with respect to the usual cyclization pathways of related substrates. Moreover, the catalytic cycle involving present all-metal aromatic clusters closely parallels the mechanism of the aromatic substitution of regular arenes.
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Affiliation(s)
- Franca Bigi
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.,IMEM-CNR, Parco Area delle Scienze 37/A, 43124 Parma, Italy
| | - Gianpiero Cera
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Raimondo Maggi
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Yanlan Wang
- Department of Chemistry and Chemical Engineering, Liaocheng University, 252059 Liaocheng, China
| | - Max Malacria
- Sorbonne Université, Faculty of Science and Engineering, CNRS, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), 75252 Paris Cedex 05, France
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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5
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Tanase T, Nakamae K, Miyano H, Fujisawa Y, Ura Y, Nakajima T. Electrochemical hydrogen formation catalysed by a Pd 8 string. Chem Commun (Camb) 2021; 57:11264-11267. [PMID: 34635898 DOI: 10.1039/d1cc04788d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The linear Pd8 complex supported by tetraphosphines reacted with HBF4 to give an unprecedented linear tetrapalladium complex with a terminal hydride, which promoted electrocatalytic hydrogen formation from HBF4 in acetonitrile. The 1D coordination polymer of Pd8 chain confined within Nafion film was applied to the electrocatalytic H2 formation.
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Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Kanako Nakamae
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Haruka Miyano
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Yoshimi Fujisawa
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Yasuyuki Ura
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
| | - Takayuki Nakajima
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
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6
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Zhou X, Zhang G, Huang R, Huang H. Palladium-Catalyzed Allyl-Allyl Reductive Coupling of Allylamines or Allylic Alcohols with H 2 as Sole Reductant. Org Lett 2021; 23:365-369. [PMID: 33400881 DOI: 10.1021/acs.orglett.0c03865] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic carbon-carbon bond formation building on reductive coupling is a powerful method for the preparation of organic compounds. The identification of environmentally benign reductants is key for establishing an efficient reductive coupling reaction. Herein an efficient strategy enabling H2 as the sole reductant for the palladium-catalyzed allyl-allyl reductive coupling reaction is described. A wide range of allylamines and allylic alcohols as well as allylic ethers proceed smoothly to deliver the C-C coupling products under 1 atm of H2. Kinetic studies suggested that the dinuclear palladium species was involved in the catalytic cycle.
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Affiliation(s)
- Xibing Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Guoying Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Renbin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hanmin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China.,Center for Excellence in Molecular Synthesis of CAS, Hefei 230026, P. R. China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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7
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Martínez-Ferraté O, López-Valbuena JM, Belmonte MM, White AJP, Benet-Buchholz J, Britovsek GJP, Claver C, van Leeuwen PWNM. Novel iminopyridine derivatives: ligands for preparation of Fe(ii) and Cu(ii) dinuclear complexes. Dalton Trans 2016; 45:3564-76. [PMID: 26804332 DOI: 10.1039/c5dt04358a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of imino- and amino-pyridine ligands based on dihydrobenzofurobenzofuran (BFBF) and methanodibenzodioxocine (DBDOC) backbones have been synthesized. These ligands form exclusively dinuclear complexes with metals such as iron(II) and copper(II). The structures for complexes 15, 16, 18, 19, 20, 21, 23, and 24 were determined by X-ray crystallography. The complexes show large distances for the metal nuclei and different geometries depending on the nature of the metal. An octahedral geometry was observed for the iron(II) complexes, while copper(II) complex 24 showed a distorted trigonal bipyramidal geometry. The iron(II) complexes showed activity as catalysts in the cycloaddition of CO2 to epoxides, obtaining moderate yields of cyclic carbonates.
