1
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Lin S, Lin B, Zhang Z, Chen J, Luo Y, Xia Y. Construction of N-Acyliminophosphoranes via Iron(II)-Catalyzed Imidization of Phosphines with N-Acyloxyamides. Org Lett 2022; 24:3302-3306. [PMID: 35468280 DOI: 10.1021/acs.orglett.2c01238] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Employing FeCl2 as a cheap and readily available catalyst, a facile imidization of phosphines with N-acyloxyamides is described, affording synthetically useful N-acyliminophosphoranes with high functional group tolerance. The transformation is easily performed under an air atmosphere at room temperature and could be scaled up to gram scale with a catalyst loading of 1 mol %. The iminophosphoranyl moiety in the product was further utilized as an effective directing group for controllable ortho C(sp2)-H bond amidations under Rh(III) catalysis.
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Affiliation(s)
- Sen Lin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Bo Lin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Zongtao Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jianhui Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yanshu Luo
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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2
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Spillebout F, Stoyanov SR, Zelyak O, Stryker JM, Kovalenko A. Computational Investigation of the Metal and Ligand Substitution Effects on the Structure and Electronic States of the Phosphoranimide Tetramer Complexes of Cu(I), Ni(I), Co(I), and Fe(I). Inorg Chem 2022; 61:1471-1485. [PMID: 34994544 DOI: 10.1021/acs.inorgchem.1c03172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The structurally unique saddle-shaped paramagnetic tetrametallic clusters of Co(I) and Ni(I) with phosphoranimide ligands have been synthesized and proposed as catalyst precursors. The analogous Cu(I) nanocluster is planar and diamagnetic. These notable variations in geometry and ground electronic states indicate that the effect of metal and ligand substituents on the structure and electronic properties of these complexes requires investigation. We present a computational study of a series of these novel homoleptic complexes containing Co(I), Ni(I), and Cu(I) as well as Fe(I) coordinated to phosphoranimides with electron-donating and withdrawing substituents, conducted at the relativistic density functional theory level using ZORA-PBE/TZP. The optimized structures of the saddle-shaped Co(I) and Ni(I) and planar Cu(I) tetramers with linear N-M-N coordination are validated with respect to X-ray diffraction determinations. The ground-state analysis indicates that Cu(I) complexes are diamagnetic, whereas Ni(I) and Co(I) complexes are in high-spin states, in agreement with magnetic susceptibility measurements. The computational results show that Fe(I) complexes are saddle shaped and high spin. The Co(I) complex is stabilized by a metal macrocycle distortion from square to diamond, as elucidated from its Walsh diagram. The effects of metals and ligand substituents on the ground electronic state, metal center coordination environment, and energy of the complexes are investigated. The bulky tertiary butyl substituent causes the largest saddle-shape distortion of the tetramer marcocycle, which partially offsets its electron-donating effect. Macrocycle distortions with N-M-N site angles ranging from obtuse to alternating obtuse reflex are correlated with the increasing number of unpaired electrons. The phenyl-substituted complexes are expected to have the highest reactivity toward electrophiles. Understanding the interplay between structural and electronic parameters is intended to guide the development of synthetic cooperative systems for multielectron redox reactions, models of biological systems, and molecular magnets.
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Affiliation(s)
- Faustine Spillebout
- Nanotechnology Research Centre, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.,Department of Mechanical Engineering, University of Alberta, 10-203 Donadeo Innovation Centre for Engineering, Edmonton, Alberta T6G 1H9, Canada
| | - Stanislav R Stoyanov
- Nanotechnology Research Centre, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.,Department of Mechanical Engineering, University of Alberta, 10-203 Donadeo Innovation Centre for Engineering, Edmonton, Alberta T6G 1H9, Canada.,Natural Resources Canada, CanmetENERGY Devon, 1 Oil Patch Drive, Devon, Alberta T9G 1A8, Canada
| | - Oleksandr Zelyak
- Nanotechnology Research Centre, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.,Department of Mechanical Engineering, University of Alberta, 10-203 Donadeo Innovation Centre for Engineering, Edmonton, Alberta T6G 1H9, Canada
| | - Jeffrey M Stryker
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Andriy Kovalenko
- Nanotechnology Research Centre, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.,Department of Mechanical Engineering, University of Alberta, 10-203 Donadeo Innovation Centre for Engineering, Edmonton, Alberta T6G 1H9, Canada.,Department of Biological Sciences, University of Alberta, CW 405, Biological Sciences Building, Edmonton, Alberta T6G 2E9, Canada
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3
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Ahadi EM, Kejani AA, Khosravi H, Vavsari VF, Balalaie S, Rominger F, Bijanzadeh HR. Domino Decarboxylative Arylation and C-O Selective Bond Formation toward Chromeno[2,3- b]pyridine-2-one Skeletons. J Org Chem 2021; 86:12705-12713. [PMID: 34495658 DOI: 10.1021/acs.joc.1c01220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Practical Pd-catalyzed 2-pyridones were designed to achieve chromeno[2,3-b]pyridine-2-ones. The reaction proceeds through domino nucleophilic addition and decarboxylative arylation, respectively. This methodology offers a moderately efficient approach to construct the bioactive, fused-heterocyclic skeletons via selective C-O bond formation and decarboxylative arylation in a single step with high selectivity and good yields.
