1
|
Mo BR, Wu JY, Yang JD, Cheng JP. Metal-Carbon Bond Heterolysis Energy Scale for Model Palladium Catalysts. Inorg Chem 2024. [PMID: 39327997 DOI: 10.1021/acs.inorgchem.4c03225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2024]
Abstract
Thermodynamic studies of transition-metal intermediates are crucial for understanding of metal-catalyzed transformations. Herein, a series of arylpalladium cyanomethanides were synthesized and characterized. Their palladium-carbon bond heterolysis energies (ΔGhet(Pd-C)) were determined in DMSO for the first time by equilibrium methods. ΔGhet(Pd-C) values of 7.9-19.1 kcal/mol, located between the ΔGhet(Pd-O) and ΔGhet(Pd-N) scales previously established, are much smaller than the corresponding ΔGhet(C-H)s of phenylacetonitrile (30.0 kcal/mol). Linear free energy relationship (LEFR) analysis reveals insights into the structure-property relationship and the factor dictating the thermodynamics of metalation. These ΔGhet(Pd-X)s in combination with ΔGhet(X-H)s are successfully used to diagnose the reaction feasibility and selectivity of X-H bond activation.
Collapse
Affiliation(s)
- Bin-Rui Mo
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jun-Yan Wu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jin-Dong Yang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
| |
Collapse
|
2
|
Sahharova LT, Burykina JV, Kostyukovich AY, Eremin DB, Boiko DA, Fakhrutdinov AN, Ananikov VP. Expanding the Role of Dimeric Species: On-Cycle Involvement, Improved Stability, and Control of Stereo-Specificity. A Case Study of Atom-Economic Catalytic Hydrothiolation. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Affiliation(s)
- Liliya T. Sahharova
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Julia V. Burykina
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Alexander Yu. Kostyukovich
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Dmitry B. Eremin
- The Bridge@USC, University of Southern California, 1002 Childs Way, Los Angeles, California 90089-3502, United States
| | - Daniil A. Boiko
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Artem N. Fakhrutdinov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Valentine P. Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| |
Collapse
|
3
|
Bissember AC, Gardiner MG, Wierenga TS. α-Cyanocarbanion complexes and their application in synthesis. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
4
|
Lu T, Yang CF, Zhang LY, Fei F, Chen XT, Xue ZL. Metal Complexes with a Hexadentate Macrocyclic Diamine-Tetracarbene Ligand. Inorg Chem 2017; 56:11917-11928. [DOI: 10.1021/acs.inorgchem.7b01896] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Taotao Lu
- State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures,
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Chu-Fan Yang
- State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures,
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Li-Yi Zhang
- State Key Laboratory
of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Fuzhou 350002, P. R. China
| | - Fan Fei
- State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures,
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xue-Tai Chen
- State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures,
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zi-Ling Xue
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
5
|
Kim Y, Park S. Parent-amido (NH2) palladium(II) complexes: Synthesis, reactions, and catalytic hydroamination. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.12.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Santana MD, López-Banet L, Sánchez G, Pérez J, Pérez E, García L, Serrano JL, Espinosa A. Non-covalent stacking interactions directing the structural and photophysical features of mono- and dinuclear cyclometalated palladium(ii) complexes. Dalton Trans 2016; 45:8601-13. [DOI: 10.1039/c5dt04913j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclometallated Pd(ii) complexes with different stackings show emission in solid state in relationship to them.
Collapse
Affiliation(s)
- M. D. Santana
- Departamento de Química Inorgánica and Regional Campus of International Excellence (Campus Mare Nostrum)
- Universidad de Murcia
- E-30071 Murcia
- Spain
| | - L. López-Banet
- Departamento de Química Inorgánica and Regional Campus of International Excellence (Campus Mare Nostrum)
- Universidad de Murcia
- E-30071 Murcia
- Spain
| | - G. Sánchez
- Departamento de Química Inorgánica and Regional Campus of International Excellence (Campus Mare Nostrum)
- Universidad de Murcia
- E-30071 Murcia
- Spain
| | - J. Pérez
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - E. Pérez
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - L. García
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - J. L. Serrano
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - A. Espinosa
- Departamento de Química Orgánica
- Universidad de Murcia
- E-30071 Murcia
- Spain
| |
Collapse
|
7
|
Wang L, Sun H, Li X. Imine Nitrogen Bridged Binuclear Nickel Complexes via N–H Bond Activation: Synthesis, Characterization, Unexpected C,N-Coupling Reaction, and Their Catalytic Application in Hydrosilylation of Aldehydes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00734] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Lin Wang
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Hongjian Sun
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Xiaoyan Li
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| |
Collapse
|
8
|
Dimeric and monomeric palladium(II) parent-amido (NH2) complexes: Synthesis, characterization, and reactivity. CR CHIM 2015. [DOI: 10.1016/j.crci.2015.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
9
|
