1
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Chen W, Shaikh I, Ahmed F, Karkoub S, AlRawashdeh M, Zhou H, Madrahimov S. Phosphine-incorporated Metal-Organic Framework for Palladium Catalyzed Heck Coupling Reaction. ChemistryOpen 2024; 13:e202300249. [PMID: 38593358 PMCID: PMC11319216 DOI: 10.1002/open.202300249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/12/2024] [Indexed: 04/11/2024] Open
Abstract
As an emerging material with the potential to combine the high efficiency of homogeneous catalysts and high stability and recyclability of heterogeneous catalysts, metal-organic frameworks (MOFs) have been viewed as one of the candidates to produce catalysts of the next generation. Herein, we heterogenized the highly active mono(phosphine)-Pd complex on surface of UiO-66 MOF, as a catalyst for Suzuki and Heck cross coupling reactions. The successful immobilization of these Pd-monophosphine complexes on MOF surface to form UiO-66-PPh2-Pd was characterized and confirmed via comprehensive set of analytical methods. UiO-66-PPh2-Pd showed high activity and selectivity for both Suzuki and Heck Cross Coupling Reactions. This strategy enabled facile access to mono(phosphine) complexes which are challenging to design and require multistep synthesis in homogeneous systems, paving the way for future MOF catalysts applications by similar systems.
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Affiliation(s)
- Wenmiao Chen
- Department of ScienceTexas A&M University at QatarEducation City, P.O. Box23874DohaQatar
- Department of ChemistryTexas A&M UniversityCollege StationTexas77843–3255United States
| | - Insha Shaikh
- Department of Chemical EngineeringTexas A&M University at QatarEducation City, P.O. Box23874DohaQatar
| | - Fatma Ahmed
- Department of Chemical EngineeringTexas A&M University at QatarEducation City, P.O. Box23874DohaQatar
| | - Sahar Karkoub
- Department of Chemical EngineeringTexas A&M University at QatarEducation City, P.O. Box23874DohaQatar
| | - Mamoun AlRawashdeh
- Department of Chemical EngineeringTexas A&M University at QatarEducation City, P.O. Box23874DohaQatar
| | - Hongcai Zhou
- Department of ChemistryTexas A&M UniversityCollege StationTexas77843–3255United States
| | - Sherzod Madrahimov
- Department of ScienceTexas A&M University at QatarEducation City, P.O. Box23874DohaQatar
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2
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Choi K, Brunn JN, Borate K, Kaduskar R, Lizandara Pueyo C, Shinde H, Goetz R, Hartwig JF. Palladium-Catalyzed Amination of Aryl Halides with Aqueous Ammonia and Hydroxide Base Enabled by Ligand Development. J Am Chem Soc 2024; 146:19414-19424. [PMID: 38968576 DOI: 10.1021/jacs.4c05768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2024]
Abstract
The conversion of aryl halides to primary arylamines with a convenient and inexpensive source of ammonia has been a long-standing synthetic challenge. Aqueous ammonia would be the most convenient and least expensive form of ammonia, but such a palladium-catalyzed amination reaction with a high concentration of water faces challenges concerning catalyst stability and competing hydroxylation, and palladium-catalyzed reactions with this practical reagent are rare. Further, most reactions with ammonia to form primary amines are conducted with tert-butoxide base, but reactions with ammonium hydroxide would contain hydroxide as base. Thus, ammonia surrogates, ammonia in organic solvents, and ammonium salts have been used under anhydrous conditions instead with varying levels of selectivity for the primary amine. We report the palladium-catalyzed amination of aryl and heteroaryl chlorides and bromides with aqueous ammonia and a hydroxide base to form the primary arylamine with high selectivity. The palladium catalyst containing a new dialkyl biheteroaryl phosphine ligand (KPhos) suppresses both the formation of aryl alcohol and diarylamine side products. Mechanistic studies with a soluble hydroxide base revealed turnover-limiting reductive elimination of the arylamine and an equilibrium between arylpalladium amido and hydroxo complexes prior to the turnover-limiting step.
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Affiliation(s)
- Kyoungmin Choi
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - John N Brunn
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Kailaskumar Borate
- BASF Chemicals India Pvt. Ltd., Thane Belapur Road, Turbhe, Navi Mumbai 400705, India
| | - Rahul Kaduskar
- BASF Chemicals India Pvt. Ltd., Thane Belapur Road, Turbhe, Navi Mumbai 400705, India
| | | | - Harish Shinde
- BASF Chemicals India Pvt. Ltd., Thane Belapur Road, Turbhe, Navi Mumbai 400705, India
| | - Roland Goetz
- BASF SE, Carl-Bosch-Strasse 38, Ludwigshafen 67056, Germany
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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3
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Xue J, Zhang YS, Huan Z, Luo HT, Dong L, Yang JD, Cheng JP. Phosphonium-Catalyzed Monoreduction of Bisphosphine Dioxides: Origin of Selectivity and Synthetic Applications. J Am Chem Soc 2024; 146:9335-9346. [PMID: 38501695 DOI: 10.1021/jacs.4c01361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Controlling product selectivity in successive reactions of the same type is challenging owing to the comparable thermodynamic and kinetic properties of the reactions involved. Here, the synergistic interaction of the two phosphoryl groups in bisphosphine dioxides (BPDOs) with a bromo-phosphonium cation was studied experimentally to provide a practical tool for substrate-catalyst recognition. As the eventual result, we have developed a phosphonium-catalyzed monoreduction of chiral BPDOs to access an array of synthetically useful bisphosphine monoxides (BPMOs) with axial, spiro, and planar chirality, which are otherwise challenging to synthesize before. The reaction features excellent selectivity and impressive reactivity. It proceeds under mild conditions, avoiding the use of superstoichiometric amounts of additives and metal catalysts to simplify the synthetic procedure. The accessibility and scalability of the reaction allowed for the rapid construction of a ligand library for optimization of asymmetric Heck-type cyclization, laying the foundation for a broad range of applications of chiral BPMOs in catalysis.