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Affiliation(s)
- Oriol Martínez-Ferraté
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain. and Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain.
| | - Josep M López-Valbuena
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain.
| | - Marta Martínez Belmonte
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain.
| | - Andrew J P White
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, UK.
| | - Jordi Benet-Buchholz
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain.
| | - George J P Britovsek
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, UK.
| | - Carmen Claver
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain. and Centre Tecnòlogic de la Química, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain.
| | - Piet W N M van Leeuwen
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain.
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8
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Qi X, Bai R, Zhu L, Jin R, Lei A, Lan Y. Mechanism of Synergistic Cu(II)/Cu(I)-Mediated Alkyne Coupling: Dinuclear 1,2-Reductive Elimination after Minimum Energy Crossing Point. J Org Chem 2016; 81:1654-60. [DOI: 10.1021/acs.joc.5b02797] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaotian Qi
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Ruopeng Bai
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, People’s Republic of China
| | - Lei Zhu
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Rui Jin
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Aiwen Lei
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, People’s Republic of China
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
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9
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Molitor S, Schwarz C, Gessner VH. Mono- and Bis-Cyclometalated Palladium Complexes: Synthesis, Characterization, and Catalytic Activity. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sebastian Molitor
- Institut für Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Christopher Schwarz
- Institut für Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Viktoria H. Gessner
- Institut für Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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10
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Bhargava SK, Privér SH, Willis AC, Bennett MA. Preparation, Structure, and Reactivity of Dipalladium(I) Complexes Containing the Carbanion 2-C6F4PPh2: Coexistence of Distinct, Noninterconverting Head-to-Head [Dipalladium(0/II)] and Head-to-Tail [Dipalladium(I)] Species. Organometallics 2012. [DOI: 10.1021/om300525p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suresh K. Bhargava
- School of Applied Sciences (Applied
Chemistry), RMIT University, GPO Box 2476
V, Melbourne, Victoria 3001, Australia
| | - Steven H. Privér
- School of Applied Sciences (Applied
Chemistry), RMIT University, GPO Box 2476
V, Melbourne, Victoria 3001, Australia
| | - Anthony C. Willis
- Research School of Chemistry, Australian National University, Canberra, ACT 0200,
Australia
| | - Martin A. Bennett
- Research School of Chemistry, Australian National University, Canberra, ACT 0200,
Australia
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11
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Pamplin CB, Rettig SJ, Patrick BO, James BR. Reactions of the Bis(dialkylphosphino)methane Complexes Pd2X2(μ-R2PCH2PR2)2 (X = halogen, R = Me or Et) with H2S, S8, COS, and CS2; Detection of Reaction Intermediates. Inorg Chem 2011; 50:8094-105. [DOI: 10.1021/ic200503d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Craig B. Pamplin
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Steven J. Rettig
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Brian O. Patrick
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Brian R. James
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
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12
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Das RK, Saha B, Rahaman SMW, Bera JK. Bimetallic catalysis involving dipalladium(I) and diruthenium(I) complexes. Chemistry 2011; 16:14459-68. [PMID: 20981670 DOI: 10.1002/chem.201001960] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Dipalladium(I) and diruthenium(I) compounds bridged by two [{(5,7-dimethyl-1,8-naphthyridin-2-yl)amino}carbonyl]ferrocene (L) ligands have been synthesized. The X-ray structures of [Pd(2)L(2)][BF(4)](2) (1) and [Ru(2)L(2)(CO)(4)][BF(4)](2) (2) reveal dinuclear structures with short metal-metal distances. In both of these structures, naphthyridine bridges the dimetal unit, and the site trans to the metal-metal bond is occupied by weakly coordinating oxygen from the amido fragment. The catalytic utilities of these bimetallic compounds are evaluated. Compound 1 is an excellent catalyst for phosphine-free, Suzuki cross-coupling reactions of aryl bromides with arylboronic acids and provides high yields in short reaction times. Compound 1 is also found to be catalytically active for aryl chlorides, although the corresponding yields are lower. A bimetallic mechanism is proposed, which involves the oxidative addition of aryl bromide across the Pd-Pd bond and the bimetallic reductive elimination of the product. Compound 1 is also an efficient catalyst for the Heck cross-coupling of aryl bromides with styrenes. The mechanism for aldehyde olefination with ethyl diazoacetate (EDA) and PPh(3), catalyzed by 2, has been fully elucidated. It is demonstrated that 2 catalyzes the formation of phosphorane utilizing EDA and PPh(3), which subsequently reacts with aldehyde to produce a new olefin and phosphine oxide. The efficacy of bimetallic complexes in catalytic organic transformations is illustrated in this work.