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Affiliation(s)
- Elmira Meghrazi Ahadi
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697 Tehran, Iran
| | - Alireza Abbasi Kejani
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697 Tehran, Iran
| | - Hormoz Khosravi
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697 Tehran, Iran
| | - Vaezeh Fathi Vavsari
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697 Tehran, Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697 Tehran, Iran.,Medical Biology Research Center, Kermanshah University of Medical Sciences, 6715847141 Kermanshah, Iran
| | - Frank Rominger
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Hamid Reza Bijanzadeh
- Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, 46417-76489 Tehran, Iran
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4
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Silver-catalyzed unstrained C(CO)-alkyl bond scission via [3+2]/retro-[3+2] cycloaddition of ketones with N-isocyanoiminotriphenylphosphorane. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1000-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Seppänen O, Aikonen S, Muuronen M, Alamillo-Ferrer C, Burés J, Helaja J. Dual H-bond activation of NHC-Au(i)-Cl complexes with amide functionalized side-arms assisted by H-bond donor substrates or acid additives. Chem Commun (Camb) 2020; 56:14697-14700. [PMID: 33169740 DOI: 10.1039/d0cc05999d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Novel approach with amide-tethered H-bond donor NHC ligands enabled Au(i)-catalysis via H-bonding. The plain NHC-Au(i)-Cl complex catalysed conversions of terminal N-propynamides to oxazolines, and enyne cycloisomerization with an acid additive, in DCM at RT. DFT calculations enlightened the function of the side-arm in the activation.
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Affiliation(s)
- Otto Seppänen
- Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, 00014, Finland. juho.helaja@helsinki
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6
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Xing X, Zhang S, Thierer LM, Gau MR, Carroll PJ, Tomson NC. Reversible nickel-metallacycle formation with a phosphinimine-based pincer ligand. Dalton Trans 2020; 49:7796-7806. [PMID: 32459241 PMCID: PMC7370460 DOI: 10.1039/d0dt01118e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pincer ligands have a remarkable ability to impart control over small molecule activation chemistry and catalytic activity; therefore, the design of new pincer ligands and the exploration of their reactivity profiles continues to be a frontier in synthetic inorganic chemistry. In this work, a novel, monoanionic NNN pincer ligand containing two phosphinimine donors was used to create a series of mononuclear Ni complexes. Ligand metallation in the presence of NaOPh yielded a nickel phenoxide complex that was used to form a mononuclear hydride complex on treatment with pinacolborane. Attempts at ligand metallation with NaN(SiMe3)2 resulted in the activation of both phosphinimine methyl groups to yield an anionic, cis-dialkyl product, in which dissociation of one phosphinimine nitrogen leads to retention of a square planar coordination environment about Ni. Protonolysis of this dialkyl species generated a monoalkyl product that retained the 4-membered metallacycle. The insertion of 2,6-dimethylphenyl isocyanide (xylNC) into this nickel metallacycle, followed by proton transfer, generated a new five-membered nickel metallacycle. Kinetic studies suggested rate-limiting proton transfer (KIE ≥ 3.9 ± 0.5) from the α-methylene unit of the putative iminoacyl intermediate.
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Affiliation(s)
- Xiujing Xing
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, PA 19104, USA.