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Affiliation(s)
- Jing Xue
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yu-Shan Zhang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zhen Huan
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Hai-Tian Luo
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Likun Dong
- 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
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, 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, Nankai University, Tianjin 300071, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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4
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Taylor NS, Gordinier MT, Suhagia T, Pinto DD, Cherry DD, Verry DS, Baker LN, DeYonker NJ, Young KJ, Brewster TP. Donor Ability of Bisphosphinemonoxide Ligands Relevant to Late-Metal Olefin Polymerization Catalysis. Inorg Chem 2024; 63:2888-2898. [PMID: 38295440 DOI: 10.1021/acs.inorgchem.3c02869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Late-transition-metal catalysts for polymerization of olefins have drawn a significant amount of attention owing to their ability to tolerate and incorporate polar comonomers. However, a systematic way to experimentally quantify the electronic properties of the ligands used in these systems has not been developed. Quantified ligand parameters will allow for the rational design of tailored polymerization catalysts, which would target specific polymer properties. We report a series of platinum complexes bearing bisphosphinemonoxide ligands, which resemble those used in the polymerization catalysts of Nozaki and Chen. Their electronic properties are investigated experimentally, and trends are rationalized by using computed spectral properties. Benchmarking computational data with known experimental parameters further enhances the utility of both methods for determining optimal ligands for catalytic application.
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Affiliation(s)
- Natalie S Taylor
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Maxwell T Gordinier
- Department of Chemistry, Centre College, Danville, Kentucky 40422, United States
| | - Tejaskumar Suhagia
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Danna D Pinto
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Demetrius D Cherry
- Department of Chemistry, Centre College, Danville, Kentucky 40422, United States
| | - Dominic S Verry
- Department of Chemistry, Centre College, Danville, Kentucky 40422, United States
| | - Lindsey N Baker
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Nathan J DeYonker
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Karin J Young
- Department of Chemistry, Centre College, Danville, Kentucky 40422, United States
| | - Timothy P Brewster
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
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5
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Hall AJ, Robertson AG, Baker RW, Hill LR, Rendina LM. Significant cell uptake of Gd(III)-diphenylphosphoryl-diphenylphosphonium complexes: evidence for a new conformationally-dependent tumour cell targeting vector. Chem Commun (Camb) 2023; 59:12511-12514. [PMID: 37789720 DOI: 10.1039/d3cc02706f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
The synthesis, characterisation, and tumour cell uptake of six novel Gd(III)-diphenylphosphoryl-diphenylphosphonium complexes are reported. The propyl-linked Gd(III) complexes can accumulate inside human glioma cells at prodigious levels, approaching 1200%, over the parent triphenylphosphonium salts. DFT and quantum chemical topology analyses support a new type of conformationally-dependent tumour cell targeting vector.
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Affiliation(s)
- Andrew J Hall
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Amy G Robertson
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Robert W Baker
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Leila R Hill
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Louis M Rendina
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
- The University of Sydney Nano Institute, Sydney, NSW 2006, Australia
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6
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Hoff LV, Chesnokov GA, Linden A, Gademann K. Mechanistic Studies and Data Science-Guided Exploration of Bromotetrazine Cross-Coupling. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Lukas V. Hoff
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Gleb A. Chesnokov
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Anthony Linden
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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7
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Stepnicka P, Horký F. The coordination and catalytic chemistry of phosphanylferrocene chalcogenides. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Petr Stepnicka
- Charles University in Prague Department of Inorganic Chemistry, Faculty of Science Hlavova 2030 12840 Prague CZECH REPUBLIC
| | - Filip Horký
- Charles University: Univerzita Karlova Department of Inorganic Chemistry CZECH REPUBLIC
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8
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Samiee S, Gable RW. A new and unexpected coordination mode of a bis-phosphine monoxide (BPMO) ligand in a palladacycle complex. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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De Jesus Silva J, Bartalucci N, Jelier B, Grosslight S, Gensch T, Schünemann C, Müller B, Kamer PCJ, Copéret C, Sigman MS, Togni A. Development and Molecular Understanding of a Pd‐Catalyzed Cyanation of Aryl Boronic Acids Enabled by High‐Throughput Experimentation and Data Analysis. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100200] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jordan De Jesus Silva
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Niccolò Bartalucci
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Benson Jelier
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Samantha Grosslight
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City Utah 84112 United States
| | - Tobias Gensch
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City Utah 84112 United States
- Department of Chemistry TU Berlin Straße des 17. Juni 135 DE-10623 Berlin Germany
| | - Claas Schünemann
- Leibniz-Institute for Catalysis e. V. Albert-Einstein-Straße 29a DE-18059 Rostock Germany
| | - Bernd Müller
- Leibniz-Institute for Catalysis e. V. Albert-Einstein-Straße 29a DE-18059 Rostock Germany
| | - Paul C. J. Kamer
- Leibniz-Institute for Catalysis e. V. Albert-Einstein-Straße 29a DE-18059 Rostock Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Matthew S. Sigman
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City Utah 84112 United States
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
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10
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Chaudhary K, Trivedi M, Masram DT, Rath NP. Transition-metal complexes of group 12 with 1,1'-bis(phosphanyl)ferrocene ligands. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2021; 77:240-248. [PMID: 33949340 DOI: 10.1107/s2053229621004162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 04/18/2021] [Indexed: 11/10/2022]
Abstract
The syntheses of four new cadmium and zinc complexes with 1,1'-bis(phosphanyl)ferrocene ligands and their phosphine chalcogenide derivatives are reported. The complexes were characterized by elemental analyses and IR, 1H NMR, 31P NMR and electronic absorption spectroscopy. The crystal structures of dichlorido[1-diphenylphosphinoyl-1'-(di-tert-butylphosphanyl)ferrocene-κ2O,P]cadmium(II), [CdCl2{(C17H14OP)(C13H22P)Fe}] or CdCl2(κ2P,O-dppOdtbpf) (1), bis[μ-(tert-butyl)(1'-diphenylphosphinoylferrocen-1-yl)phosphinato-κ3O,O':O'']bis[chloridozinc(II)], [Zn2{(C9H13O2P)(C17H14OP)Fe}2Cl2] or [ZnOCl{κ2O,O'-Ph2POFcPO2(t-Bu)}]2 (2), 1,1'-bis(di-tert-butylthiophosphinoyl)ferrocene, [Fe(C13H22PS)2] or dtbpfS2 (3), and [1,1'-bis(dicyclohexylphosphanyl)ferrocene-κ2P,P'][chlorido/cyanido(0.25/1.75)]zinc(II), [Zn(CN)1.75Cl0.25{(C17H26P)2Fe}] or Zn(CN)2(κ2-dcpf) (4), were determined crystallographically. Compound 1 has tetrahedral geometry in which the CdII centre is coordinated by one dppOdtbpf ligand in a κ2-manner and by two Cl atoms, while compound 2 displays a centrosymmetric dimeric unit in which two oxide atoms bridge the two Zn atoms to generate an eight-membered ring. Compound 3 revealed a sandwich structure with both phosphane groups sulfurized. In compound 4, the ZnII atom adopts a tetrahedral geometry by coordinating to the 1,1'-bis(dicyclohexylphosphanyl)ferrocene ligand in a κ2-manner and to two cyanide ligands.
