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Jordan EJ, Calder EDE, Adcock HV, Male L, Nieger M, Slootweg JC, Jupp AR. Azophosphines: Synthesis, Structure and Coordination Chemistry. Chemistry 2024; 30:e202401358. [PMID: 38624247 DOI: 10.1002/chem.202401358] [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: 04/09/2024] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 04/17/2024]
Abstract
The conceptual replacement of nitrogen with phosphorus in common organic functional groups unlocks new properties and reactivity. The phosphorus-containing analogues of triazenes are underexplored but offer great potential as flexible and small bite-angle ligands. This manuscript explores the synthesis and characterisation of a family of air-stable azophosphine-borane complexes, and their subsequent deprotection to the free azophosphines. These compounds are structurally characterised, both experimentally and computationally, and highlight the availability of the phosphorus lone pair for coordination. This is confirmed by demonstrating that neutral azophosphines can act as ligands in Ru complexes, and can coordinate as monodentate or bidentate ligands in a controlled manner, in contrast to their nitrogen analogues.
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Affiliation(s)
- Emma J Jordan
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Ethan D E Calder
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Holly V Adcock
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Louise Male
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Martin Nieger
- Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, 00014, Helsinki, Finland
| | - J Chris Slootweg
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Andrew R Jupp
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
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2
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Gao P, Szostak M. Hydration Reactions Catalyzed by Transition Metal-NHC (NHC = N-Heterocyclic Carbene) Complexes. Coord Chem Rev 2023; 485:215110. [PMID: 37064328 PMCID: PMC10104449 DOI: 10.1016/j.ccr.2023.215110] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
The catalytic addition of water to unsaturated C-C or C-N π bonds represent one of the most important and environmentally sustainable methods to form C-O bonds for the production of synthetic intermediates, medicinal agents and natural products. The traditional acid-catalyzed hydration of unsaturated compounds typically requires strong acids or toxic mercury salts, which limits practical applications and presents safety and environmental concerns. Today, transition-metal-catalyzed hydration supported by NHC (NHC = N-heterocyclic carbene) ligands has attracted major attention. By rational design of ligands, choice of metals and counterions as well as mechanistic studies and the development of heterogeneous systems, major progress has been achieved for a broad range of hydration processes. In particular, the combination of NHC ligands with gold shows excellent reactivity compared with other catalytic systems; however, other systems based on silver, ruthenium, osmium, platinum, rhodium and nickel have also been discovered. Ancillary NHC ligands provide stabilization of transition metals and ensure high catalytic activity in hydration owing to their unique electronic and steric properties. NHC-Au(I) complexes are particularly favored for hydration of unsaturated hydrocarbons due to soft and carbophilic properties of gold. In this review, we present a comprehensive overview of hydration reactions catalyzed by transition metal-NHC complexes and their applications in catalytic hydration of different classes of π-substrates with a focus on the role of NHC ligands, types of metals and counterions.