Serrano JL, Pérez J, García L, Sánchez G, García J, Lozano P, Zende V, Kapdi A. N-Heterocyclic-Carbene Complexes Readily Prepared from Di-μ-hydroxopalladacycles Catalyze the Suzuki Arylation of 9-Bromophenanthrene. Organometallics 2015. [DOI: 10.1021/om501160n] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Luis Serrano
- Departamento
de Ingeniería Minera, Geológica y Cartográfica,
Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad Politécnica de Cartagena, Área de Química Inorgánica, 30203 Cartagena, Spain
| | - José Pérez
- Departamento
de Ingeniería Minera, Geológica y Cartográfica,
Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad Politécnica de Cartagena, Área de Química Inorgánica, 30203 Cartagena, Spain
| | - Luis García
- Departamento
de Ingeniería Minera, Geológica y Cartográfica,
Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad Politécnica de Cartagena, Área de Química Inorgánica, 30203 Cartagena, Spain
| | | | | | | | - Vidya Zende
- Department
of Chemistry, Institute of Chemical Technology, Mumbai, Nathalal Road, Matunga, Mumbai 400019, India
| | - Anant Kapdi
- Department
of Chemistry, Institute of Chemical Technology, Mumbai, Nathalal Road, Matunga, Mumbai 400019, India
| |
Collapse
|
10
|
Santana MD, García-Bueno R, García G, Sánchez G, García J, Kapdi AR, Naik M, Pednekar S, Pérez J, García L, Pérez E, Serrano JL. Novel saccharinate-bridged palladium complexes for efficient C–O bond activation displaying promising luminescence properties. Dalton Trans 2012; 41:3832-42. [DOI: 10.1039/c2dt12187e] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
11
|
|
12
|
Kauf T, Braunstein P. Reactivity of TCNE or TCNQ Derivatives of Quinonoid Zwitterions: Platinum-Induced HCN Elimination vs Oxidative-Addition. Inorg Chem 2011; 50:11472-80. [DOI: 10.1021/ic2013045] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Kauf
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4, rue Blaise Pascal, CS 90032, F-67081 Strasbourg Cedex, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4, rue Blaise Pascal, CS 90032, F-67081 Strasbourg Cedex, France
| |
Collapse
|
13
|
Penno D, Estevan F, Fernández E, Hirva P, Lahuerta P, Sanaú M, Úbeda MA. Dinuclear Ortho-Metalated Palladium(II) Compounds with N,N- and N,O-Donor Bridging Ligands. Synthesis of New Palladium(III) Complexes. Organometallics 2011. [DOI: 10.1021/om100740q] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dirk Penno
- Departament de Química Inorgànica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Francisco Estevan
- Departament de Química Inorgànica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Elena Fernández
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel.lí Domingo s/n, 43007 Tarragona, Spain
| | - Pipsa Hirva
- Department of Chemistry, University of Eastern Finland, Joensuu Campus, P.O.Box 111, FI-80101 Joensuu, Finland
| | - Pascual Lahuerta
- Departament de Química Inorgànica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Mercedes Sanaú
- Departament de Química Inorgànica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - M Angeles Úbeda
- Departament de Química Inorgànica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| |
Collapse
|
14
|
Vicente J, González-Herrero P, Frutos-Pedreño R, Chicote MT, Jones PG, Bautista D. Synthesis and Reactivity of Ortho-Palladated Phenylacetamides. Intramolecular C−N vs C−O Reductive Coupling after CO or XyNC Insertion into the Pd−C Bond. Synthesis of Isoquinoline- and Isocoumarin-Based Heterocycles. Organometallics 2011. [DOI: 10.1021/om101110s] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José Vicente
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Pablo González-Herrero
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Roberto Frutos-Pedreño
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - María-Teresa Chicote
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Postfach 3329, 38023 Braunschweig, Germany
| | - Delia Bautista
- SAI, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| |
Collapse
|
15
|
Santana MD, García-Bueno R, García G, Sánchez G, García J, Pérez J, García L, Serrano JL. Synthesis and luminescence properties of cyclopalladated complexes with S⁁N and O⁁N donor ligands. Dalton Trans 2011; 40:3537-46. [DOI: 10.1039/c0dt01337d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
16
|
Serrano JL, García L, Pérez J, Pérez E, Galiana JM, García J, Martínez M, Sánchez G, da Silva I. New cyclometallated precursors of unsubstituted N-phenylpyrazole [{Pd(phpz)(μ-X)}2] (X = AcO or OH) and study of their reactivity towards selected ligands. Dalton Trans 2011; 40:156-68. [DOI: 10.1039/c0dt00814a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- José Luis Serrano
- Departamento de Ingeniería Minera, Geológica y Cartográfica. Área de Química Inorgánica, 30203, Cartagena, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Johansson CCC, Colacot TJ. Metal-catalyzed alpha-arylation of carbonyl and related molecules: novel trends in C-C bond formation by C-H bond functionalization. Angew Chem Int Ed Engl 2010; 49:676-707. [PMID: 20058282 DOI: 10.1002/anie.200903424] [Citation(s) in RCA: 597] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Alpha-arylated carbonyl compounds are commonly occurring motifs in biologically interesting molecules and are therefore of high interest to the pharmaceutical industry. Conventional procedures for their synthesis often result in complications in scale-up, such as the use of stoichiometric amounts of toxic reagents and harsh reaction conditions. Over the last decade, significant efforts have been directed towards the development of metal-catalyzed alpha-arylations of carbonyl compounds as an alternative synthetic approach that operates under milder conditions. This Review summarizes the developments in this area to date, with a focus on how the substrate scope has been expanded through selection of the most appropriate synthetic method, such as the careful choice of ligands, precatalysts, bases, and reaction conditions.