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Affiliation(s)
- Raj K Das
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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13
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Chang YH, Liu ZY, Liu YH, Peng SM, Chen JT, Liu ST. Palladium(ii) complexes based on 1,8-naphthyridine functionalized N-heterocyclic carbenes (NHC) and their catalytic activity. Dalton Trans 2011; 40:489-94. [PMID: 21113540 DOI: 10.1039/c0dt00990c] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Yung-Hung Chang
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan
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14
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Boyd P, Edwards A, Gardiner M, Ho C, Lemée-Cailleau MH, McGuinness D, Riapanitra A, Steed J, Stringer D, Yates B. Reduction of a Chelating Bis(NHC) Palladium(II) Complex to [{μ-bis(NHC)}2Pd2H]+: A Terminal Hydride in a Binuclear Palladium(I) Species Formed under Catalytically Relevant Conditions. Angew Chem Int Ed Engl 2010; 49:6315-8. [DOI: 10.1002/anie.201003177] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Boyd P, Edwards A, Gardiner M, Ho C, Lemée-Cailleau MH, McGuinness D, Riapanitra A, Steed J, Stringer D, Yates B. Reduction of a Chelating Bis(NHC) Palladium(II) Complex to [{μ-bis(NHC)}2Pd2H]+: A Terminal Hydride in a Binuclear Palladium(I) Species Formed under Catalytically Relevant Conditions. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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López-Valbuena JM, Escudero-Adan EC, Benet-Buchholz J, Freixa Z, van Leeuwen PWNM. An approach to bimetallic catalysts by ligand design. Dalton Trans 2010; 39:8560-74. [PMID: 20697645 DOI: 10.1039/c0dt00011f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New diphosphines based on benzofurobenzofuran and dibenzodioxocin backbones, forming exclusively bimetallic complexes were designed and synthesized. Depending on the ligand to metal ratio, face-to-face bimetallic complexes or syn-chloride bridged dimeric complexes were formed as main reaction products. The structures of the rhodium complexes of the new ligands 4, 7, 10, 13, 16 were established in solution by NMR, IR, and MS spectroscopy. The molecular structures of the syn-chloride bridged dimeric complexes [Rh(2)(CO)(2)(mu-Cl)(2)(4)] (22), [Rh(2)(CO)(2)(mu-Cl)(2)(10)] (24), and the face-to-face bimetallic complexes [Rh(CO)Cl(4)](2) (17), [Rh(CO)Cl(10)](2) (19), and [Rh(CO)Cl(13)](2) (20) were confirmed by X-ray crystallography. Ligands 4, 7, 10, 13, 16, and SPANphos were tested in rhodium catalyzed methanol carbonylation at 150 degrees C and 22 bar of CO gas, showing high activities under catalytic conditions.