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7
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Affiliation(s)
- Zhuang Mao Png
- Institute of Materials Research and Engineering, the Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Teck Lip Dexter Tam
- Institute of Materials Research and Engineering, the Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Jianwei Xu
- Institute of Materials Research and Engineering, the Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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8
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Zn(OTf)2-catalyzed, microwave-promoted synthesis of 2-substituted 5-methyloxazoles from propargylic amides. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.02.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Nalivela KS, Rudolph M, Baeissa ES, Alhogbi BG, Mkhalid IAI, Hashmi ASK. Sequential Au/Cu Catalysis: A Two Catalyst One-Pot Protocol for the Enantioselective Synthesis of Oxazole α-Hydroxy Esters via
Intramolecular Cyclization/Intermolecular Alder-Ene Reaction. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800246] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kumara Swamy Nalivela
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Elham S. Baeissa
- Chemistry Department, Faculty of Science; King Abdulaziz University; Jeddah 21589 Saudi Arabia
| | - Basma G. Alhogbi
- Chemistry Department, Faculty of Science; King Abdulaziz University; Jeddah 21589 Saudi Arabia
| | - Ibraheem A. I. Mkhalid
- Chemistry Department, Faculty of Science; King Abdulaziz University; Jeddah 21589 Saudi Arabia
| | - A. Stephen K. Hashmi
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Chemistry Department, Faculty of Science; King Abdulaziz University; Jeddah 21589 Saudi Arabia
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10
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Shi X, Sasmal A, Soulé JF, Doucet H. Metal-Catalyzed C−H Bond Activation of 5-Membered Carbocyclic Rings: A Powerful Access to Azulene, Acenaphthylene and Fulvene Derivatives. Chem Asian J 2017; 13:143-157. [DOI: 10.1002/asia.201701455] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/02/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Xinzhe Shi
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Arpan Sasmal
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Jean-François Soulé
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Henri Doucet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
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11
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Mali JK, Takale BS, Telvekar VN. Readily switchable one-pot 5-exo-dig cyclization using a palladium catalyst. RSC Adv 2017. [DOI: 10.1039/c6ra25857c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A convenient, ligand-free, Pd(OAc)2-catalyzed one-pot reaction has been developed for the synthesis of oxazolines and oxazoles from easily available acid chlorides and propargylamine.
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Affiliation(s)
- Jaishree K. Mali
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Mumbai 400 019
- India
| | - Balaram S. Takale
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Mumbai 400 019
- India
| | - Vikas. N. Telvekar
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Mumbai 400 019
- India
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12
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Bay S, Baumeister T, Hashmi ASK, Röder T. Safe and Fast Flow Synthesis of Functionalized Oxazoles with Molecular Oxygen in a Microstructured Reactor. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00118] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sarah Bay
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Tobias Baumeister
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
- Chemistry
Department, Faculty of Science, King Abdulaziz University (KAU), 21589 Jeddah, Saudi Arabia
| | - Thorsten Röder
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
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13
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Wong VHL, White AJP, Hor TSA, Hii KKM. Silver-Catalyzed Cyclization of Propargylic Amides to Oxazolines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500610] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Jiang Y, Wei Y, Tang XY, Shi M. Gold(I)-Catalyzed Selective Heterocyclization of Propargylic Thioureas: Mechanistic Study of Competitive Gold-Activation Mode. Chemistry 2015; 21:7675-81. [DOI: 10.1002/chem.201500466] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Indexed: 11/08/2022]
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15
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16
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Villuendas P, Serrano E, Urriolabeitia EP. Pd-catalysed ortho-alkoxylation of benzamides N-protected with an iminophosphorane functionality. NEW J CHEM 2015. [DOI: 10.1039/c5nj00189g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mild Pd-catalysed ortho-alkoxylation of benzamides, protected as keto-stabilised iminophosphoranes, with alcohols, is regioselective and tolerates different substituents and alcohols.
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Affiliation(s)
- Pedro Villuendas
- Instituto de Síntesis Química y Catálisis Homogénea
- ISQCH (CSIC-Universidad de Zaragoza)
- 50009 Zaragoza
- Spain
| | - Elena Serrano
- Centro Universitario de la Defensa
- Academia General Militar
- 50090 Zaragoza
- Spain
| | - Esteban P. Urriolabeitia
- Instituto de Síntesis Química y Catálisis Homogénea
- ISQCH (CSIC-Universidad de Zaragoza)
- 50009 Zaragoza
- Spain
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17
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Cheisson T, Auffrant A. Versatile coordination chemistry of a bis(methyliminophosphoranyl)pyridine ligand on copper centres. Dalton Trans 2014; 43:13399-409. [PMID: 25076168 DOI: 10.1039/c4dt01794c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The coordination of a bis(methyliminophosphoranyl)pyridine ligand (L) to copper centres was studied. The use of copper(I) bromide precursors gave access to [LCuBr] (2) in which only one iminophosphorane arm is coordinated to the metal, as observed by X-ray crystallography and MAS (31)P NMR. Its fluxional behaviour in solution was demonstrated by VT-(31)P NMR, and investigated by DFT calculations. On the other hand, coordination of L to [Cu(CH3CN)4]PF6 gave a dimer [L2Cu2](PF6)2 (3) in which the two copper centres do not have the same coordination sphere as shown by X-ray crystallography. Addition of a strong ligand such as PEt3 allows the preparation of a cationic monomeric copper complex (4) in which L has a behaviour similar to that observed for 2. Synthesis of copper(II) complexes was also achieved by chemical oxidation of 2, which shows an irreversible oxidation at -0.36 vs. Fc(+)/Fc, or directly via the coordination of L to CuBr2. In [LCuBr2] (5), L adopts a pincer coordination. Finally, the catalytic behaviour of copper(I) complexes 2 and 3 was investigated in cyclopropanation reactions and [3 + 2] cycloadditions.