Collapse
|
18
|
Johansson C, Colacot T. Metallkatalysierte α-Arylierungen von Carbonylen und verwandten Molekülen: aktuelle Trends bei der C-C-Kupplung über C-H-Funktionalisierung. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200903424] [Citation(s) in RCA: 226] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
19
|
|
20
|
Fleming FF, Gudipati S. Cyclic Metalated Nitriles: Stereoselective Cyclizations to cis- and trans-Hydrindanes, Decalins, and Bicyclo[4.3.0]undecanes. European J Org Chem 2008; 2008:10.1002/ejoc.200800715. [PMID: 24260015 PMCID: PMC3831376 DOI: 10.1002/ejoc.200800715] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Indexed: 11/07/2022]
Abstract
Metalated nitriles are nucleophilic chameleons whose precise identity is determined by the nature of the metal, the solvent, the temperature, and the structure of the nitrile. The review surveys the different structural types and their cyclization trajectories to show how to selectively tune the metalated nitrile geometry for stereoselective cyclizations to a variety of cis or trans hydrindanes, decalins, and bicyclo[4.3.0]undecanes.
Collapse
Affiliation(s)
- Fraser F. Fleming
- Department of Chemistry and Biochemistry, Mellon Hall, Duquesne University, Pittsburgh PA 15282-1530, USA
| | - Subramanyham Gudipati
- Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, N.J. 07033-0530, USA Fax: +1-908-740-7441
| |
Collapse
|
21
|
Serrano JL, García L, Pérez J, Pérez E, García J, Sánchez G, López G, Liu M. Reactivity Towards Acidic Protic Ligands of Cyclopalladated Di‐μ‐hydroxo Complexes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800445] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- José Luis Serrano
- Departamento de Ingeniería Minera, Geológica y Cartográfica.Universidad Politécnica de Cartagena Área de Química Inorgánica, 30203 Cartagena, Spain
| | - Luis García
- Departamento de Ingeniería Minera, Geológica y Cartográfica.Universidad Politécnica de Cartagena Área de Química Inorgánica, 30203 Cartagena, Spain
| | - José Pérez
- Departamento de Ingeniería Minera, Geológica y Cartográfica.Universidad Politécnica de Cartagena Área de Química Inorgánica, 30203 Cartagena, Spain
| | - Eduardo Pérez
- Departamento de Ingeniería Minera, Geológica y Cartográfica.Universidad Politécnica de Cartagena Área de Química Inorgánica, 30203 Cartagena, Spain
| | - Joaquín García
- Departamento de Química Inorgánica, Universidad de Murcia, 30071 Murcia, Spain
| | - Gregorio Sánchez
- Departamento de Química Inorgánica, Universidad de Murcia, 30071 Murcia, Spain
| | - Gregorio López
- Departamento de Química Inorgánica, Universidad de Murcia, 30071 Murcia, Spain
| | - Malva Liu
- Departamento de Termodinámica, Universidad de Valencia, 46100 Burjassot (Valencia), Spain
| |
Collapse
|
22
|
Fleming FF, Wei Y, Liu W, Zhang Z. Metalated Nitriles: Stereodivergent Cation-Controlled Cyclizations1. Tetrahedron 2008; 64:7477-7488. [PMID: 19657380 PMCID: PMC2597827 DOI: 10.1016/j.tet.2008.05.110] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Stereodivergent cyclizations of gamma-hydroxy cyclohexanecarbonitriles are controlled simply through judicious choice of cation in the alkylmetal base. Deprotonating a series of cyclic gamma-hydroxy nitriles with i-PrMgBr generates C-magnesiated nitriles that cyclize under stereoelectronic control to cis-fused hydrindanes, decalins, and bicyclo [5.4.0] undecanes. An analogous deprotonation with BuLi triggers cyclization to trans-fused hydrindanes, decalins, and bicyclo [5.4.0] undecanes consistent with a sterically controlled electrophilic attack on an equatorial nitrile anion. Using cations to control the geometry of metalated nitriles provides a versatile, stereodivergent cyclization to cis- and trans-hydrindanes, decalins, and [5. 4. 0] undecanes, and reveals the key geometric requirements for intramolecular S(N)2 and S(N)2' displacements.
Collapse
Affiliation(s)
- Fraser F. Fleming
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282-1530,
| | - Yunjing Wei
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282-1530,
| | - Wang Liu
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282-1530,
| | - Zhiyu Zhang
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282-1530,
| |
Collapse
|
23
|
Pérez J, Espinosa A, Galiana JM, Pérez E, Serrano JL, Cabeza A, Aranda MAG. Crystal Packing in Di-(μ-OH)-ortho-palladated Complexes - A DFT Insight into the Molecular Structure and Solid-State Interactions. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800383] [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]
|
24
|
Synthesis and characterization of new oxazoline-based palladacycles with bridging or terminal imidate ligands. Crystal structures of [{Pd(μ-dibromomaleimidate)(Phox)}2], [Pd(dibromomaleimidate)(Phox)(PPh3)] and [Pd(glutarimidate)(Phox)(PPh3)] (Phox=2-(2-oxazolinyl)phenyl)). Polyhedron 2008. [DOI: 10.1016/j.poly.2008.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Naota T, Tannna A, Kamuro S, Hieda M, Ogata K, Murahashi SI, Takaya H. SwitchableC- andN-Bound Isomers of Transition-Metal Cyanocarbanions: Synthesis and Interconversions of Cyclopentadienyl Ruthenium Complexes of Phenylsulfonylacetonitrile Anions. Chemistry 2008; 14:2482-98. [DOI: 10.1002/chem.200701315] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
26
|
Roesky HW, Singh S, Yusuff KKM, Maguire JA, Hosmane NS. Organometallic hydroxides of transition elements. Chem Rev 2007; 106:3813-43. [PMID: 16967922 DOI: 10.1021/cr050203b] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Herbert W Roesky
- Institut für Anorganische Chemie, Universität Göttingen, D-37077 Göttingen, Germany.