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Affiliation(s)
- Karan Chaudhary
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Manoj Trivedi
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Dhanraj T Masram
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Nigam P Rath
- Department of Chemistry & Biochemistry and Centre for Nanoscience, University of Missouri-St Louis, One University Boulevard, St Louis, MO 63121-4499, USA
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11
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Payard PA, Bohn A, Tocqueville D, Jaouadi K, Escoude E, Ajig S, Dethoor A, Gontard G, Perego LA, Vitale M, Ciofini I, Wagschal S, Grimaud L. Role of dppf Monoxide in the Transmetalation Step of the Suzuki–Miyaura Coupling Reaction. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00090] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pierre-Adrien Payard
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Antoine Bohn
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Damien Tocqueville
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Khaoula Jaouadi
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Emile Escoude
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Sanaa Ajig
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Annie Dethoor
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - Luca Alessandro Perego
- Discovery Product Development and Supply, Janssen Pharmaceutica, Hochstrasse 201, 8200 Schaffhausen, Switzerland
| | - Maxime Vitale
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Ilaria Ciofini
- PSL University, Institute of Chemistry for Health and Life Sciences, I-CLeHS, CNRS-Chimie ParisTech, 11 rue P. et M. Curie, F-75005 Paris 05 (France)
| | - Simon Wagschal
- Discovery Product Development and Supply, Janssen Pharmaceutica, Hochstrasse 201, 8200 Schaffhausen, Switzerland
| | - Laurence Grimaud
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
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12
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Escudero-Casao M, Licini G, Orlandi M. Enantioselective α-Arylation of Ketones via a Novel Cu(I)-Bis(phosphine) Dioxide Catalytic System. J Am Chem Soc 2021; 143:3289-3294. [PMID: 33635068 PMCID: PMC8041290 DOI: 10.1021/jacs.0c13236] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Indexed: 12/15/2022]
Abstract
A novel catalytic system based on copper(I) and chiral bis(phosphine) dioxides is described. This allows the arylation of silyl enol ethers to access enolizable α-arylated ketones in good yields and enantiomeric excess up to 95%. Noncyclic ketones are amenable substrates with this method, which complements other approaches based on palladium catalysis. Optimization of the ligand structure is accomplished via rational design driven by correlation analysis. Preliminary mechanistic hypotheses are also evaluated in order to identify the role of chiral bis(phosphine) dioxides.
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Affiliation(s)
| | - Giulia Licini
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
- CIRCC−Consorzio Interuniversitario
per le Reattività Chimiche e la Catalisi, University of Padova, via Marzolo 1, 35131 Padova, Italy
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13
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Hager A, Guimond N, Grunenberg L, Hanisch C, Steiger S, Preuss A. Palladium-Catalyzed C–O Cross-Coupling as a Replacement for a Mitsunobu Reaction in the Development of an Androgen Receptor Antagonist. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anastasia Hager
- Chemical and Pharmaceutical Development Department, Bayer AG Pharmaceuticals, Friedrich-Ebert-Str. 217-333, 42096 Wuppertal, Germany
| | - Nicolas Guimond
- Chemical and Pharmaceutical Development Department, Bayer AG Pharmaceuticals, Friedrich-Ebert-Str. 217-333, 42096 Wuppertal, Germany
| | - Lars Grunenberg
- Chemical and Pharmaceutical Development Department, Bayer AG Pharmaceuticals, Friedrich-Ebert-Str. 217-333, 42096 Wuppertal, Germany
| | - Christine Hanisch
- Chemical and Pharmaceutical Development Department, Bayer AG Pharmaceuticals, Friedrich-Ebert-Str. 217-333, 42096 Wuppertal, Germany
| | - Sebastian Steiger
- Chemical and Pharmaceutical Development Department, Bayer AG Pharmaceuticals, Friedrich-Ebert-Str. 217-333, 42096 Wuppertal, Germany
| | - André Preuss
- Chemical and Pharmaceutical Development Department, Bayer AG Pharmaceuticals, Friedrich-Ebert-Str. 217-333, 42096 Wuppertal, Germany
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14
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Dong Z, Chen C, Wang J, Xu J, Yang Z. Dual roles of bisphosphines and epoxides: Rh-catalyzed highly chemoselective and diastereoselective (3 + 2) transannulations of 1,2,3-thiadiazoles with cyanoepoxides. Org Chem Front 2021. [DOI: 10.1039/d1qo01220g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Dual roles of bisphosphines and epoxides are demonstrated in highly chemoselective and diastereoselective (3 + 2) transannulations.