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Affiliation(s)
- Josep M López-Valbuena
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain
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17
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Sachse A, John M, Meyer F. A unique Pd4 platform with CH3 and mu-CH2 groups and its C-C coupling reaction with simple olefins. Angew Chem Int Ed Engl 2010; 49:1986-9. [PMID: 20155765 DOI: 10.1002/anie.200904745] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna Sachse
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
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18
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Sachse A, John M, Meyer F. A Unique Pd4 Platform with CH3 and μ-CH2 Groups and Its CC Coupling Reaction with Simple Olefins. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200904745] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Lumbreras E, Sisler EM, Shelby QD. Synthesis, X-ray crystal structure, and reactivity of Pd2(μ-dotpm)2 (dotpm=bis(di-ortho-tolylphosphino)methane). J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.10.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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Ogura T, Yoshida K, Yanagisawa A, Imamoto T. Optically Active Dinuclear Palladium Complexes Containing a Pd−Pd Bond: Preparation and Enantioinduction Ability in Asymmetric Ring-Opening Reactions. Org Lett 2009; 11:2245-8. [DOI: 10.1021/ol900533h] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomokazu Ogura
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kazuhiro Yoshida
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Akira Yanagisawa
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Tsuneo Imamoto
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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21
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22
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Synthesis and structure of new palladium complexes with the ligand 2-(diphenylphosphino)-1-methylimidazole: Evidence of hemilability. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.11.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Electrochemical reduction properties of A-frame compounds and crystal structure of Pd2(dppm)2(Me)2(Br)+ dimer. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.09.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Mendía A, Cerrada E, Arnáiz FJ, Laguna M. Pyridine-2-thionate as a versatile ligand in Pd(ii) and Pt(ii) chemistry: the presence of three different co-ordination modes in [Pd2(μ2-S,N-C5H4SN)(μ2-κ2S-C5H4SN)(μ2-dppm)(S-C5H4SN)2]. Dalton Trans 2006:609-16. [PMID: 16402148 DOI: 10.1039/b508438e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of [MCl2(L-L)], M = Pt, Pd; L-L = bis(diphenylphosphino)methane (dppm) or bis(diphenylphosphino)ethane (dppe), with NaC5H4SN in a 1 : 2 molar ratio lead to mononuclear species [M(S-C5H4SN)2(P-P)], M = Pt; L-L = dppm (1) or dppe (2) and M = Pd; L-L = dppe (3), as well as to the dinuclear [Pd2(micro2-S,N-C5H4SN)(micro2-kappa2S-C5H4SN)(micro2-dppm)(S-C5H4SN)2] (4). In contrast, reaction of [MCl2(dppm)] with NaC5H4SN in a 1 : 1 molar ratio leads to [Pd2(micro2-S,N-C5H4SN)3(micro2-dppm)]Cl (5) and trans-[Pt(S-C5H4SN)2(PPh2Me)2] (6) respectively. The latter is formed in low yield by cleavage of the dppm ligand. The dinuclear derivatives 4 and 5 present an A-frame and lantern structure, respectively. The former showing three different co-ordination modes in the same molecule with a short Pd-Pd distance of 2.9583 (9) A and the latter with three bridging S,N thionate ligands showing a shorter Pd-Pd distance of 2.7291 (13) A. Both distances could be imposed by the bridging ligands or point to some sort of metal-metal interaction.
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Affiliation(s)
- Aránzazu Mendía
- Departamento de Química, Area de Química Inorgánica, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
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Braun T, Steffen A, Schorlemer V, Neumann B, Stammler HG. Routes to unique palladium A-frame complexes with a bridging fluoro-ligand. Dalton Trans 2005:3331-6. [PMID: 16193151 DOI: 10.1039/b509032f] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of a toluene solution of [PdMe(2)(Cy(2)PCH(2)PCy(2))](1) with pentafluoropyridine in the presence of traces of water affords the generation of the A-frame complexes [(PdMe)(2){mu-kappa(2)(P,P)Cy(2)PCH(2)PCy(2)}(2)(mu-F)][SiMeF(4)]() and [(PdMe)(2){mu-kappa(2)(P,P)Cy(2)PCH(2)PCy(2)}(2)(mu-F)][OC(5)NF(4)](2b). If the reaction is performed in an NMR tube equipped with a PFA inliner, complex 2b is produced, only. Treatment of 1 with pentafluoropyridine in the presence of an excess water yields the pyridyloxy complex [PdMe(OC(5)NF(4))(Cy(2)PCH(2)PCy(2))](3). Compound [(PdMe)(2){mu-kappa(2)(P,P)Cy(2)PCH(2)PCy(2)}(2)(mu-F)][FHF](2c) bearing a bifluoride anion instead of SiMeF(4)(-) or OC(5)NF(4)(-) can be generated by reaction of 1 with substoichiometric amounts of Et(3)N.3HF. The analogous complex [(PdMe)(2){mu-kappa(2)(P,P)Ph(2)PCH(2)PPh(2)}(2)(mu-F)][FHF] (5c) has been synthesized by addition of Ph(2)PCH(2)PPh(2) to a solution of [PdMe(2)(Me(2)NCH(2)CH(2)NMe(2))](4) in THF and subsequent treatment of the reaction mixture with Et(3)N.3HF. The structure of the A-frame complex 5c has been determined by X-ray crystallography.