| | | | | | | | | |
Collapse
|
27
|
Pawlikowski AV, Getty AD, Goldberg KI. Alkyl Carbon−Nitrogen Reductive Elimination from Platinum(IV)−Sulfonamide Complexes. J Am Chem Soc 2007; 129:10382-93. [PMID: 17672451 DOI: 10.1021/ja069191h] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Platinum(IV) complexes containing monodentate sulfonamide ligands, fac-(dppbz)PtMe(3)(NHSO(2)R) (dppbz = o-bis(diphenylphosphino)benzene; R = p-C(6)H(4)(CH2)(3)CH(3) (1a), p-C(6)H(4)CH(3) (1b), CH(3) (1c)), have been synthesized and characterized, and their thermal reactivity has been explored. Compounds 1a-c undergo competitive C-N and C-C reductive elimination upon thermolysis to form N-methylsulfonamides and ethane, respectively. Selectivity for either C-N or C-C bond formation can be achieved by altering the reaction conditions. Good yields of the C-N-coupled products were observed when the thermolyses of 1a-c were conducted in benzene-d(6). In contrast, exclusive C-C reductive elimination occurred upon themolysis of 1a,b in nitrobenzene-d(5). When the thermolyses of 1a were performed in the presence of sulfonamide anion NHSO2R- in benzene-d(6), ethane elimination was completely inhibited and C-N reductive elimination products were formed in high yield. Mechanistic studies support a two-step reaction pathway involving initial dissociation of NHSO(2)R(-) from the platinum center, followed by nucleophilic attack of this anion on a methyl group of the resulting five-coordinate platinum(IV) cation to form MeNHSO(2)R and (dppbz)PtMe(2). C-C reductive elimination to form ethane occurs directly from the five-coordinate Pt(IV) cation.
Collapse
Affiliation(s)
- Andrew V Pawlikowski
- Department of Chemistry, University of Washington, PO Box 351700, Seattle, Washington 98195-1700, USA
| | | | | |
Collapse
|
28
|
Fleming FF, Vu VA, Shook BC, Rahman M, Steward OW. Metalated Nitriles: Chelation-Controlled Cyclizations to cis and trans Hydrindanes and Decalins. J Org Chem 2007; 72:1431-6. [PMID: 17249734 DOI: 10.1021/jo062270r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chelation provides a powerful means of stereocontrol in alkylations of metalated nitriles. Doubly deprotonating a series of cyclic beta-hydroxynitriles triggers cyclizations that implicate metalated nitrile intermediates having configurations imposed by chelation with an adjacent, chiral lithium alkoxide. Identifying chelation as a general stereocontrol element explains several previously anomalous alkylations of metalated nitriles and provides a potential solution to the long-standing difficulty of synthesizing trans-hydrindanes. Employing chelation to control the metalated nitrile geometry permits selective cyclizations to cis and trans hydrindanes and decalins and provides key insight into the geometrical requirements of these demanding cyclizations.
Collapse
Affiliation(s)
- Fraser F Fleming
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282-1530, USA.
| | | | | | | | | |
Collapse
|
29
|
Brand H, Liebman JF, Schulz A, Mayer P, Villinger A. Nonlinear, Resonance-Stabilized Pseudohalides: From Alkali Methanides to Ionic Liquids of Methanides. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600668] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
30
|
Wu F, Jordan RF. Acrylonitrile Insertion Reactions of Palladium Alkyl Complexes that Contain Neutral or Anionic Bidentate Phosphine Ligands. Organometallics 2006. [DOI: 10.1021/om060640w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Richard F. Jordan
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| |
Collapse
|
31
|
Koshevoy IO, Lahuerta P, Sanaú M, Ubeda MA, Doménech A. Dinuclear palladium(ii) compounds with bridging cyclometalated phosphines. Synthesis, crystal structure and electrochemical study. Dalton Trans 2006:5536-41. [PMID: 17117224 DOI: 10.1039/b609829k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structural characterization of bis-cyclometalated palladium(II) compounds of formula Pd2[(micro-(C6X4)PPh2]2(micro-O2CR)2 [X = H, R = CH3 (3), CF3 (4), C(CH3)3 (5) and C6F5 (6); X = F, R = CH3 (7) and CF3 (8)], has confirmed its paddle wheel structure with two palladium atoms bridged by two acetates and two metalated phosphines in a head-to-tail arrangement. The Pd...Pd distances are in the range 2.6779(16)-2.7229(8) A. Under cyclic voltammetric conditions, compounds 3-6, in CH2Cl2 solution, were found to undergo a reversible oxidation peak in the range of potential values 0.84-1.25 V. A second partially-reversible oxidation is observed at more positive potentials (1.37-1.55 V). For compounds 3-5 in the presence of chlorides, the first oxidation becomes a two-electron process presumably leading to a neutral [Pd(III)-Pd(III)] species with a metal-metal bond.