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Affiliation(s)
- Ziyang Dong
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Cunzhi Chen
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Jing Wang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Jiaxi Xu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Zhanhui Yang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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15
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Moore MJ, Qu S, Tan C, Cai Y, Mogi Y, Keith DJ, Boger DL. Next-Generation Total Synthesis of Vancomycin. J Am Chem Soc 2020; 142:16039-16050. [PMID: 32885969 PMCID: PMC7501256 DOI: 10.1021/jacs.0c07433] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A next-generation total synthesis of vancomycin aglycon is detailed that was achieved in 17 steps (longest linear sequence, LLS) from the constituent amino acid subunits with kinetically controlled diastereoselective introduction of all three elements of atropisomerism. In addition to new syntheses of three of the seven amino acid subunits, highlights of the approach include a ligand-controlled atroposelective one-pot Miyaura borylation-Suzuki coupling sequence for introduction of the AB biaryl axis of chirality (>20:1 dr), an essentially instantaneous and scalable macrolactamization of the AB ring system nearly free of competitive epimerization (>30:1 dr), and two room-temperature atroposelective intramolecular SNAr cyclizations for sequential CD (8:1 dr) and DE ring closures (14:1 dr) that benefit from both preorganization by the preformed AB ring system and subtle substituent effects. Combined with a protecting group free two-step enzymatic glycosylation of vancomycin aglycon, this provides a 19-step total synthesis of vancomycin. The approach paves the way for large-scale synthetic preparation of pocket-modified vancomycin analogues that directly address the underlying mechanism of resistance to vancomycin.
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Affiliation(s)
- Maxwell J. Moore
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Shiwei Qu
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Ceheng Tan
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Yu Cai
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Yuzo Mogi
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - D. Jamin Keith
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Dale L. Boger
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
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16
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Sirois LE, Lao D, Xu J, Angelaud R, Tso J, Scott B, Chakravarty P, Malhotra S, Gosselin F. Process Development Overcomes a Challenging Pd-Catalyzed C–N Coupling for the Synthesis of RORc Inhibitor GDC-0022. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Yasui S, Yamazaki S. 31
P NMR spectroscopic analysis on photooxidation of 1,n‐bis(diphenylphosphino)alkanes with the aid of DFT calculations. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shinro Yasui
- Institute of Human and Environmental SciencesTezukayama University Nara Japan
| | - Shoko Yamazaki
- Department of ChemistryNara University of Education Nara Japan
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18
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Nguyen QH, Guo SM, Royal T, Baudoin O, Cramer N. Intermolecular Palladium(0)-Catalyzed Atropo-enantioselective C–H Arylation of Heteroarenes. J Am Chem Soc 2020; 142:2161-2167. [DOI: 10.1021/jacs.9b12299] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qui-Hien Nguyen
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Shu-Min Guo
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Titouan Royal
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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19
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Joshi A, Donnecke S, Granot O, Shin D, Collins S, Paci I, Scott McIndoe J. Reactive metallocene cations as sensitive indicators of gas-phase oxygen and water. Dalton Trans 2020; 49:7028-7036. [DOI: 10.1039/d0dt00798f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Gas-phase oxidation of air-sensitive organometallic compounds does not proceed to a significant extent in mass spectrometric analysis unless a vacant coordination site is generated, making nitrogen generators a suitable source of desolvation gas.
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Affiliation(s)
- Anuj Joshi
- Department of Chemistry
- University of Victoria
- Canada
| | | | - Ori Granot
- Department of Chemistry
- University of Victoria
- Canada
| | - Dongju Shin
- Department of Chemistry
- University of Victoria
- Canada
| | | | - Irina Paci
- Department of Chemistry
- University of Victoria
- Canada
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20
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Nayeri S, Jamali S, Pavlovskiy VV, Porsev VV, Evarestov RA, Kisel KS, Koshevoy IO, Shakirova JR, Tunik SP. A Rare Type of Rhenium(I) Diimine Complexes with Unsupported Coordinated Phosphine Oxide Ligands: Synthesis, Structural Characterization, Photophysical and Theoretical Study. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900617] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sara Nayeri
- Department of Chemistry Sharif University of Technology P.O. Box 11155‐3516 Tehran Iran
| | - Sirous Jamali
- Department of Chemistry Sharif University of Technology P.O. Box 11155‐3516 Tehran Iran
| | - Vladimir V. Pavlovskiy
- Department of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Vitaly V. Porsev
- Department of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Robert A. Evarestov
- Department of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Kristina S. Kisel
- Department of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Igor O. Koshevoy
- Department of Chemistry University of Eastern Finland 80101 Joensuu Finland
| | - Julia R. Shakirova
- Department of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Sergey P. Tunik
- Department of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
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21
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Kathe P, Fleischer I. Cooperative Use of Brønsted Acids and Metal Catalysts in Tandem Isomerization Reactions of Olefins. ChemCatChem 2019. [DOI: 10.1002/cctc.201900830] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Prasad Kathe
- Institute of Organic Chemistry Faculty of Mathematics and Natural SciencesEberhard-Karls University Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Ivana Fleischer
- Institute of Organic Chemistry Faculty of Mathematics and Natural SciencesEberhard-Karls University Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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22
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The reactions of RuCl3(NO)(PPh3)2 and RuCl3(NO)·H2O with Ph2P(CH2) P(O)Ph2, n = 1, 2, or 3: Crystal structures of ruthenium nitrosyl complexes containing monodentate and chelating Ph2P(CH2) P(O)Ph2 ligands. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Guo Z, Li M, Mou XQ, He G, Xue XS, Chen G. Radical C–H Arylation of Oxazoles with Aryl Iodides: dppf as an Electron-Transfer Mediator for Cs2CO3. Org Lett 2018; 20:1684-1687. [DOI: 10.1021/acs.orglett.8b00530] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhengwei Guo
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Man Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xue-Qing Mou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| | - Xiao-Song Xue
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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24
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Rigid scaffolds for the design of molecular catalysts and biomimetic active sites: A case study of anthracene-based ligands for modeling mono-iron hydrogenase (Hmd). Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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25
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Ji Y, Li H, Hyde AM, Chen Q, Belyk KM, Lexa KW, Yin J, Sherer EC, Williamson RT, Brunskill A, Ren S, Campeau LC, Davies IW, Ruck RT. A rational pre-catalyst design for bis-phosphine mono-oxide palladium catalyzed reactions. Chem Sci 2017; 8:2841-2851. [PMID: 28553522 PMCID: PMC5427683 DOI: 10.1039/c6sc05472b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 01/15/2017] [Indexed: 12/11/2022] Open
Abstract
Significant catalyst loading reduction and increased reaction robustness have been achieved for a Pd-catalyzed asymmetric intramolecular C-N coupling through comprehensive mechanistic studies. Detailed kinetic, spectroscopic, and crystallographic analyses revealed that the mono-oxidation of the bis-phosphine ligand is critical for a successful transformation. 31P NMR studies provided an understanding of the inefficient activation of the Pd(OAc)2/(R,R)-QuinoxP* pre-catalyst to form the active bis-phosphine mono-oxide-Pd(0) catalyst with competitive formation of a less active (R,R)-QuinoxP*·PdBr2 complex. Based on these detailed mechanistic studies, a new series of bis-phosphine mono-oxides (BPMO)-ligated Pd(ii) pre-catalysts have been rationally developed that allow for reliable and complete catalyst activation which should have general utility in academic and industrial settings.