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Affiliation(s)
- Thibault Cheisson
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, UMR CNRS 9168, F-91128 Palaiseau Cedex, France.
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18
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Aguilar D, González G, Villuendas P, Urriolabeitia EP. Bis-cyclometalated complexes of Pd(II) and Pd(IV) from iminophosphoranes: Synthesis, structure and reactivity. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.05.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Melen RL. Applications of pentafluorophenyl boron reagents in the synthesis of heterocyclic and aromatic compounds. Chem Commun (Camb) 2014; 50:1161-74. [PMID: 24292326 DOI: 10.1039/c3cc48036d] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Recently, main group reagents have attracted a lot of attention in bond-forming reactions in organic synthesis. This article highlights the use of pentafluorophenyl substituted boron reagents in their reactions with C=C and C≡C π-bonds for the synthesis of heterocyclic and aromatic compounds. These cyclisation reactions fall into four general classes although there is some overlap between classes and often combinations of these different types of reactivity are observed in the formation of the final heterocyclic product: (i) 1,2- (and 1,4-) additions of nucleophile and Lewis-acidic boron centre, (ii) 1,1-carboboration, (iii) carbocation rearrangements and (iv) cycloaddition chemistry. In addition, the prospect of using such boron reagents catalytically in the synthesis of aromatic compounds such as oxazoles and dibenzopentalene derivatives is emphasised.
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Affiliation(s)
- Rebecca L Melen
- Department of Chemistry, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.
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20
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Sun R, Wang H, Hu J, Zhao J, Zhang H. Pyridine-phosphinimine ligand-accelerated Cu(i)-catalyzed azide–alkyne cycloaddition for preparation of 1-(pyridin-2-yl)-1,2,3-triazole derivatives. Org Biomol Chem 2014; 12:5954-63. [DOI: 10.1039/c4ob01176g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Flores JA, Pal K, Carroll ME, Pink M, Karty JA, Mindiola DJ, Caulton KG. Mechanistic Understanding of a Silver Pyridylpyrrolide as a Catalyst for 3 + 2 Cyclization of a Nitrile with Diazo Ester. Organometallics 2014. [DOI: 10.1021/om400756t] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Jaime A. Flores
- Department of Chemistry and Molecular Structure
Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Kuntal Pal
- Department of Chemistry and Molecular Structure
Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Maria E. Carroll
- Department of Chemistry and Molecular Structure
Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Maren Pink
- Department of Chemistry and Molecular Structure
Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Jonathan A. Karty
- Department of Chemistry and Molecular Structure
Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Daniel J. Mindiola
- Department of Chemistry and Molecular Structure
Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Kenneth G. Caulton
- Department of Chemistry and Molecular Structure
Center, Indiana University, Bloomington, Indiana 47405, United States
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22
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Ko HM, Kung KKY, Cui JF, Wong MK. Bis-cyclometallated gold(III) complexes as efficient catalysts for synthesis of propargylamines and alkylated indoles. Chem Commun (Camb) 2014; 49:8869-71. [PMID: 23963337 DOI: 10.1039/c3cc44828b] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Stable bis-cyclometallated gold(III) complexes were developed as efficient catalysts for organic transformation reactions by using two strategies: (1) construction of distorted square planar gold(III) complexes and (2) dual catalysis by gold(III) complexes and silver salts.