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Affiliation(s)
- Thomas Braun
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany.
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27
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Kirss RU, Forsyth DA, Plante MA. Synthesis and spectroscopy of binuclear phosphine bridged palladium hydrides: Pd2HX3[dppm]2 (X=Br, I; dppm=bis[diphenylphosphino]methane). J Organomet Chem 2003. [DOI: 10.1016/j.jorganchem.2003.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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van der Vlugt J, Grutters M, Mills A, Kooijman H, Spek A, Vogt D. New Diphosphane Ligands Based on Bisphenol A Backbones− Synthesis and Coordination Chemistry. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300419] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Burrows AD, Mahon MF, Nolan SP, Varrone M. Diphosphines Possessing Electronically Different Donor Groups: Synthesis and Coordination Chemistry of the Unsymmetrical Di(N-pyrrolyl)phosphino-Functionalized dppm Analogue Ph2PCH2P(NC4H4)2. Inorg Chem 2003; 42:7227-38. [PMID: 14577792 DOI: 10.1021/ic034487z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The unsymmetrical diphosphinomethane ligand Ph(2)PCH(2)P(NC(4)H(4))(2) L has been prepared from the reaction of Ph(2)PCH(2)Li with PCl(NC(4)H(4))(2). The diphenylphosphino group can be selectively oxidized with sulfur to give Ph(2)P(S)CH(2)P(NC(4)H(4))(2) 1. The reaction of L with [MCl(2)(cod)] (M = Pd, Pt) gives the chelate complexes [MCl(2)(L-kappa(2)P,P')] (2, M = Pd; 3, M = Pt) in which the M-P bond to the di(N-pyrrolyl)phosphino group is shorter than that to the corresponding diphenylphosphino group. However, the shorter Pd-P bond is cleaved on reaction of 2 with an additional 1 equiv of L to give [PdCl(2)(L-kappa(1)P)(2)] 4. Complex 4 reacts with [PdCl(2)(cod)] to regenerate 2, and with [Pd(2)(dba)(3)].CHCl(3) to give the palladium(I) dimer [Pd(2)Cl(2)(mu-L)(2)] 5, which exists in solution and the solid state as a 1:1 mixture of head-to-head (HH) and head-to-tail (HT) isomers. The palladium(II) dimer [Pd(2)Cl(2)(CH(3))(2)(mu-L)(2)] 6, formed by the reaction of [PdCl(CH(3))(cod)] with L, also exists in solution as a mixture of HH and HT isomers, although in this case the HT isomer prevails at low temperature and crystallizes preferentially. Complex 6 reacts with TlPF(6) to give the A-frame complex [Pd(2)(CH(3))(2)(mu-Cl)(mu-L)(2)]PF(6) 7. The reaction of L with [RuCp*(mu(3)-Cl)](4) leads to the dimer [Ru(2)Cp*(2)(mu-Cl)(2)(mu-L)] 8, for which the enthalpy of reaction has been measured. The reaction of L with [Rh(mu-Cl)(cod)](2) gives a mixture of compounds from which the dimer [Rh(2)(mu-Cl)(cod)(2)(mu-L)]PF(6) 9 can be isolated. The crystal structures of 2.CHCl(3), 3.CH(2)Cl(2), 4, 5.(1)/(4)CH(2)Cl(2), 6, 7.2CH(2)Cl(2), 8, and 9.CH(2)Cl(2) are reported.