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Affiliation(s)
- Yining Ji
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Hongming Li
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Alan M Hyde
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Qinghao Chen
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Kevin M Belyk
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Katrina W Lexa
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Jingjun Yin
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Edward C Sherer
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - R Thomas Williamson
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Andrew Brunskill
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Sumei Ren
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Louis-Charles Campeau
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Ian W Davies
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
| | - Rebecca T Ruck
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , USA .
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26
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Khatua S, Naskar T, Nandi C, Majumdar A. Mononuclear bis(dithiolene) Mo(iv) and W(iv) complexes with P,P; S,S; O,S and O,O donor ligands: a comparative reactivity study. NEW J CHEM 2017. [DOI: 10.1039/c7nj01797a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Comparative redox reactions of eight MoIV/WIVcomplexes with P,P; S,S; S,O and O,O donor ligands are presented.
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Affiliation(s)
- S. Khatua
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - T. Naskar
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - C. Nandi
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - A. Majumdar
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
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27
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Ladd CL, Charette AB. Access to Cyclopropyl-Fused Azacycles via a Palladium-Catalyzed Direct Alkenylation Strategy. Org Lett 2016; 18:6046-6049. [PMID: 27934342 DOI: 10.1021/acs.orglett.6b02982] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Palladium-catalyzed direct alkenylation of cyclopropyl C-H bonds proceeds in high efficiency. This transformation provides access to novel cyclopropyl-fused azacycles. Ligand studies suggest that bisphosphine monoxide analogues of dppf and rac-BINAP are the active ligand species. Preliminary results support that both BozPhos and IPrMonophos ligands can achieve high enantioinduction for this novel direct alkenylation reaction. To date, this represents the first example of enantioselective C-H functionalization employing a bisphosphine monoxide ligand.
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Affiliation(s)
- Carolyn L Ladd
- Centre in Green Chemistry and Catalysis, Faculty of Arts and Sciences, Department of Chemistry, Université de Montreal , P.O. Box 6128, Station Downtown, Montreal, Quebec, Canada , H3C 3J7
| | - André B Charette
- Centre in Green Chemistry and Catalysis, Faculty of Arts and Sciences, Department of Chemistry, Université de Montreal , P.O. Box 6128, Station Downtown, Montreal, Quebec, Canada , H3C 3J7
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28
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Goldbach V, Falivene L, Caporaso L, Cavallo L, Mecking S. Single-Step Access to Long-Chain α,ω-Dicarboxylic Acids by Isomerizing Hydroxycarbonylation of Unsaturated Fatty Acids. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02622] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Verena Goldbach
- Chair
of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany
| | - Laura Falivene
- KAUST
Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Lucia Caporaso
- Department
of Chemistry, University of Salerno, Via Ponte Don Melillo, 84084-Fisciano, Salerno, Italy
| | - Luigi Cavallo
- KAUST
Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Stefan Mecking
- Chair
of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany
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29
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Lee E, Bae DY, Park S, Oliver AG, Kim Y, Yandulov DV. A Palladium(II) Peroxido Complex Supported by the Smallest Steric N‐Heterocyclic Carbene,
I
Me = 1,3‐Dimethylimidazole‐2‐ylidene, and Its Reactivity by Oxygen‐Atom Transfer. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eunsung Lee
- Department of Chemistry Stanford University 94305‐5080 Stanford CA USA
- Center for Self‐assembly and Complexity (CSC) Institute for Basic Science (IBS) 790‐784 Pohang Republic of Korea
- Department of Chemistry and Division of Advanced Materials Science Pohang University of Science and Technology 790‐784 Pohang Republic of Korea
| | - Dae Young Bae
- Center for Self‐assembly and Complexity (CSC) Institute for Basic Science (IBS) 790‐784 Pohang Republic of Korea
- Department of Chemistry and Division of Advanced Materials Science Pohang University of Science and Technology 790‐784 Pohang Republic of Korea
| | - Sungho Park
- Center for Self‐assembly and Complexity (CSC) Institute for Basic Science (IBS) 790‐784 Pohang Republic of Korea
| | - Allen G. Oliver
- Department of Chemistry and Biochemistry University of Notre Dame 46556 Notre Dame IN USA
| | - Yonghwi Kim
- Center for Self‐assembly and Complexity (CSC) Institute for Basic Science (IBS) 790‐784 Pohang Republic of Korea
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30
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Borrajo-Calleja GM, Bizet V, Mazet C. Palladium-Catalyzed Enantioselective Intermolecular Carboetherification of Dihydrofurans. J Am Chem Soc 2016; 138:4014-7. [PMID: 26978243 DOI: 10.1021/jacs.6b02158] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel enantioselective Pd-catalyzed intermolecular carboetherification of dihydrofurans is reported. The in situ generation of chiral bis-phosphine mono-oxide ligands is crucial, and a general catalytic system has been identified based on this approach. It provides access to a variety of fused tetrahydrofurobenzofurans in consistently high yield and enantiomeric excess.