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Affiliation(s)
- Hok-Ming Ko
- State Key Laboratory of Chirosciences and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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23
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Frik M, Jiménez J, Vasilevski V, Carreira M, de Almeida A, Gascón E, Benoit F, Sanaú M, Casini A, Contel M. Luminescent iminophosphorane gold, palladium and platinum complexes as potential anticancer agents. Inorg Chem Front 2014; 1:231-241. [PMID: 27660713 PMCID: PMC5029859 DOI: 10.1039/c4qi00003j] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A series of coordination gold(III), palladium(II), and platinum(II) complexes with a luminescent iminophosphorane ligand derived from 8-aminoquinoline [Ph3P=N-C9H6N] (1), have been synthesized and structurally characterized. The coordination palladium(II) and platinum(II) compounds can evolve further, under appropriate conditions, to give stable cyclometalated endo species [M{κ3-C,N,N-C6H4(PPh2=N-8-C9H6N}Cl] (M = Pd, Pt) by C-H activation of the phenyl group of the PPh 3 fragment. Iminophosphorane 1 and the new metallic complexes are luminescent in DMSO or DMSO:H2O (1:1 mixture) solutions at RT. The compounds have been evaluated for their antiproliferative properties in a human ovarian cancer cell line (A2780S), in human lung cancer cells (A-549) and in a non-tumorigenic human embryonic kidney cell line (HEK-293T). Most compounds have been more toxic to the ovarian cancer cell line than to the non-tumorigenic cell line. The new complexes interact with human serum albumin (HSA) faster than cisplatin. Studies of the interactions of the compounds with DNA indicate that, in some cases, they exert anticancer effects in vitro based on different mechanisms of action with respect to cisplatin.
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Affiliation(s)
- Malgorzata Frik
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, 11210, US
| | - Josefina Jiménez
- Departamento de Química Inorgánica, Facultad de Ciencias-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Vadim Vasilevski
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, 11210, US
| | - Monica Carreira
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, 11210, US
| | - Andreia de Almeida
- Dept. of Pharmacokinetics, Toxicology and Targeting, Research Institute of Pharmacy, University of Groningen, 9713 AV Groningen, The Netherlands
| | - Elena Gascón
- Departamento de Química Inorgánica, Facultad de Ciencias-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Farrah Benoit
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, 11210, US
| | - Mercedes Sanaú
- Departamento de Química Inorgánica, Universidad de Valencia, Burjassot, Valencia, 46100, Spain
| | - Angela Casini
- Dept. of Pharmacokinetics, Toxicology and Targeting, Research Institute of Pharmacy, University of Groningen, 9713 AV Groningen, The Netherlands
| | - María Contel
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, 11210, US
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24
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Abstract
The synthesis of substituted dihydrooxazoles by the CuI-catalyzed cycloisomerization of terminal propargyl amides is reported.
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Affiliation(s)
- Ali Alhalib
- Department of Chemical & Biological Sciences
- University of Huddersfield
- Queensgate, UK
| | - Wesley J. Moran
- Department of Chemical & Biological Sciences
- University of Huddersfield
- Queensgate, UK
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25
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26
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Guo P, Huang JH, Huang QC, Qian XH. Synthesis of novel 1,3-oxazole derivatives with insect growth-inhibiting activities. CHINESE CHEM LETT 2013. [DOI: 10.1016/j.cclet.2013.06.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Melen RL, Hansmann MM, Lough AJ, Hashmi ASK, Stephan DW. Cyclisation versus 1,1-Carboboration: Reactions of B(C6F5)3with Propargyl Amides. Chemistry 2013; 19:11928-38. [DOI: 10.1002/chem.201301899] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 11/12/2022]
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28
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Pirovano V, Dell'Acqua M, Facoetti D, Nava D, Rizzato S, Abbiati G, Rossi E. Cycloaddition versus Alkylation Reactions of 2-Vinylindoles with α,β-Unsaturated Carbonyl Compounds Under Gold Catalysis. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300725] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Kung KKY, Lo VKY, Ko HM, Li GL, Chan PY, Leung KC, Zhou Z, Wang MZ, Che CM, Wong MK. Cyclometallated Gold(III) Complexes as Effective Catalysts for Synthesis of Propargylic Amines, Chiral Allenes and Isoxazoles. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300005] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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30
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Lease N, Vasilevski V, Carreira M, de Almeida A, Sanaú M, Hirva P, Casini A, Contel M. Potential anticancer heterometallic Fe-Au and Fe-Pd agents: initial mechanistic insights. J Med Chem 2013; 56:5806-18. [PMID: 23786413 DOI: 10.1021/jm4007615] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of gold(III) and palladium(II) heterometallic complexes with new iminophosphorane ligands derived from ferrocenylphosphanes [{Cp-P(Ph2)═N-Ph}2Fe] (1), [{Cp-P(Ph2)═N-CH2-2-NC5H4}2Fe] (2), and [{Cp-P(Ph2)═N-CH2-2-NC5H4}Fe(Cp)] (3) have been synthesized and structurally characterized. Ligands 2 and 3 afford stable coordination complexes [AuCl2(3)]ClO4, [{AuCl2}2(2)](ClO4)2, [PdCl2(3)], and [{PdCl2}2(2)]. The complexes have been evaluated for their antiproliferative properties in human ovarian cancer cells sensitive and resistant to cisplatin (A2780S/R), in human breast cancer cells (MCF7) and in a nontumorigenic human embryonic kidney cell line (HEK-293T). The highly cytotoxic trimetallic derivatives M2Fe (M = Au, Pd) are more cytotoxic to cancer cells than their corresponding monometallic fragments. Moreover, these complexes were significantly more cytotoxic than cisplatin in the resistant A2780R and the MCF7 cell lines. Studies of the interactions of the trimetallic compounds with DNA and the zinc-finger protein PARP-1 indicate that they exert anticancer effects in vitro based on different mechanisms of actions with respect to cisplatin.