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Affiliation(s)
- Pengcheng Gao
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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3
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Guerriero A, Peruzzini M, Gonsalvi L. Synthesis of New Ruthenium‐CAP Complexes and Use as Catalysts for Benzonitrile Hydration to Benzamide. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Antonella Guerriero
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM) Consiglio Nazionale delle Ricerche (CNR) Via Madonna del Piano 10 50019 Sesto Fiorentino (Florence) Italy
| | - Maurizio Peruzzini
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM) Consiglio Nazionale delle Ricerche (CNR) Via Madonna del Piano 10 50019 Sesto Fiorentino (Florence) Italy
| | - Luca Gonsalvi
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM) Consiglio Nazionale delle Ricerche (CNR) Via Madonna del Piano 10 50019 Sesto Fiorentino (Florence) Italy
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Rong MK, Holtrop F, Bobylev EO, Nieger M, Ehlers AW, Slootweg JC, Lammertsma K. Atypical and Asymmetric 1,3-P,N Ligands: Synthesis, Coordination and Catalytic Performance of Cycloiminophosphanes. Chemistry 2021; 27:14007-14016. [PMID: 34403555 PMCID: PMC8519111 DOI: 10.1002/chem.202101921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Indexed: 11/22/2022]
Abstract
Novel seven-membered cyclic imine-based 1,3-P,N ligands were obtained by capturing a Beckmann nitrilium ion intermediate generated in situ from cyclohexanone with benzotriazole, and then displacing it by a secondary phosphane under triflic acid promotion. These "cycloiminophosphanes" possess flexible non-isomerizable tetrahydroazepine rings with a high basicity; this sets them apart from previously reported iminophophanes. The donor strength of the ligands was investigated by using their P-κ1 - and P,N-κ2 -tungsten(0) carbonyl complexes, by determining the IR frequency of the trans-CO ligands. Complexes with [RhCp*Cl2 ]2 demonstrated the hemilability of the ligands, giving a dynamic equilibrium of κ1 and κ2 species; treatment with AgOTf gives full conversion to the κ2 complex. The potential for catalysis was shown in the RuII -catalyzed, solvent-free hydration of benzonitrile and the RuII - and IrI -catalyzed transfer hydrogenation of cyclohexanone in isopropanol. Finally, to enable access to asymmetric catalysts, chiral cycloiminophosphanes were prepared from l-menthone, as well as their P,N-κ2 -RhIII and a P-κ1 -RuII complexes.
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Affiliation(s)
- Mark K. Rong
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Flip Holtrop
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Eduard O. Bobylev
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Martin Nieger
- Department of ChemistryUniversity of HelsinkiA. I. Virtasen aukio 1, P.O. Box 55FIN-00014HelsinkiFinland
| | - Andreas W. Ehlers
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Department of ChemistryUniversity of JohannesburgOakland Park2006JohannesburgSouth Africa
- Present address: Van 't Hoff Institute for Molecular SciencesUniversity of AmsterdamP.O. Box 941571090 GDAmsterdamThe Netherlands
| | - J. Chris Slootweg
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Present address: Van 't Hoff Institute for Molecular SciencesUniversity of AmsterdamP.O. Box 941571090 GDAmsterdamThe Netherlands
| | - Koop Lammertsma
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Department of ChemistryUniversity of JohannesburgOakland Park2006JohannesburgSouth Africa
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5
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Arene-ruthenium(II) and osmium(II) complexes as catalysts for nitrile hydration and aldoxime rearrangement reactions. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120180] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Kandel R, Schatte G, Laverdure L, Mosey N, Jessop PG. Synthesis and coordination of a neutral phosphaguanidine and comparison of its basicity with a guanidine. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A phosphaguanidine [Me2NC(PPh2)=N i Pr], the analogous guanidine [Me2NC(NPh2)=N i Pr], and their hydrochloride (HCl) salts were prepared to study the influence of substituting a phosphorus atom for a nitrogen atom on the basicity of the two compounds and the bonding in their conjugate acids. The pK a values of both HCl salts were measured in acetonitrile by NMR titration. Surprisingly, the substitution of P for N has essentially no effect on basicity even though the geometry at that atom is changed. The presence of phenyl substituents in the protonated guanidine reduces the resonance in the CN3 core, whereas poor orbital overlap between P and C reduces the resonance in the N2CP core of the protonated phosphaguanidine. The neutral phosphaguanidine binds to a Cu(I) halide through both the Nimine and the P, which suggested that the basic N atom on the bound ligand may have little utility as a Brønsted base. Fortunately, however, a Cu(I) halide complex of the protonated phosphaguanidine is stable. Thus, the tendency of the basic N to bind to metals does not proscribe it serving as a metal-proximate Brønsted base.