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Affiliation(s)
- Gustavo M Borrajo-Calleja
- Department of Organic Chemistry, University of Geneva , 30 quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Vincent Bizet
- Department of Organic Chemistry, University of Geneva , 30 quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Clément Mazet
- Department of Organic Chemistry, University of Geneva , 30 quai Ernest Ansermet, 1211 Geneva, Switzerland
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31
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Ji Y, Plata RE, Regens CS, Hay M, Schmidt M, Razler T, Qiu Y, Geng P, Hsiao Y, Rosner T, Eastgate MD, Blackmond DG. Mono-Oxidation of Bidentate Bis-phosphines in Catalyst Activation: Kinetic and Mechanistic Studies of a Pd/Xantphos-Catalyzed C-H Functionalization. J Am Chem Soc 2015; 137:13272-81. [PMID: 26461028 DOI: 10.1021/jacs.5b01913] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Kinetic, spectroscopic, crystallographic, and computational studies probing a Pd-catalyzed C-H arylation reaction reveal that mono-oxidation of the bis-phosphine ligand is critical for the formation of the active catalyst. The bis-phosphine mono-oxide is shown to be a hemilabile, bidentate ligand for palladium. Isolation of the oxidative addition adduct, with structural elucidation by X-ray analysis, showed that the mono-oxide was catalytically competent, giving the same reaction rate in the productive reaction as the Pd(II)/xantphos precursor. A dual role for the carboxylate base in both catalyst activation and reaction turnover was demonstrated, along with the inhibiting effect of excess phosphine ligand. The generality of the role of phosphine mono-oxide complexes in Pd-catalyzed coupling processes is discussed.
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Affiliation(s)
- Yining Ji
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - R Erik Plata
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Christopher S Regens
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Michael Hay
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Michael Schmidt
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Thomas Razler
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Yuping Qiu
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Peng Geng
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Yi Hsiao
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Thorsten Rosner
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Martin D Eastgate
- Chemical Development, Bristol-Myers Squibb , One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Donna G Blackmond
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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32
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Chen HW, Andy Hor TS, Pattacini R, Braunstein P. Unexpected synthesis of an Au2In2 tetrametallatricyclic complex from α-aminophosphines and formation of Au-In-P and Ag-In-P nanomaterials. Dalton Trans 2015; 44:16242-6. [PMID: 26327435 DOI: 10.1039/c5dt02457a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Four Au-(μ-phosphinite)-In units assemble to form an unprecedented Au2In2 12-membered metallacycle which intersects at the In centres an 8-membered ring containing two In-μ-phosphinate linkages, resulting in a tricyclic structure. Thermal treatment of this complex and of its Ag(I) analog affords Au-In-P and Ag-In-P nanomaterials, respectively.
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Affiliation(s)
- Hsiao Wei Chen
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Kent Ridge, Singapore 117543, Singapore.
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33
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Tymonko SA, Smith RC, Ambrosi A, Ober MH, Wang H, Denmark SE. Mechanistic significance of the si-o-pd bond in the palladium-catalyzed cross-coupling reactions of arylsilanolates. J Am Chem Soc 2015; 137:6200-18. [PMID: 25945516 PMCID: PMC4442671 DOI: 10.1021/jacs.5b02518] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Through the combination of reaction kinetics (both stoichiometric and catalytic), solution- and solid-state characterization of arylpalladium(II) arylsilanolates, and computational analysis, the intermediacy of covalent adducts containing Si-O-Pd linkages in the cross-coupling reactions of arylsilanolates has been unambiguously established. Two mechanistically distinct pathways have been demonstrated: (1) transmetalation via a neutral 8-Si-4 intermediate that dominates in the absence of free silanolate (i.e., stoichiometric reactions of arylpalladium(II) arylsilanolate complexes), and (2) transmetalation via an anionic 10-Si-5 intermediate that dominates in the cross-coupling under catalytic conditions (i.e., in the presence of free silanolate). Arylpalladium(II) arylsilanolate complexes bearing various phosphine ligands have been isolated, fully characterized, and evaluated for their kinetic competence under thermal (stoichiometric) and anionic (catalytic) conditions. Comparison of the rates for thermal and anionic activation suggested, but did not prove, that intermediates containing the Si-O-Pd linkage were involved in the cross-coupling process. The isolation of a coordinatively unsaturated, T-shaped arylpalladium(II) arylsilanolate complex ligated with t-Bu3P allowed the unambiguous demonstration of the operation of both pathways involving 8-Si-4 and 10-Si-5 intermediates. Three kinetic regimes were identified: (1) with 0.5-1.0 equiv of added silanolate (with respect to arylpalladium bromide), thermal transmetalation via a neutral 8-Si-4 intermediate; (2) with 1.0-5.0 equiv of added silanolate, activated transmetalation via an anionic 10-Si-5 intermediate; and (3) with >5.0 equiv of added silanolate, concentration-independent (saturation) activated transmetalation via an anionic 10-Si-5 intermediate. Transition states for the intramolecular transmetalation of neutral (8-Si-4) and anionic (10-Si-5) intermediates have been located computationally, and the anionic pathway is favored by 1.8 kcal/mol. The energies of all intermediates and transition states are highly dependent on the configuration around the palladium atom.