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Affiliation(s)
- Nicholas Lease
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York , Brooklyn, New York 11210, United States
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31
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Reeds JP, Whitwood AC, Healy MP, Fairlamb IJS. Synthesis and Reactivity of N-Heterocyclic Carbene Gold(I) and Gold(III) Imidate Complexes and Their Catalytic Activity in 1,5-Enyne Cycloisomerization. Organometallics 2013. [DOI: 10.1021/om400310z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonathan P. Reeds
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Adrian C. Whitwood
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Mark P. Healy
- GlaxoSmithKline, New Frontiers Science Park, Third Avenue, Harlow, Essex CM19 5AW,
United Kingdom
| | - Ian J. S. Fairlamb
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
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32
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Gulevich AV, Dudnik AS, Chernyak N, Gevorgyan V. Transition metal-mediated synthesis of monocyclic aromatic heterocycles. Chem Rev 2013; 113:3084-213. [PMID: 23305185 PMCID: PMC3650130 DOI: 10.1021/cr300333u] [Citation(s) in RCA: 814] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anton V. Gulevich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Alexander S. Dudnik
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Natalia Chernyak
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
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33
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Reactivity of cationic gold(I) carbene complexes toward oxidative addition of bromine. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.05.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Hashmi ASK, Blanco Jaimes MC, Schuster AM, Rominger F. From Propargylic Amides to Functionalized Oxazoles: Domino Gold Catalysis/Oxidation by Dioxygen. J Org Chem 2012; 77:6394-408. [DOI: 10.1021/jo301288w] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Stephen K. Hashmi
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
| | - Maria Camila Blanco Jaimes
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
| | - Andreas M. Schuster
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
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35
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Cytotoxic hydrophilic iminophosphorane coordination compounds of d⁸ metals. Studies of their interactions with DNA and HSA. J Inorg Biochem 2012; 116:204-14. [PMID: 23063789 DOI: 10.1016/j.jinorgbio.2012.06.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/29/2012] [Accepted: 06/30/2012] [Indexed: 01/05/2023]
Abstract
The synthesis and characterization of a new water-soluble N,N-chelating iminophosphorane ligand TPAN-C(O)-2-NC(5)H(4) (N,N-IM) (1) and its d(8) (Au(III), Pd(II) and Pt(II)) coordination complexes are reported. The structures of cationic [AuCl(2)(N,N-IM)]ClO(4) (2) and neutral [MCl(2)(N,N-IM)] M=Pd (3), Pt(4) complexes were determined by X-ray diffraction studies or by means of density-functional calculations. While the Pd and Pt compounds are stable in mixtures of DMSO/H(2)O over 4 days, the gold derivative (2) decomposes quickly to TPAO and previously reported neutral gold(III) compound [AuCl(2)(N,N-H)] 5 (containing the chelating N,N-fragment HN-C(O)-2-NC(5)H(4)). The cytotoxicities of complexes 2-5 were evaluated in vitro against human Jurkat-T acute lymphoblastic leukemia cells and DU-145 human prostate cancer cells. Pt (4) and Au compounds (2 and 5) are more cytotoxic than cisplatin to these cell lines and to cisplatin-resistant Jurkat sh-Bak cell lines and their cell death mechanism is different from that of cisplatin. All the compounds show higher toxicity against leukemia cells when compared to normal human T-lymphocytes (PBMC). The interaction of the Pd and Pt compounds with calf thymus and plasmid (pBR322) DNA is different from that of cisplatin. All compounds bind to human serum albumin (HSA) faster than cisplatin (measured by fluorescence spectroscopy). Weak and stronger binding interactions were found for the Pd (3) and Pt (4) derivatives by isothermal titration calorimetry. Importantly, for the Pt (4) compounds the binding to HSA was reversed by addition of a chelating agent (citric acid) and by a decrease in pH.