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Affiliation(s)
- Ramjee Kandel
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Gabriele Schatte
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Laura Laverdure
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Nicholas Mosey
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Philip G. Jessop
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department of Chemistry, Queen’s University, Kingston, ON K7L 3N6, Canada
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Trivedi M, Dubey SK, Kaur G, Rath NP. Ru( ii)- and Ru( iv)-dmso complexes catalyze efficient and selective aqueous-phase nitrile hydration reactions under mild conditions. NEW J CHEM 2021. [DOI: 10.1039/d1nj03041h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Synthesis and characterization of new water-soluble Ru(ii)- and Ru(iv)-dmso complexes are reported which show good efficiency and selectivity for aqueous-phase nitrile hydration at 60 °C in air. Best performance is achieved using complex [RuCl2(dmso)3(NH3)]·PF6·Cl (3).
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Affiliation(s)
- Manoj Trivedi
- Department of Chemistry, University of Delhi, Delhi-110007, India
- Department of Chemistry, Sri Venkateswara College, University of Delhi, NewDelhi-110021, India
| | - Santosh Kumar Dubey
- Department of Chemistry, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra-136119, India
| | - Gurmeet Kaur
- Department of Chemistry, SGTB Khalsa College, 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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8
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Arafa WAA. Ru-Based Complexes as Heterogeneous Potential Catalysts for the Amidation of Aldehydes and Nitriles in Neat Water. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wael Abdelgayed Ahmed Arafa
- Chemistry Department, College of Science, Jouf University, P.O. Box 2014, Sakaka, Aljouf, Kingdom of Saudi Arabia
- Chemistry Department, Faculty of Science, Fayoum University, P.O. Box 63514, Fayoum, Egypt
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9
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Selective Hydration of Nitriles to Corresponding Amides in Air with Rh(I)-N-Heterocyclic Complex Catalysts. Catalysts 2020. [DOI: 10.3390/catal10010125] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A new synthetic method for obtaining [RhCl(cod)(NHC)] complexes (1–4) (cod = η4-1,5-cyclooctadiene, NHC = N-heterocyclic carbene: IMes, SIMes, IPr, and SIPr, respectively) is reported together with the catalytic properties of 1–4 in nitrile hydration. In addition to the characterization of 1–4 in solution by 13C NMR spectroscopy, the structures of complexes 3, and 4 have been established also in the solid state with single-crystal X-ray diffraction analysis. The Rh(I)-NHC complexes displayed excellent catalytic activity in hydration of aromatic nitriles (up to TOF = 276 h−1) in water/2-propanol (1/1 v/v) mixtures in air.
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10
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Rong MK, Chirila A, Franciolus D, Lutz M, Nieger M, Ehlers AW, Slootweg JC, Lammertsma K. Protic NHC Iridium Complexes with β-H Reactivity–Synthesis, Acetonitrile Insertion, and Oxidative Self-Activation. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00584] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark K. Rong
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Andrei Chirila
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - David Franciolus
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Martin Nieger
- Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, Helsinki, Finland
| | - Andreas W. Ehlers
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
- Department of Chemistry, Oakland Park 2006University of Johannesburg, Johannesburg 2006, South Africa
| | - J. Chris Slootweg
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Koop Lammertsma
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
- Department of Chemistry, Oakland Park 2006University of Johannesburg, Johannesburg 2006, South Africa
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11
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Sun Y, Jin W, Liu C. Trash to Treasure: Eco-Friendly and Practical Synthesis of Amides by Nitriles Hydrolysis in WEPPA. Molecules 2019; 24:molecules24213838. [PMID: 31653123 PMCID: PMC6864965 DOI: 10.3390/molecules24213838] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/15/2019] [Accepted: 10/21/2019] [Indexed: 11/21/2022] Open
Abstract
The hydration of nitriles to amides in a water extract of pomelo peel ash (WEPPA) was realized with moderate to excellent yields without using external transition metals, bases or organic solvents. This reaction features a broad substrate scope, wide functional group tolerance, prominent chemoselectivity, and good reusability. Notably, a magnification experiment in this bio-based solvent at 100 mmol further demonstrated its practicability.