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Affiliation(s)
- Steven A Tymonko
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Russell C Smith
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Andrea Ambrosi
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Michael H Ober
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Hao Wang
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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34
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Yasui S, Yamazaki S. Intramolecular Stabilization of the Phosphine Radical Cation by the Second Phosphorus Atom during the Photooxidation of Diphosphines: 31P NMR Spectroscopic Analysis. CHEM LETT 2015. [DOI: 10.1246/cl.141027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shinro Yasui
- Faculty of Contemporary Human Life Science, Tezukayama University
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35
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Zhang L, Panteleev J, Lautens M. Metal–Ligand Binding Interactions in Rhodium/Palladium-Catalyzed Synthesis of Dihydroquinolines. J Org Chem 2014; 79:12159-76. [DOI: 10.1021/jo502074s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Lei Zhang
- Davenport Research Laboratories,
Department of Chemistry, University of Toronto, 80 St George St., Toronto, Ontario, Canada, M5S 3H6
| | - Jane Panteleev
- Davenport Research Laboratories,
Department of Chemistry, University of Toronto, 80 St George St., Toronto, Ontario, Canada, M5S 3H6
| | - Mark Lautens
- Davenport Research Laboratories,
Department of Chemistry, University of Toronto, 80 St George St., Toronto, Ontario, Canada, M5S 3H6
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36
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Oberhauser W, Manca G, Ienco A, Strabler C, Prock J, Weninger A, Gutmann R, Brüggeller P. Linear α-Olefins Obtained with Palladium(II) Complexes Bearing a Partially Oxidized Tetraphosphane. Organometallics 2014. [DOI: 10.1021/om500573q] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Werner Oberhauser
- Istituto
di Chimica dei Composti Organometallici (ICCOM-CNR), Area di Ricerca CNR di Firenze, via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Gabriele Manca
- Istituto
di Chimica dei Composti Organometallici (ICCOM-CNR), Area di Ricerca CNR di Firenze, via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Andrea Ienco
- Istituto
di Chimica dei Composti Organometallici (ICCOM-CNR), Area di Ricerca CNR di Firenze, via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Christof Strabler
- Institut
für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Johannes Prock
- Institut
für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Alexander Weninger
- Institut
für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Rene Gutmann
- Institut
für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Peter Brüggeller
- Institut
für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
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37
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He Z, Hou Z, Luo Y, Dilixiati Y, Eli W. Hydroesterification of styrene derivatives catalyzed by an acidic resin supporting palladium complexes. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00842h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Hahn C, Cruz L, Villalobos A, Garza L, Adeosun S. Synthesis, structure and catalytic activity of a gold(i) complex containing 1,2-bis(diphenylphosphino)benzene monoxide. Dalton Trans 2014; 43:16300-9. [DOI: 10.1039/c4dt02116a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A bisphosphine monoxide gold(i) complex, synthesized by a new protocol, is a highly active catalyst for the hydroarylation of ethylpropiolate.
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Affiliation(s)
- Christine Hahn
- Department of Chemistry
- Texas A&M University-Kingsville
- Kingsville, USA
| | - Leticia Cruz
- Department of Physical Sciences
- University of Texas of the Permian Basin
- Odessa, USA
| | - Amanda Villalobos
- Department of Physical Sciences
- University of Texas of the Permian Basin
- Odessa, USA
| | - Liliana Garza
- Department of Chemistry
- Texas A&M University-Kingsville
- Kingsville, USA
| | - Samuel Adeosun
- Department of Chemistry
- Texas A&M University-Kingsville
- Kingsville, USA
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39
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Choi G, Tsurugi H, Mashima K. Hemilabile N-xylyl-N'-methylperimidine carbene iridium complexes as catalysts for C-H activation and dehydrogenative silylation: dual role of N-xylyl moiety for ortho-C-H bond activation and reductive bond cleavage. J Am Chem Soc 2013; 135:13149-61. [PMID: 23914836 DOI: 10.1021/ja406519u] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Direct dehydrogenative silylation of pyridyl and iminyl substrates with triethylsilane was achieved using (L)Ir(cod)(X) (1) (L = a perimidine-based carbene ligand, X = OAc and OCOPh) complexes as catalysts under toluene refluxing conditions in the presence of norbornene as a hydrogen scavenger, and the silylated products were obtained in good yields. The isolated bis(cyclometalated)iridium complexes, (C(∧)C:)(C(∧)N)IrOAc (2) (C(∧)C: = a cyclometalated perimidine-carbene ligand and C(∧)N = a cyclometalated pyridyl- and iminyl-ligated aromatic substrate), were key intermediates, where cyclometalated five-membered metallacycles of substrates such as phenylpyridine were selectively formed before yielding mono-ortho-silylation products. The bis(cyclometalated)iridium complex ((Xy)C(∧)C:)(C(∧)N)IrOAc (2d) ((Xy)C(∧)C: = a cyclometalated N-xylyl-N'-methylperimidine-carbene ligand and C(∧)N = a 2-pyridylphenyl ligand), reacted with 2 equiv of Et3SiH to give an iridium hydride complex, (L(4))(C(∧)N)Ir(H)(SiEt3) (8d) (L(4) = N-CH3, N-3,5-(CH3)2C6H3 perimidine), via demetalation of a N-3,5-xylyl ring of the carbene ligand of 2d. The formation of 8d was confirmed by isolating the corresponding chloro complex (L(4))(C(∧)N)Ir(Cl)(SiEt3) (8d-Cl) by treatment with CCl4. The N-methyl moiety of the carbene ligand coordinated to 8d was cyclometalated in the presence of norbornene at room temperature to afford ((Me)C(∧)C:)(C(∧)N)Ir(SiEt3) (10d) ((Me)C(∧)C: = a cyclometalated N-xylyl-N'-methylperimidine-carbene), while at high temperature 8d reacted with norbornene and Et3SiH to afford the silylated product, 2-(2-triethylsilyl)phenylpyridine (3a) and norbornane. A deuterium labeling experiment using 2d and Et3SiD (excess) revealed the incorporation of deuterium atoms at two ortho-positions of the N-xylyl group (>90%) and at the 3-position of 2-pyridylphenyl ligand (ca. 40%) within 3 h at room temperature, indicating that the cyclometalation/demetalation of the N-xylylperimidine carbene and 2-phenylpyridine ligands were reversible processes. Isolation of these cyclometalated iridium complexes under controlled conditions and D-labeling experiments thus revealed a dual function of the N-aryl group bound to the perimidine-carbene ligand, which acted as both a neutral carbene ligand and a monoanionic ortho-metalated aryl-carbene ligand through reversible C-H bond activation and Ir-C bond cleavage of the N-aryl group during the catalytic cycle.