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36
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Gold(III) Compounds for Homogeneous Catalysis: Preparation, Reaction Conditions, and Scope of Application. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2012. [DOI: 10.1007/s13369-012-0313-3] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Hashmi ASK, Littmann A. Gold Catalysis: One-Pot Alkylideneoxazoline Synthesis/Alder-Ene Reaction. Chem Asian J 2012; 7:1435-42. [DOI: 10.1002/asia.201200046] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 02/18/2012] [Indexed: 11/09/2022]
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38
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39
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Grande L, Serrano E, Cuesta L, Urriolabeitia EP. Regioselective CH Bond Activation on Stabilized Nitrogen Ylides Promoted by Pd(II) Complexes: Scope and Limitations. Organometallics 2011. [DOI: 10.1021/om201001c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Loreto Grande
- Instituto
de Síntesis Química y Catálisis
Homogénea, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Elena Serrano
- Instituto
de Síntesis Química y Catálisis
Homogénea, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Luciano Cuesta
- Instituto
de Síntesis Química y Catálisis
Homogénea, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Esteban P. Urriolabeitia
- Instituto
de Síntesis Química y Catálisis
Homogénea, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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40
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Kilpin KJ, Jarman BP, Henderson W, Nicholson BK. Catalytic activity of cycloaurated complexes in the addition of 2-methylfuran to methyl vinyl ketone. Appl Organomet Chem 2011. [DOI: 10.1002/aoc.1842] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Corma A, Leyva-Pérez A, Sabater MJ. Gold-catalyzed carbon-heteroatom bond-forming reactions. Chem Rev 2011; 111:1657-712. [PMID: 21391565 DOI: 10.1021/cr100414u] [Citation(s) in RCA: 1111] [Impact Index Per Article: 85.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- A Corma
- Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, Avenida Los Naranjos s/n, 46022, Valencia, Spain.
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42
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Venugopal A, Shaw AP, Törnroos KW, Heyn RH, Tilset M. Synthesis of a Coordinatively Labile Gold(III) Methyl Complex. Organometallics 2011. [DOI: 10.1021/om200327a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Hashmi ASK, Schuster AM, Schmuck M, Rominger F. Gold-Catalyzed Cyclization of Nonterminal Propargylic Amides to Substituted Alkylideneoxazolines and -oxazines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100342] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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44
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Samantaray MK, Dash C, Shaikh MM, Pang K, Butcher RJ, Ghosh P. Gold(III) N-Heterocyclic Carbene Complexes Mediated Synthesis of β-Enaminones From 1,3-Dicarbonyl Compounds and Aliphatic Amines. Inorg Chem 2011; 50:1840-8. [DOI: 10.1021/ic102268n] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Keliang Pang
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Ray J. Butcher
- Department of Chemistry, Howard University,Washington, DC, 20059, United States
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45
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Aguilar D, Bielsa R, Soler T, Urriolabeitia EP. Cycloruthenated Complexes from Iminophosphoranes: Synthesis, Structure, and Reactivity with Internal Alkynes. Organometallics 2011. [DOI: 10.1021/om100997x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David Aguilar
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, 50009, Zaragoza, Spain
| | - Raquel Bielsa
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, 50009, Zaragoza, Spain
| | - Tatiana Soler
- Servicios Técnicos de Investigación, Facultad de Ciencias Fase II, 03690, San Vicente de Raspeig, Alicante, Spain
| | - Esteban P. Urriolabeitia
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, 50009, Zaragoza, Spain
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46
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Pews-Davtyan A, Beller M. A novel Zn-catalyzed hydroamination of propargylamides: a general synthesis of di- and tri-substituted imidazoles. Chem Commun (Camb) 2011; 47:2152-4. [DOI: 10.1039/c0cc04625f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Bandini M. Gold-catalyzed decorations of arenes and heteroarenes with C–C multiple bonds. Chem Soc Rev 2011; 40:1358-67. [PMID: 21103507 DOI: 10.1039/c0cs00041h] [Citation(s) in RCA: 379] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Marco Bandini
- Dipartimento di Chimica G. Ciamician, Alma Mater Studiorum-Università di Bologna, via Selmi 2, 40126 Bologna, Italy.