Collapse
Affiliation(s)
- Igor O Koshevoy
- Departamento de Química Inorgánica, Universitat de Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | | | | | | | | |
Collapse
|
32
|
|
33
|
Cámpora J, Palma P, del Río D, López JA, Álvarez E, Connelly NG. Redox Behavior of an Organometallic Palladium(II)/Palladium(IV) System. A New Method for the Synthesis of Cationic Palladium(IV) Complexes. Organometallics 2005. [DOI: 10.1021/om050216f] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan Cámpora
- Instituto de Investigaciones Químicas, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Pilar Palma
- Instituto de Investigaciones Químicas, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Diego del Río
- Instituto de Investigaciones Químicas, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Jorge A. López
- Instituto de Investigaciones Químicas, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Neil G. Connelly
- School of Chemistry, University of Bristol, Bristol, BS8 1TS, U.K
| |
Collapse
|
34
|
Sánchez G, Vives J, López G, Serrano JL, García L, Pérez J. Exploring the Reactivity towards Acidic Protic Ligands of the Di‐μ‐hydroxo Complex [NBu
4
]
2
[Pd
2
{C
4
(COOMe)
4
}
2
(μ‐OH)
2
]: A Convenient Precursor in the Preparation of New Palladacyclopentadiene Complexes. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200401047] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gregorio Sánchez
- Departamento de Química Inorgánica, Universidad de Murcia, 30071 Murcia, Spain
| | - Jorge Vives
- Departamento de Química Inorgánica, Universidad de Murcia, 30071 Murcia, Spain
| | - Gregorio López
- Departamento de Química Inorgánica, Universidad de Murcia, 30071 Murcia, Spain
| | - José Luis Serrano
- Departamento de Ingeniería Minera, Geológica y Cartográfica, Área de Química Inorgánica, Universidad Politécnica de Cartagena, 30203 Cartagena, Spain
| | - Luis García
- Departamento de Ingeniería Minera, Geológica y Cartográfica, Área de Química Inorgánica, Universidad Politécnica de Cartagena, 30203 Cartagena, Spain
| | - José Pérez
- Departamento de Ingeniería Minera, Geológica y Cartográfica, Área de Química Inorgánica, Universidad Politécnica de Cartagena, 30203 Cartagena, Spain
| |
Collapse
|
35
|
Groux LF, Weiss T, Reddy DN, Chase PA, Piers WE, Ziegler T, Parvez M, Benet-Buchholz J. Insertion of Acrylonitrile into Palladium Methyl Bonds in Neutral and Anionic Pd(II) Complexes. J Am Chem Soc 2005; 127:1854-69. [PMID: 15701021 DOI: 10.1021/ja044119+] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactions of a series of Pd(II) methyl compounds of general formula LPd(NCCH(3))CH(3), where L is a bulky phenoxydiazene or phenoxyaldimine ligand with the polar olefin acrylonitrile (AN), are reported. The compounds react with an excess of AN to give the products of 2,1 insertion into the Pd-Me bond, yielding dimers and/or trimers which feature bridging alpha-cyano groups. The reactions were studied by low temperature (1)H NMR spectroscopy, revealing an initial formation of compounds featuring N-bound AN, which isomerized to an (unobserved) pi-bound species that rapidly underwent 2,1 insertion into the Pd-Me bond. Intermediate oligomeric complexes retaining a Pd-Me function were observed at low [AN] in these reactions. Under pseudo first-order conditions, k(obs) values of 8.5 x 10(-5) to 2.68 x 10(-3) M(-1) (-22 degrees C to 10 degrees C, 100 equiv of AN) and activation parameters of DeltaH++ = 14.4(5) kcal mol(-1) and DeltaS++ = -19(5) eu were obtained in one case. Comparison of the overall rates of insertion between two LPd(NCCH(3))CH(3), differing in the overall charge on the supporting ligand L, showed that the complex bearing a negatively charged ligand reacts with AN twice as fast as one with no anionic charge. The rates of insertion in both of these complexes are significantly faster than reported rates for analogous reactions in cationic Pd(II) derivatives, indicating that increasing the negative charge on the complex enhances the rate of AN insertion. These results provide fundamental mechanistic insights into a crucial reaction for incorporation of polar comonomers into alpha olefins via a coordination polymerization mechanism.
Collapse
Affiliation(s)
- Laurent F Groux
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Wu F, Foley SR, Burns CT, Jordan RF. Acrylonitrile Insertion Reactions of Cationic Palladium Alkyl Complexes. J Am Chem Soc 2005; 127:1841-53. [PMID: 15701020 DOI: 10.1021/ja044122t] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of acrylonitrile (AN) with "L(2)PdMe+" species were investigated; (L(2) = CH(2)(N-Me-imidazol-2-yl)(2) (a, bim), (p-tolyl)(3)CCH(N-Me-imidazol-2-yl)(2) (b, Tbim), CH(2)(5-Me-2-pyridyl)(2) (c, CH(2)py'(2)), 4,4'-Me(2)-2,2'-bipyridine (d), 4,4'-(t)Bu(2)-2,2'-bipyridine (e), (2,6-(i)Pr(2)-C(6)H(3))N=CMeCMe=N(2,6-(i)Pr(2)-C(6)H(3)) (f)). [L(2)PdMe(NMe(2)Ph)][B(C(6)F(5))(4)] (2a-c) and [{L(2)PdMe}(2)(mu-Cl)][B(C(6)F(5))(4)] (2d-f) react with AN to form N-bound adducts L(2)Pd(Me)(NCCH=CH(2))(+) (3a-f). 3a-e undergo 2,1 insertion to yield L(2)Pd{CH(CN)Et}+, which form aggregates [L(2)Pd{CH(CN)Et}](n)(n)(+) (n = 1-3, 4a-e) in which the Pd units are proposed to be linked by PdCHEtCN- - -Pd bridges. 3f does not insert AN at 23 degrees C. 4a-e were characterized by NMR, ESI-MS, IR and derivatization to L(2)Pd{CH(CN)Et}(PR(3))+ (R = Ph (5a-e), Me (6a-c)). 4a,b react with CO to form L(2)Pd{CH(CN)Et}(CO)+ (7a,b). 7a reacts with CO by slow reversible insertion to yield (bim)Pd{C(=O)CH(CN)Et}(CO)+ (8a). 4a-e do not react with ethylene. (Tbim)PdMe+ coordinates AN more weakly than ethylene, and AN insertion of 3b is slower than ethylene insertion of (Tbim)Pd(Me)(CH(2)=CH(2))(+) (10b). These results show that most important obstacles to insertion polymerization or copolymerization of AN using L(2)PdR+ catalysts are the tendency of L(2)Pd{CH(CN)CH(2)R}+ species to aggregate, which competes with monomer coordination, and the low insertion reactivity of L(2)Pd{CH(CN)CH(2)R}(substrate)+ species.