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Affiliation(s)
- Andrew D Burrows
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
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Evrard D, Drouin M, Mugnier Y, Harvey PD. Reactivity and electrochemical properties of the d8–d8 Pd2(dppm)2(Cl)2(Me)2 towards MeI. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01554-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Yamamoto Y, Ohno T, Itoh K. Dinuclear Palladium(0) and Platinum(0) Complexes with p-Benzoquinone and Norbornene Ligands. Organometallics 2003. [DOI: 10.1021/om030029m] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoshihiko Yamamoto
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
| | - Takuya Ohno
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
| | - Kenji Itoh
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
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Richmond MK, Scott SL, Yap GPA, Alper H. Preparation of Dinuclear Phosphine-Bridged Palladium(II) Species and Their Silica-Bound Analogues as Catalysts for the Cyclization of Aminoalkynes. Organometallics 2002. [DOI: 10.1021/om020026u] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew K. Richmond
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
| | - Susannah L. Scott
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
| | - Glenn P. A. Yap
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
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34
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Tsukada N, Tamura O, Inoue Y. Synthesis and Structures of Palladium and Platinum A-Frame Complexes Bridged by a Novel Binucleating Ligand, N,N‘-Bis[(2-diphenylphosphino)phenyl]- formamidine. Organometallics 2002. [DOI: 10.1021/om020003f] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naofumi Tsukada
- Department of Materials Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Osamu Tamura
- Department of Materials Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Yoshio Inoue
- Department of Materials Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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35
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Zuideveld MA, Swennenhuis BHG, Boele MDK, Guari Y, van Strijdonck GPF, Reek JNH, Kamer PCJ, Goubitz K, Fraanje J, Lutz M, Spek AL, van Leeuwen PWNM. The coordination behaviour of large natural bite angle diphosphine ligands towards methyl and 4-cyanophenylpalladium(ii) complexes. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b111596k] [Citation(s) in RCA: 125] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Stockland, RA, Janka M, Hoel GR, Rath NP, Anderson GK. General Route to Halide-Bridged Organopalladium A-Frame Complexes and Studies of Reductive Elimination from These Bimetallic Systems. Organometallics 2001. [DOI: 10.1021/om010626d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robert A. Stockland,
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Mesfin Janka
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Gretchen R. Hoel
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Nigam P. Rath
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Gordon K. Anderson
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
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37
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Reid SM, Mague JT, Fink MJ. Facile reductive elimination of ethane from strained dimethylpalladium(II) complexes. J Am Chem Soc 2001; 123:4081-2. [PMID: 11457160 DOI: 10.1021/ja0056062] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S M Reid
- Department of Chemistry, Tulane University New Orleans, Louisiana 70118, USA
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38