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Affiliation(s)
- Yajun Sun
- The Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
| | - Weiwei Jin
- The Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
| | - Chenjiang Liu
- The Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
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12
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Guo B, de Vries JG, Otten E. Hydration of nitriles using a metal-ligand cooperative ruthenium pincer catalyst. Chem Sci 2019; 10:10647-10652. [PMID: 32110350 PMCID: PMC7020783 DOI: 10.1039/c9sc04624k] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 10/04/2019] [Indexed: 12/21/2022] Open
Abstract
The hydration of a broad range of aliphatic and (hetero)aromatic nitriles is reported via catalysis by metal–ligand cooperative Ru pincer complexes under very mild conditions.
Nitrile hydration provides access to amides that are important structural elements in organic chemistry. Here we report catalytic nitrile hydration using ruthenium catalysts based on a pincer scaffold with a dearomatized pyridine backbone. These complexes catalyze the nucleophilic addition of H2O to a wide variety of aliphatic and (hetero)aromatic nitriles in tBuOH as solvent. Reactions occur under mild conditions (room temperature) in the absence of additives. A mechanism for nitrile hydration is proposed that is initiated by metal–ligand cooperative binding of the nitrile.
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Affiliation(s)
- Beibei Guo
- Stratingh Institute for Chemistry , University of Groningen , Nijenborgh 4 , 9747 AG Groningen , The Netherlands .
| | - Johannes G de Vries
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock , Albert-Einstein-Strasse 29a , 18059 Rostock , Germany
| | - Edwin Otten
- Stratingh Institute for Chemistry , University of Groningen , Nijenborgh 4 , 9747 AG Groningen , The Netherlands .
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Kandel R, Schatte G, Jessop PG. Rh(i) and Ru(ii) phosphaamidine and phosphaguanidine (1,3-P,N) complexes and their activity for CO 2 hydrogenation. Dalton Trans 2019; 48:12512-12521. [PMID: 31363732 DOI: 10.1039/c9dt00602h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Phosphaamidine metal complexes Rh2Cl2[Ph2PC(Ph)[double bond, length as m-dash]NPh]2μ-CO (1), RuCl2[Ph2PC(Ph)[double bond, length as m-dash]N(Ph)]2 (2), [Rh{iPr2PC(Ph)[double bond, length as m-dash]NiPr}(COD)]BF4 (3), and RuCl2[iPr2PC(Ph)[double bond, length as m-dash]NiPr](DMSO)2 (4) are prepared by combining phosphaamidines Ph2P-C(Ph)[double bond, length as m-dash]NPh and iPr2P-C(Ph)[double bond, length as m-dash]NiPr (1,3-P,N) with their corresponding metal ions. Complexes 1 and 2 are stable in air while 3 and 4 are stable under inert conditions. For further comparison of structure and stability, a Ru(ii) phosphaguanidine complex, RuCl2[Me2NC(PPh2)[double bond, length as m-dash]NiPr](DMSO)2 (6) was prepared. Complex 6 is stable in air and in the presence of water. The structures of the phosphaamidine and phosphaguanidine complexes, determined using single crystal X-ray diffraction, revealed P,N bidentate coordination. While all five complexes have some activity as precatalysts, complex 6 was the most active.
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Affiliation(s)
- Ramjee Kandel
- Department of Chemistry, Queen's University, Kingston, ON, CanadaK7L 3N6.
| | - Gabriele Schatte
- Department of Chemistry, Queen's University, Kingston, ON, CanadaK7L 3N6.
| | - Philip G Jessop
- Department of Chemistry, Queen's University, Kingston, ON, CanadaK7L 3N6.