Collapse
Affiliation(s)
- Fan Wu
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL 60637, USA
| | | | | | | |
Collapse
|
37
|
Clapham SE, Morris RH. Reactions of an Amido Hydrido Complex of Osmium, OsH(NHCMe2CMe2NH2)(PPh3)2: HX Addition, HX Transfer, and Ketone H2 Hydrogenation. Organometallics 2005. [DOI: 10.1021/om048998k] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sean E. Clapham
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Robert H. Morris
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
38
|
Osakada K, Onodera H, Nishihara Y. Diarylpalladium Complexes with a Cis Structure. Formation via Transmetalation of Arylboronic Acids with an Aryliodopalladium Complex and Intramolecular Coupling of the Aryl Ligands, Affording Unsymmetrical Biaryls. Organometallics 2004. [DOI: 10.1021/om049217i] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kohtaro Osakada
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Hiroyuki Onodera
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Yasushi Nishihara
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| |
Collapse
|
39
|
Serrano J, Fairlamb I, Sánchez G, García L, Pérez J, Vives J, López G, Crawforth C, Taylor R. Palladacyclopentadiene Complexes with Mono- and Didentate Imidato Ligands: Synthesis, Hemilabile Behaviour and Catalytic Application in the Stille Reaction. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300962] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
40
|
Culkin DA, Hartwig JF. Carbon−Carbon Bond-Forming Reductive Elimination from Arylpalladium Complexes Containing Functionalized Alkyl Groups. Influence of Ligand Steric and Electronic Properties on Structure, Stability, and Reactivity. Organometallics 2004. [DOI: 10.1021/om049726k] [Citation(s) in RCA: 246] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Darcy A. Culkin
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| | - John F. Hartwig
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| |
Collapse
|
41
|
Ruiz J, Rodrı́guez V, de Haro C, Pérez J, López G. New thiocarbamate and thioureate palladium and platinum complexes: synthesis and use as metalloligands. Unprecedented coordination of the thioureate ligand in [(C6F5)2Pd{μ2,η2-SC(NMe2)NPh}Pd(C6F5)(bpzm)]. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2004.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
42
|
Ruiz J, Rodrı́guez V, Pérez A, López G, Bautista D. Synthesis and characterization of new sulfide aggregates of the type [{Pt2(μ3-S)2(P–P)2}M(C6F5)2] (M=Ni, Pd, Pt; P–P=2PPh3, 2PMe2Ph, dppf). J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.03.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
43
|
Arroyo M, Bernès S, Cerón J, Rius J, Torrens H. Insertion Reactions of [M(SR)3(PMe2Ph)2] with CS2 (M = Ru, Os; R = C6F4H-4, C6F5). X-ray Structures of [Ru(S2CSC6F4H-4)2(PMe2Ph)2], trans-Thiolates [M(SR)2(S2CSR)(PMe2Ph)2] (M = Ru; R = C6F5 and M = Os; R = C6F4H-4), and trans-Thiolate−Phosphine [Os(SC6F5)2(S2CSC6F5)(PMe2Ph)2]. Inorg Chem 2004; 43:986-92. [PMID: 14753820 DOI: 10.1021/ic034125r] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reactions of [M(SR)(3)(PMe(2)Ph)(2)] (M = Ru, Os; R = C(6)F(4)H-4, C(6)F(5)) with CS(2) in acetone afford [Ru(S(2)CSR)(2)(PMe(2)Ph)(2)] (R = C(6)F(4)H-4, 1; C(6)F(5), 3) and trans-thiolates [Ru(SR)(2)(S(2)CSR)(PMe(2)Ph)(2)] (R = C(6)F(4)H-4, 2; C(6)F(5), 4) or the isomers trans-thiolates [Os(SR)(2)(S(2)CSR)(PMe(2)Ph)(2)] (R = C(6)F(4)H-4, 5; C(6)F(5), 7) and trans-thiolate-phosphine [Os(SR)(2)(S(2)CSR)(PMe(2)Ph)(2)] (R = C(6)F(4)H-4, 6; C(6)F(5), 8) through processes involving CS(2) insertion into M-SR bonds. The ruthenium(III) complexes [Ru(SR)(3)(PMe(2)Ph)(2)] react with CS(2) to give the diamagnetic thiolate-thioxanthato ruthenium(II) and the paramagnetic ruthenium(III) complexes while osmium(III) complexes [Os(SR)(3)(PMe(2)Ph)(2)] react to give the paramagnetic thiolate-thioxanthato osmium(III) isomers. The single-crystal X-ray diffraction studies of 1, 4, 5, and 8 show distorted octahedral structures. (31)P [(1)H] and (19)F NMR studies show that the solution structures of 1 and 3 are consistent with the solid-state structure of 1.