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Affiliation(s)
- Gyeongshin Choi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, CRST, JST, Toyonaka, Osaka 560-8531, Japan
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40
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Palladacycle phosphine complexes as homogeneous catalysts for the Heck cross-coupling reaction at low catalyst loading under aerobic conditions. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.04.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Huang ZJ, Cheng HJ, Dai M, Ni CY, Li HX, Hou KP, Ren ZG, Lang JP. Solvothermal syntheses and crystal structures of one 1D and two 3D [PbxIy]-based coordination polymers. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.02.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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42
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García-Álvarez J, Díez J, Gimeno J, Seifried CM, Vidal C. Synthesis and Reactivity of New Rhenium(I) Complexes Containing Iminophosphorane-Phosphine Ligands: Application to the Catalytic Isomerization of Propargylic Alcohols in Ionic Liquids. Inorg Chem 2013; 52:5428-37. [DOI: 10.1021/ic4003687] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joaquín García-Álvarez
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles,” Facultad de Química, Universidad de Oviedo,
E-33071, Oviedo, Spain
| | - Josefina Díez
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles,” Facultad de Química, Universidad de Oviedo,
E-33071, Oviedo, Spain
| | - José Gimeno
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles,” Facultad de Química, Universidad de Oviedo,
E-33071, Oviedo, Spain
| | - Christine M. Seifried
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles,” Facultad de Química, Universidad de Oviedo,
E-33071, Oviedo, Spain
| | - Cristian Vidal
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles,” Facultad de Química, Universidad de Oviedo,
E-33071, Oviedo, Spain
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Busacca CA, Qu B, Farber E, Haddad N, Grět N, Saha AK, Eriksson MC, Wu JP, Fandrick KR, Han S, Grinberg N, Ma S, Lee H, Li Z, Spinelli M, Gold A, Wang Z, Wang G, Wipf P, Senanayake CH. [2,3]-Sigmatropic Rearrangements of 2-Phosphineborane 2-Propen-1-ols: Rapid Access to Enantioenriched Diphosphine Monoxide Derivatives. Org Lett 2013; 15:1136-9. [DOI: 10.1021/ol400310h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carl A. Busacca
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Bo Qu
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Elisa Farber
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Nizar Haddad
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Nicole Grět
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Anjan K. Saha
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Magnus C. Eriksson
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Jiang-Ping Wu
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Keith R. Fandrick
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Steve Han
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Nelu Grinberg
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Shengli Ma
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Heewon Lee
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Zhibin Li
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Michael Spinelli
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Austin Gold
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Zhuzhu Wang
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Guijun Wang
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Peter Wipf
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Chris H. Senanayake
- Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States, Department of Chemistry, Center for Chemical Methodologies and Library Development, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States, and Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529, United States
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45
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Machan CW, Lifschitz AM, Stern CL, Sarjeant AA, Mirkin CA. Crystallographic Snapshots of the Bond-Breaking Isomerization Reactions Involving Nickel(II) Complexes with Hemilabile Ligands. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201107620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Machan CW, Lifschitz AM, Stern CL, Sarjeant AA, Mirkin CA. Crystallographic Snapshots of the Bond-Breaking Isomerization Reactions Involving Nickel(II) Complexes with Hemilabile Ligands. Angew Chem Int Ed Engl 2011; 51:1469-72. [DOI: 10.1002/anie.201107620] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 11/21/2011] [Indexed: 11/10/2022]
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47
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Szalontai G, Besenyei G, Párkányi L. Homonuclear SQ-DQ correlations in solids: applications of the broadband BaBa scheme to reveal 31P-31P spatial correlations in two-, three-, four-, and five-spin systems. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2011; 49:801-811. [PMID: 22102509 DOI: 10.1002/mrc.2842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 09/14/2011] [Accepted: 09/26/2011] [Indexed: 05/31/2023]
Abstract
In this paper, we report on the use and limitations of the popular double-quantum recoupling sequence back-to-back in studies of (31)P-(31)P spatial proximities in Pd-phosphine complexes at medium field (9.38 T) under the conditions of fast MAS. The effects of internuclear distances in different spin systems and the impact of isotropic chemical shift and chemical shift anisotropy (CSA) offsets on the detectibility of SQ-DQ correlations were of particular interest to us. Selected model compounds with these requirements in mind were synthesized. By optimization of the excitation times of SQ-DQ correlations up to 4.6 Å could be obtained even in four-spin systems; however, certain long-range correlations may be weak or missing. Although under fast MAS, CSA values up to 270 ppm are well tolerated, in multi-spin systems in cases of isotropic chemical shift offsets larger than 50 ppm, the DQ coherences cannot be properly excited.
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48
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Wöste TH, Oestreich M. BINAP versus BINAP(O) in Asymmetric Intermolecular Mizoroki-Heck Reactions: Substantial Effects on Selectivities. Chemistry 2011; 17:11914-8. [DOI: 10.1002/chem.201101695] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Indexed: 11/07/2022]
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49
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Štěpnička P, Císařová I, Schulz J. Coordination and Catalytic Properties of a Semihomologous Dppf Congener, 1-(Diphenylphosphino)-1′-[(diphenylphosphino)methyl]ferrocene. Organometallics 2011. [DOI: 10.1021/om2004805] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Jiří Schulz
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
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50
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Huacuja R, Graham DJ, Fafard CM, Chen CH, Foxman BM, Herbert DE, Alliger G, Thomas CM, Ozerov OV. Reactivity of a Pd(I)−Pd(I) Dimer with O2: Monohapto Pd Superoxide and Dipalladium Peroxide in Equilibrium. J Am Chem Soc 2011; 133:3820-3. [DOI: 10.1021/ja200346a] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rafael Huacuja
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Daniel J. Graham
- Department of Chemistry, Brandeis University, MS015, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Claudia M. Fafard
- Department of Chemistry, Brandeis University, MS015, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Chun-Hsing Chen
- Department of Chemistry, Brandeis University, MS015, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bruce M. Foxman
- Department of Chemistry, Brandeis University, MS015, 415 South Street, Waltham, Massachusetts 02454, United States
| | - David E. Herbert
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Glen Alliger
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Christine M. Thomas
- Department of Chemistry, Brandeis University, MS015, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
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