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14
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Ounkham WL, Weeden JA, Frost BJ. Aqueous‐Phase Nitrile Hydration Catalyzed by an In Situ Generated Air‐Stable Ruthenium Catalyst. Chemistry 2019; 25:10013-10020. [DOI: 10.1002/chem.201902224] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Whalmany L. Ounkham
- Department of Chemistry University of Nevada, Reno 1664 N. Virginia St Reno NV 89557-0216 USA
| | - Jason A. Weeden
- Department of Chemistry University of Nevada, Reno 1664 N. Virginia St Reno NV 89557-0216 USA
| | - Brian J. Frost
- Department of Chemistry University of Nevada, Reno 1664 N. Virginia St Reno NV 89557-0216 USA
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15
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Thirukovela NS, Balaboina R, Kankala S, Vadde R, Vasam CS. Activation of nitriles by silver(I) N-heterocyclic carbenes: An efficient on-water synthesis of primary amides. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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16
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Min L, Yang W, Weng Y, Zheng W, Wang X, Hu Y. A Method for Bischler-Napieralski-Type Synthesis of 3,4-Dihydroisoquinolines. Org Lett 2019; 21:2574-2577. [PMID: 30958675 DOI: 10.1021/acs.orglett.9b00534] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A new method for the Bischler-Napieralski-type synthesis of 3,4-dihydroisoquinolines was developed by a Tf2O-promoted tandem annulation from phenylethanols and nitriles. Its success was mainly due to the fact that a phenonium ion was formed in the process and practically functioned as a stable and reactive primary phenylethyl carbocation.
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Affiliation(s)
- Lin Min
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
| | - Weiguang Yang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
| | - Yunxiang Weng
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
| | - Weiping Zheng
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
| | - Xinyan Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
| | - Yuefei Hu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
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17
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Rong MK, Holtrop F, Slootweg JC, Lammertsma K. 1,3-P,N hybrid ligands in mononuclear coordination chemistry and homogeneous catalysis. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.08.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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18
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Fischer M, Steinert H, Schmidtmann M, Beckhaus R. Teaching c-phosphanylimines the titanaaziridine coordination mode. Dalton Trans 2019; 48:1936-1940. [DOI: 10.1039/c8dt04918a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The employment of a c-phosphanylimine for the synthesis of a novel titanaaziridine with an intramolecular phosphine donor side is reported, thus teaching the c-phosphanylimine a new coordination mode.
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Affiliation(s)
- Malte Fischer
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| | - Henning Steinert
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| | - Marc Schmidtmann
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| | - Ruediger Beckhaus
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
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19
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Sultana S, Borah G, Gogoi PK. Ru (III) Schiff-base complex anchored on nanosilica as an efficient and retrievable catalyst for hydration of nitriles. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4595] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Samim Sultana
- Department of Chemistry; Dibrugarh University; Dibrugarh Assam India
| | - Geetika Borah
- Department of Chemistry; Dibrugarh University; Dibrugarh Assam India
| | - Pradip K. Gogoi
- Department of Chemistry; Dibrugarh University; Dibrugarh Assam India
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Zou S, Wang S, Xi C. ROTf-induced annulation of heteroatom reagents and unsaturated substrates leading to cyclic compounds. ROYAL SOCIETY OPEN SCIENCE 2018; 5:181389. [PMID: 30564422 PMCID: PMC6281944 DOI: 10.1098/rsos.181389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 10/16/2018] [Indexed: 05/03/2023]
Abstract
The development of metal-free organic reactions is one of the hotspots in the synthesis of cyclic compounds. ROTf (alkyl trifluoromethanesulfonates), due to their good electrophilicity, are powerful alkylating reagents at heteroatoms such as nitrogen, oxygen, sulfur and phosphorus to induce an electrophilic centre for carbon-carbon or carbon-heteroatom bond formation. Inspired by this chemistry, a variety of research concentrating on heterocycles synthesis has been carried out. In this review, we mainly summarize the ROTf-induced annulation of heteroatom reagents such as nitriles, carbodiimides, azobenzenes, isothiocyanates, aldehydes, isocyanates and phosphaalkene with themselves or alkynes to afford cyclic compounds.