Collapse
Affiliation(s)
- Maribel Arroyo
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Apdo. Postal J-42, San Manuel, C. P. 72571, Puebla, Pue., Mexico.
| | | | | | | | | |
Collapse
|
44
|
Ruiz J, Martínez MT, Rodríguez V, López G, Pérez J, Chaloner PA, Hitchcock PB. Condensation reactions of monomeric hydroxo palladium complexes with active methyl and methylene compounds. Dalton Trans 2004:3521-7. [PMID: 15510272 DOI: 10.1039/b409942g] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heating a suspension of the monomeric hydroxo palladium complex of the type [Pd(N-N)(C(6)F(5))(OH)](N-N = bipy, Me(2)bipy, phen or tmeda) in methylketone (acetone or methylisobutylketone) under reflux affords the corresponding ketonyl palladium complex [Pd(N-N)(C(6)F(5))(CH(2)COR)]. On the other hand, the reaction of the hydroxo palladium complexes [Pd(N-N)(C(6)F(5))(OH)](N-N = bipy, phen or tmeda) with diethylmalonate or malononitrile yields the C-bound enolate palladium complexes [Pd(N-N)(CHX(2))(C(6)F(5))](X = CO(2)Et or CN), and the reaction of [Pd(N-N)(C(6)F(5))(OH)](N-N = bipy or phen) with nitromethane gives the nitromethyl palladium complexes [Pd(N-N)(CH(2)NO(2))(C(6)F(5))]. [Pd(tmeda)(C(6)F(5))(OH)] catalyses the cyclotrimerization of malononitrile. The crystal structures of [Pd(bipy)(C(6)F(5))(CH(2)COMe)].1/2Me(2)CO, [Pd(tmeda)(C(6)F(5))[CH(CO(2)Et)(2)]], [Pd(tmeda)(C(6)F(5))[CH(CN)(2)]] and [Pd(tmeda)(C(6)F(5))(CH(2)NO(2))].1/2CH(2)Cl(2) have been established by X-ray diffraction.
Collapse
Affiliation(s)
- José Ruiz
- Departamento de Química Inorgánica, Universidad de Murcia, E-30071, Murcia, Spain. ;
| | | | | | | | | | | | | |
Collapse
|
45
|
Fairlamb IJS, Kapdi AR, Lee AF, Sánchez G, López G, Serrano JL, García L, Pérez J, Pérez E. Mono- and binuclear cyclometallated palladium(ii) complexes containing bridging (N,O-) and terminal (N-) imidate ligands: Air stable, thermally robust and recyclable catalysts for cross-coupling processes. Dalton Trans 2004:3970-81. [PMID: 15558122 DOI: 10.1039/b413886d] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel dinuclear cyclometallated palladium complexes [{Pd(mu-NCO)(C circumflex accent N)}(2)], containing asymmetric imidato -NCO- bridging units have been synthesised [C circumflex accent N = 7,8-benzoquinolyl; -NCO- = succinimidate (1c), phthalimidate (1a-3a) or maleimidate (3c)]. The reaction of these complexes, and the previously reported analogous imidate precursors containing a phenylazophenyl (1a-3a) or 2-pyridylphenyl (1b-3b) backbone, with tertiary phosphines provides novel mononuclear N-bonded imidate derivatives of the general formula [Pd(C circumflex accent N)(imidate)(L)][L = PPh(3), P(4-F-C(6)H(4))(3) or P(4-MeO-C(6)H(4))(3)]. The single crystal structures of [Pd(azb)(phthalimidate)(P(4-MeO-C(6)H(4))(3))](9a) and [Pd(bzq)(phthalimidate)(PPh(3))](7c) have been established. Dinuclear complexes (1a-3a, 1b-3b, 1c-3c) demonstrate outstanding thermal stability in the solid-state, as shown by thermoanalytical techniques. A marked influence of bridging imidate groups on the initial decomposition temperature is observed. The dinuclear and mononuclear derivatives are shown to be active catalysts/precatalysts for the Suzuki-Miyaura cross-coupling reactions of aryl bromides with aryl boronic acids, and the Sonogashira reactions of aryl halides with phenyl acetylene (in the presence and absence of Cu(I) salts). The conversions appear to be dependent, to some extent, on the type of imidate ligand, suggesting a role for these pseudohalides in the catalytic cycle in both cross-coupling processes. Lower catalyst loadings in 'copper-free' Sonogashira cross-couplings favour higher turnover frequencies. We have further determined that these catalysts may be recycled using a poly(ethylene oxide)(PEO)/methanol solvent medium in Suzuki-Miyaura cross-coupling. Once the reaction is complete, product extraction into a hexane/diethyl ether mixture (1 : 1, v/v) gives cross-coupled products in good yields (with purity > 95%). The polar phase can then be re-used several times without appreciable loss of catalytic activity.
Collapse
Affiliation(s)
- Ian J S Fairlamb
- Department of Chemistry, University of York, Heslington, York, UK YO10 5DD.