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48
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Affiliation(s)
- Tanya C Boorman
- Queen Mary University of London, School of Biological and Chemical Sciences, London, UK
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49
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Aguilar D, Navarro R, Soler T, Urriolabeitia EP. Regioselective functionalization of iminophosphoranes through Pd-mediated C-H bond activation: C-C and C-X bond formation. Dalton Trans 2010; 39:10422-31. [PMID: 20927428 DOI: 10.1039/c003241g] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The orthopalladation of iminophosphoranes [R(3)P=N-C(10)H(7)-1] (R(3) = Ph(3) 1, p-Tol(3) 2, PhMe(2) 3, Ph(2)Me 4, N-C(10)H(7)-1 = 1-naphthyl) has been studied. It occurs regioselectively at the aryl ring bonded to the P atom in 1 and 2, giving endo-[Pd(μ-Cl)(C(6)H(4)-(PPh(2=N-1-C(10)H(7))-2)-κ-C,N](2) (5) or endo-[Pd(μ-Cl)(C(6)H(3)-(P(p-Tol)(2)=N-C(10)H(7)-1)-2-Me-5)-κ-C,N](2) (6), while in 3 the 1-naphthyl group is metallated instead, giving exo-[Pd(μ-Cl)(C(10)H(6)-(N=PPhMe(2))-8)-κ-C,N](2) (7). In the case of 4, orthopalladation at room temperature affords the kinetic exo isomer [Pd(μ-Cl)(C(10)H(6)-(N=PPh(2)Me)-8)-κ-C,N](2) (11exo), while a mixture of 11exo and the thermodynamic endo isomer [Pd(μ-Cl)(C(6)H(4)-(PPhMe=N-C(10)H(7)-1)-2)-κ-C,N](2) (11endo) is obtained in refluxing toluene. The heating in toluene of the acetate bridge dimer [Pd(μ-OAc)(C(10)H(6)-(N=PPh(2)Me)-8)-κ-C,N](2) (13exo) promotes the facile transformation of the exo isomer into the endo isomer [Pd(μ-OAc)(C(6)H(4)-(PPhMe=N-C(10)H(7)-1)-2)-κ-C,N](2) (13endo), confirming that the exo isomers are formed under kinetic control. Reactions of the orthometallated complexes have led to functionalized molecules. The stoichiometric reactions of the orthometallated complexes [Pd(μ-Cl)(C(10)H(6)-(N=PPhMe(2))-8)-κ-C,N](2) (7), [Pd(μ-Cl)(C(6)H(4)-(PPh(2)[=NPh)-2)](2) (17) and [Pd(μ-Cl)(C(6)H(3)-(C(O)N=PPh(3))-2-OMe-4)](2) (18) with I(2) or with CO results in the synthesis of the ortho-halogenated compounds [PhMe(2)P=N-C(10)H(6)-I-8] (19), [I-C(6)H(4)-(PPh(2)=NPh)-2] (21) and [Ph(3)P=NC(O)C(6)H(3)-I-2-OMe-5] (23) or the heterocycles [C(10)H(6)-(N=PPhMe(2))-1-(C(O))-8]Cl (20), [C(6)H(5)-(N=PPh(2)-C(6)H(4)-C(O)-2]ClO(4) (22) and [C(6)H(3)-(C(O)-1,2-N-PPh(3))-OMe-4]Cl (24).
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Affiliation(s)
- David Aguilar
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
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50
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Aguilar D, Fernández I, Cuesta L, Yañez-Rodríguez V, Soler T, Navarro R, Urriolabeitia EP, López Ortiz F. Synthesis, Structure, and Reactivity of N-Benzoyl Iminophosphoranes Ortho Lithiated at the Benzoyl Group. J Org Chem 2010; 75:6452-62. [DOI: 10.1021/jo101151s] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Aguilar
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC−Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ignacio Fernández
- Área de Química Orgánica, Universidad de Almería, Crta. Sacramento s/n, 04120, Almería, Spain
| | - Luciano Cuesta
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC−Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Víctor Yañez-Rodríguez
- Área de Química Orgánica, Universidad de Almería, Crta. Sacramento s/n, 04120, Almería, Spain
| | - Tatiana Soler
- Servicios Técnicos de Investigación, Facultad de Ciencias Fase II, 03690, San Vicente de Raspeig, Alicante, Spain
| | - Rafael Navarro
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC−Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Esteban P. Urriolabeitia
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, CSIC−Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Fernando López Ortiz
- Área de Química Orgánica, Universidad de Almería, Crta. Sacramento s/n, 04120, Almería, Spain
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