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Janka M, Anderson GK, Rath NP. Synthesis and Structures of Platinum A-Frame Complexes. Organometallics 2000. [DOI: 10.1021/om000337+] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Meilleur D, Rivard D, Harvey PD, Gauthron I, Lucas D, Mugnier Y. Chemical properties of the Pd4(dppm)4(H)2(2+) cluster and the homogeneous electrocatalytical behavior of hydrogen evolution and formate decomposition. Inorg Chem 2000; 39:2909-14. [PMID: 11232832 DOI: 10.1021/ic9913987] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new reductive electrochemical (CO2 + H2O + 2e-; HCO2H + 2e-) and two new chemical methods (Al(CH3)3 + proton donor; NaO2CH) to prepare the title compound from Pd2(dppm)2Cl2 are reported. For the latter method, an intermediate species formulated as Pd2(dppm)4(O2CH)2(2+) is identified spectroscopically (1H NMR, 31P NMR, IR, and FAB-MS). Limited stability of the title compound in the presence of Cl- and Br- as counteranions is noticed and is due to sensitivity of the cluster toward nucleophilic attack of the halide ions. This result is corroborated by the rapid decomposition of these clusters in the presence of CN- to form the binuclear species Pd2(dppm)2(CN)4 and by the preparation of the stable salts [Pd4(dppm)4(H)2](X)2(X- = BF4-, PF6-, BPh4-). Upon a two-electron electrochemical reduction of this cluster to the neutral species (E1/2 = -1.42 V vs SCE in DMF) in the presence of 1 equiv of HCO2H, a highly reactive species formulated as [Pd4(dppm)4(H)3]+ is generated and characterized by 1H NMR, 31P NMR, and cyclic voltammetry. Subsequent addition of H+ (via RCO2H; R = H, CH3, CF3, C6H5) under the same reducing conditions, induces the homogeneous catalysis of H2 evolution. The turnover number is found to be 134 in 2 h, with no evidence for catalyst decomposition. This same species also exhibits a one-electron oxidation process (E1/2 = -0.61 V vs SCE in DMF) that induces the catalytical decomposition of formate (HCO2- --> CO2 + 1/2H2 + 1e-). This double catalysis from the same cluster intermediate is unprecedented.
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Affiliation(s)
- D Meilleur
- Département de Chimie, Université de Sherbrooke, Québec, Canada
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40
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Stockland RA, Anderson GK, Rath NP. Synthesis and structures of hydride-bridged palladium A-frame complexes. Inorganica Chim Acta 2000. [DOI: 10.1016/s0020-1693(99)00606-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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41
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Murahashi T, Otani T, Okuno T, Kurosawa H. Coupling of Alkynes on a Pd−Pd Bond to Generate an Electrophilic μ-Butenediylidene Moiety. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/(sici)1521-3757(20000204)112:3<547::aid-ange547>3.0.co;2-b] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Stockland RA, Anderson GK, Rath NP. Reductive Elimination of Alkanes and Arenes from [Pd2R2(μ-H)(μ-dppm)2]PF6 Complexes. J Am Chem Soc 1999. [DOI: 10.1021/ja990815b] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert A. Stockland
- Department of Chemistry University of Missouri-St. Louis 8001 Natural Bridge Road St. Louis, Missouri 63121
| | - Gordon K. Anderson
- Department of Chemistry University of Missouri-St. Louis 8001 Natural Bridge Road St. Louis, Missouri 63121
| | - Nigam P. Rath
- Department of Chemistry University of Missouri-St. Louis 8001 Natural Bridge Road St. Louis, Missouri 63121
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43
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Substitution reactions of trans-[PdXPh(SbPh3)2J (X=Cl or Br) with nitrogen, phosphines and arsenic donor ligands. Crystal structures of trans-[PdClPh(PPh3)2], [PdClPh(bipy)], [PdClPh(dppm)]2, and [PdBrPh(dppm)]2. Polyhedron 1999. [DOI: 10.1016/s0277-5387(98)00404-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Mashima K, Fukumoto A, Nakano H, Kaneda Y, Tani K, Nakamura A. Dative Pd(0)−Mo(II) Bonds in a Linearly Aligned Tetrametal System: Preparation, Characterization, and Reaction of a Tetranuclear Pd(0)−Mo(II)−Mo(II)−Pd(0) Supported by Four 6-Diphenylphosphino-2-pyridonate Ligands. J Am Chem Soc 1998. [DOI: 10.1021/ja9817702] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazushi Mashima
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka, Osaka 560-8531, Japan, and Department of Macromolecular Science Graduate School of Science Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Atsushi Fukumoto
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka, Osaka 560-8531, Japan, and Department of Macromolecular Science Graduate School of Science Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Hiroshi Nakano