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
|
47
|
Ruiz J, Martínez MT, Florenciano F, Rodríguez V, López G, Pérez J, Chaloner PA, Hitchcock PB. Insertion reactions into Pd[bond]O and Pd[bond]N bonds: preparation of alkoxycarbonyl, carbonato, carbamato, thiocarbamate, and thioureide complexes of palladium(II). Inorg Chem 2003; 42:3650-61. [PMID: 12767205 DOI: 10.1021/ic0300058] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mononuclear palladium hydroxo complexes of the type [Pd(N[bond]N)(C(6)F(5))(OH)] [(N[bond]N = 2,2'-bipyridine (bipy), 4,4'-dimethyl-2,2'-bipyridine (Me(2)bipy), 1,10-phenanthroline (phen), or N,N,N',N'-tetramethylethylenediamine (tmeda)] have been prepared by reaction of [Pd(N[bond]N)(C(6)F(5))(acetone)]ClO(4) with KOH in methanol. These hydroxo complexes react, in methanol, with CO (1 atm, room temperature) to yield the corresponding methoxycarbonyl complexes [Pd(N[bond]N)(C(6)F(5))(CO(2)Me)]. Similar alkoxycarbonyl complexes [Pd(N[bond]N)(C(6)F(5))(CO(2)R)] (N[bond]N = bis(3,5-dimethylpyrazol-1-yl)methane); R = Me, Et, or (i)Pr) are obtained when [Pd(N[bond]N)(C(6)F(5))Cl] is treated with KOH in the corresponding alcohol ROH and CO is bubbled through the solution. The reactions of [Pd(N[bond]N)(C(6)F(5))(OH)] (N[bond]N = bipy or Me(2)bipy) with CO(2), in tetrahydrofuran, lead to the formation of the binuclear carbonate complexes [(N[bond]N)(C(6)F(5))Pd(mu-eta(2)-CO(3))Pd(C(6)F(5))(N[bond]N)]. Complexes [Pd(N[bond]N)(C(6)F(5))(OH)] react in alcohol with PhNCS to yield the corresponding N-phenyl-O-alkylthiocarbamate complexes [Pd(N[bond]N)(C(6)F(5))[SC(OR)NPh]]. Similarly, the reaction of [Pd(bipy)(C(6)F(5))(OH)] with PhNCO in methanol gives the N-phenyl-O-methylcarbamate complex [Pd(bipy)(C(6)F(5))[NPhC(O)OR]]. The reactions of [(N[bond]N)Pd(C(6)F(5))(OH)] with PhNCS in the presence of Et(2)NH yield the corresponding thioureidometal complexes [Pd(N[bond]N)(C(6)F(5))[NPhCSNR(2)]]. The crystal structures of [Pd(tmeda)(C(6)F(5))(CO(2)Me)], [Pd(2)(Me(2)bipy)(2)(C(6)F(5))(2)(mu-eta(2)-CO(3))].2CH(2)Cl(2), and [Pd(tmeda)(C(6)F(5))[SC(OMe)NPh]] have been determined.
Collapse
Affiliation(s)
- José Ruiz
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, 30071 Murcia, Spain.
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Culkin DA, Hartwig JF. Palladium-catalyzed alpha-arylation of carbonyl compounds and nitriles. Acc Chem Res 2003; 36:234-45. [PMID: 12693921 DOI: 10.1021/ar0201106] [Citation(s) in RCA: 791] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The palladium-catalyzed alpha-arylation of ketones has become a useful and general synthetic method. In this process, an enolate is generated from a ketone and base in the presence of an aryl halide, and a palladium catalyst couples this enolate with the aryl halide. With the advent of new catalysts composed of sterically hindered, electron-rich alkylphosphine and N-heterocyclic carbene ligands, this process now encompasses a broad range of enolates and related anions, including those derived from amides, esters, aldehydes, nitriles, malonates, cyanoesters, nitroalkanes, sulfones, and lactones. In the proposed mechanism for this reaction, the carbon-carbon bond of the product is formed by reductive elimination from an arylpalladium enolate intermediate. The structures and reactions of arylpalladium complexes of enolate, cyanoalkyl, and malonate ions have been studied to determine how the binding mode and electronic and steric parameters influence the rate and mechanism of reductive elimination.
Collapse
Affiliation(s)
- Darcy A Culkin
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
| | | |
Collapse
|
49
|
|
50
|
Culkin DA, Hartwig JF. Synthesis, characterization, and reactivity of arylpalladium cyanoalkyl complexes: selection of catalysts for the alpha-arylation of nitriles. J Am Chem Soc 2002; 124:9330-1. [PMID: 12167001 DOI: 10.1021/ja026584h] [Citation(s) in RCA: 141] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new coupling process, the palladium-catalyzed alpha-arylation of nitriles, was developed by exploring the structure and reactivity of arylpalladium cyanoalkyl complexes. Complexes of 1,2-bis(diphenylphosphino)benzene (DPPBz), 1,1'-bis(di-i-propylphosphino)ferrocene (D(i)()PrPF), racemic-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (BINAP), and diphenylethylphosphine (PPh(2)Et) were prepared. Coordination to palladium through the alpha-carbon was observed for DPPBz-ligated complexes and for complexes of primary and benzylic nitrile anions. However, the anion of isobutyronitrile was coordinated to palladium through the cyano-nitrogen when the complex was ligated by D(i)()PrPF. The isobutyronitrile anion displaced a phosphine ligand to form a C,N-bridged dimer when generated from PPh(2)Et-ligated palladium. These results suggest that the nitrile anion preferentially coordinates to palladium through the carbon atom in the absence of steric effects. Thermolysis of the arylpalladium cyanoalkyl complexes led to reductive elimination that formed alpha-aryl nitriles. The high yields and short reaction times observed for BINAP-ligated complexes suggested that BINAP-ligated palladium catalysts might be appropriate for the arylation of nitriles. Initial results on a palladium-catalyzed process for the direct coupling of aryl bromides and primary, benzylic, and secondary nitrile anions to form alpha-aryl nitriles in good yields are reported.
Collapse
Affiliation(s)
- Darcy A Culkin
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
| | | |
Collapse
|