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Affiliation(s)
- Song Zou
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Sheng Wang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Chanjuan Xi
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Author for correspondence: Chanjuan Xi e-mail:
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Enow RAE, Lee WC, Cournoyer TD, Sunderland TL, Frost BJ. Unusual Water-Soluble Imino Phosphine Ligand: Enamine and Imine Derivatives of 1,3,5-Triaza-7-phosphaadamantane (PTA). Inorg Chem 2018; 57:9142-9152. [PMID: 30048119 DOI: 10.1021/acs.inorgchem.8b01167] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of water-soluble and air-stable E-enamine derivatives of 1,3,5-triaza-7-phosphaadamantane (PTA), PTA═C(R)NH2, 1-4, are reported along with data on E-Z isomerization and tautomerization to the imine form (PTA-CR═NH). Reaction of 1,3,5-triaza-7-phosphaamantane-6-yl lithium, PTA-Li, with aromatic nitriles afforded E-enamine derivatives of PTA in good yield (49-91%). Phosphines 1-4 are stable toward water and air, and do not appear to isomerize or tautomerize, unless coordinated to a metal or oxidized. The corresponding oxides, O═PTA═C(R)NH2 (5-8), were observed as ∼55/45 mixtures of E and Z isomers. Kinetic data on the E-Z isomerization is reported. Upon coordination of 1-4 to W(CO)4(pip)2, a κ1- P enamine is formed, [W(CO)4(pip)(κ1- P-PTA═CRNH2)]. Enamine-imine tautomerization of the metal bound phosphine was observed resulting in κ2- P, N imine complexes, [W(CO)4(κ2- P, N-PTA-CR═NH)], 9-12. The crystal structures of the κ1- P enamine 11a, κ2- P, N imine 9 and 12, phosphines 1 and 3, as well as phosphine oxide 8a were obtained. DFT calculations on the various isomers of the phosphines and phosphine oxides are also reported.
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Affiliation(s)
- Raphel A E Enow
- Department of Chemistry , University of Nevada , Reno , Nevada 89557-0216 , United States
| | - Wei-Chih Lee
- Department of Chemistry , University of Nevada , Reno , Nevada 89557-0216 , United States
| | - Travis D Cournoyer
- Department of Chemistry , University of Nevada , Reno , Nevada 89557-0216 , United States
| | - Travis L Sunderland
- Department of Chemistry , University of Nevada , Reno , Nevada 89557-0216 , United States
| | - Brian J Frost
- Department of Chemistry , University of Nevada , Reno , Nevada 89557-0216 , United States
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González-Fernández R, Crochet P, Cadierno V. Cymene-Osmium(II) Complexes with Amino-Phosphane Ligands as Precatalysts for Nitrile Hydration Reactions. ChemistrySelect 2018. [DOI: 10.1002/slct.201801023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rebeca González-Fernández
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC); Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; Julián Clavería 8 E-33006 Oviedo Spain
| | - Pascale Crochet
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC); Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; Julián Clavería 8 E-33006 Oviedo Spain
| | - Victorio Cadierno
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC); Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; Julián Clavería 8 E-33006 Oviedo Spain
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Garduño JA, Arévalo A, Flores-Alamo M, García JJ. Mn(i) organometallics containing the iPr2P(CH2)2PiPr2 ligand for the catalytic hydration of aromatic nitriles. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00416a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of a homogeneous hydration of aromatic nitriles catalyzed by manganese molecular compounds is reported.
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Affiliation(s)
- Jorge A. Garduño
- Facultad de Química
- Universidad Nacional Autónoma de México
- Mexico City
- Mexico
| | - Alma Arévalo
- Facultad de Química
- Universidad Nacional Autónoma de México
- Mexico City
- Mexico
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24
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Jia WG, Ling S, Fang SJ, Sheng EH. Half-sandwich ruthenium complexes with oxygen–nitrogen mixed ligands as efficient catalysts for nitrile hydration reaction. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.09.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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