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka, Osaka 560-8531, Japan, and Department of Macromolecular Science Graduate School of Science Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Yutaka Kaneda
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka, Osaka 560-8531, Japan, and Department of Macromolecular Science Graduate School of Science Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Kazuhide Tani
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka, Osaka 560-8531, Japan, and Department of Macromolecular Science Graduate School of Science Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Akira Nakamura
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka, Osaka 560-8531, Japan, and Department of Macromolecular Science Graduate School of Science Osaka University, Toyonaka, Osaka 560-0043, Japan
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45
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Maekawa M, Munakata M, Kuroda-Sowa T, Suenaga Y. Synthesis and crystal structure of dinuclear palladium(I) dppm complex with 4-mercaptopyridine in the thione mode. [Pd2(μ-dppm)2(HpyS)2](ClO4)2·CH3OH. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(98)00155-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Heise JD, Raftery D, Breedlove BK, Washington J, Kubiak CP. Variable-Temperature Kinetic Analysis of a Three-Site Terminal Ligand Exchange in Nickel A-Frames by Quantitative 31P{1H} EXSY NMR. Organometallics 1998. [DOI: 10.1021/om980556j] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jerald D. Heise
- Department of Chemistry, Purdue University, 1393 Brown Laboratory of Chemistry, West Lafayette, Indiana 47907-1393
| | - Daniel Raftery
- Department of Chemistry, Purdue University, 1393 Brown Laboratory of Chemistry, West Lafayette, Indiana 47907-1393
| | - Brian K. Breedlove
- Department of Chemistry, Purdue University, 1393 Brown Laboratory of Chemistry, West Lafayette, Indiana 47907-1393
| | - John Washington
- Department of Chemistry, Purdue University, 1393 Brown Laboratory of Chemistry, West Lafayette, Indiana 47907-1393
| | - Clifford P. Kubiak
- Department of Chemistry, Purdue University, 1393 Brown Laboratory of Chemistry, West Lafayette, Indiana 47907-1393
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47
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Maekawa M, Munakata M, Kuroda-Sowa T, Suenaga Y. Synthesis and crystal structure of dinuclear and tetranuclear palladium dppm complexes. [Pd2(μ-dppm)2(vpy)Cl] and [Pd4(μ-dppm)4 (μ-X)2](ClO4)2 (X = Cl, Br and I). Polyhedron 1998. [DOI: 10.1016/s0277-5387(98)00163-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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48
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Stockland RA, Anderson GK, Rath NP. Reactions of [PdX2(dppm)] Complexes with Grignard Reagents. Organometallics 1997. [DOI: 10.1021/om970376u] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert A. Stockland
- Department of Chemistry, University of MissouriSt. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Gordon K. Anderson
- Department of Chemistry, University of MissouriSt. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Nigam P. Rath
- Department of Chemistry, University of MissouriSt. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
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49
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Bennett JL, Wolczanski PT. Selectivities in Hydrocarbon Activation: Kinetic and Thermodynamic Investigations of Reversible 1,2-RH-Elimination from (silox)2(tBu3SiNH)TiR (silox = tBu3SiO). J Am Chem Soc 1997. [DOI: 10.1021/ja9707419] [Citation(s) in RCA: 206] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jordan L. Bennett
- Contribution from Baker Laboratory, Department of Chemistry, Cornell University, Ithaca, New York 14853
| | - Peter T. Wolczanski
- Contribution from Baker Laboratory, Department of Chemistry, Cornell University, Ithaca, New York 14853
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50
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Stockland RA, Anderson GK, Rath NP. Hydride-bridged dipalladium complexes containing diphosphine ligands. Inorganica Chim Acta 1997. [DOI: 10.1016/s0020-1693(97)05446-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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