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Zhang ZH, He P, Kang SR, Liu C, Yi XY. Reversible pyrrole-based proton storage/release in ruthenium(ii) complexes. Chem Commun (Camb) 2019; 55:14594-14597. [PMID: 31742267 DOI: 10.1039/c9cc08288c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Newly designed ruthenium(ii) complexes are reported which contain a pyridylpyrrole ligand featuring fast-responsive and reversible proton storage/release on the pyrrole group. The protonated pyrrolium acts as an acidic initiator and is capable of triggering the polymerization of 2,2-dimethyloxirane.
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Affiliation(s)
- Zheng-Hao Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
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Das D, Roy S. Palladium(II)-Catalyzed Efficient C-3 Functionalization of Indoles with Benzylic and Allylic Alcohols under Co-Catalyst, Acid, Base, Additive and External Ligand-Free Conditions. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300048] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lubriks D, Sokolovs I, Suna E. Indirect C–H Azidation of Heterocycles via Copper-Catalyzed Regioselective Fragmentation of Unsymmetrical λ3-Iodanes. J Am Chem Soc 2012; 134:15436-42. [DOI: 10.1021/ja305574k] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Dmitrijs Lubriks
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Igors Sokolovs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
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Myers WH, Welch KD, Graham PM, Keller A, Sabat M, Trindle CO, Harman WD. Tungsten(0) and Rhenium(I) η2-Pyrrole Complexes: Dearomatization of Pyrroles and Their Facile Isomerizations, Protonations, and Reductions. Organometallics 2005. [DOI: 10.1021/om050393g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- William H. Myers
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, and Department of Chemistry, University of Richmond, Richmond, Virginia 23173
| | - Kevin D. Welch
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, and Department of Chemistry, University of Richmond, Richmond, Virginia 23173
| | - Peter M. Graham
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, and Department of Chemistry, University of Richmond, Richmond, Virginia 23173
| | - Andrew Keller
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, and Department of Chemistry, University of Richmond, Richmond, Virginia 23173
| | - Michal Sabat
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, and Department of Chemistry, University of Richmond, Richmond, Virginia 23173
| | - Carl O. Trindle
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, and Department of Chemistry, University of Richmond, Richmond, Virginia 23173
| | - W. Dean Harman
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, and Department of Chemistry, University of Richmond, Richmond, Virginia 23173
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Abdallah WA, Nelson AE. Density Functional Theory Study of Pyrrole Adsorption on Mo(110). J Phys Chem B 2005; 109:10863-70. [PMID: 16852322 DOI: 10.1021/jp050565n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The objective of the present study is to identify possible adsorption configurations of pyrrole on Mo(110) using density functional theory (DFT) calculations. Several adsorption configurations were studied including pyrrole and pyrrolyl adsorption as parallel, perpendicular, and tilted adsorption modes relative to the Mo(110) surface plane. Based on the DFT calculations, pyrrole is suggested to adsorb in a parallel mode with respect to the Mo(110) surface through its pi-orbital as mu3,eta(5)-Pyr-0 degrees with an adsorption energy of -28.7 to -31.5 kcal mol(-1). The possibility of a coexisting mode where pyrrole adsorbs on the surface with a slightly tilted molecular plane as mu3,eta(4)(N,C2,C3,C4)-Pyr-5 degrees is also likely to occur, particularly at higher pyrrole coverages. The slightly tilted configuration is suggested to arise from the lateral interactions of adsorbed pyrrole on Mo(110), and not the result of a phase transformation on the surface since this requires a relatively high activation energy as indicated by additional linear synchronous transit (LST)/quadratic synchronous transit (QST) calculations. Both adsorption geometries bond to three surface Mo atoms, and Mo(110) did not promote hydrogen abstraction. Pyrrolyl adsorption on Mo(110) is energetically possible, but unlikely to occur because gas-phase hydrogen has not been previously experimentally observed as a pyrrole decomposition product on Mo(110).
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Affiliation(s)
- Wa'el A Abdallah
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2G6 Canada
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Matchett SA, Schmiege-Boyle BR, Cooper J, Fratterelli D, Olson K, Roberts J, Thommen J, Tigelaar D, Winkler F. Electronic Control of the Asymmetry in Heteroatom Monosubstituted Olefin Bonding to the Cyclopentadienyl Iron(II) Dicarbonyl Cation. A Hammett Correlation Study. Organometallics 2003. [DOI: 10.1021/om0305566] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen A. Matchett
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | | | - John Cooper
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - David Fratterelli
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - Kirk Olson
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - Justin Roberts
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - James Thommen
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - Dean Tigelaar
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - Frederique Winkler
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
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Borowski AF, Sabo-Etienne S, Donnadieu B, Chaudret B. Reactivity of the Bis(dihydrogen) Complex [RuH2(η2-H2)2(PCy3)2] toward N-Heteroaromatic Compounds. Regioselective Hydrogenation of Acridine to 1,2,3,4,5,6,7,8-Octahydroacridine. Organometallics 2003. [DOI: 10.1021/om020995p] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrzej F. Borowski
- Institute of Coal Chemistry, Polish Academy of Sciences, 5, Sowinskiego Street, 44-121 Gliwice, Poland, and Laboratoire de Chimie de Coordination du CNRS, Université Paul Sabatier, 205 Route de Narbonne, 31 077 Toulouse Cedex 04, France
| | - Sylviane Sabo-Etienne
- Institute of Coal Chemistry, Polish Academy of Sciences, 5, Sowinskiego Street, 44-121 Gliwice, Poland, and Laboratoire de Chimie de Coordination du CNRS, Université Paul Sabatier, 205 Route de Narbonne, 31 077 Toulouse Cedex 04, France
| | - Bruno Donnadieu
- Institute of Coal Chemistry, Polish Academy of Sciences, 5, Sowinskiego Street, 44-121 Gliwice, Poland, and Laboratoire de Chimie de Coordination du CNRS, Université Paul Sabatier, 205 Route de Narbonne, 31 077 Toulouse Cedex 04, France
| | - Bruno Chaudret
- Institute of Coal Chemistry, Polish Academy of Sciences, 5, Sowinskiego Street, 44-121 Gliwice, Poland, and Laboratoire de Chimie de Coordination du CNRS, Université Paul Sabatier, 205 Route de Narbonne, 31 077 Toulouse Cedex 04, France
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Kaminskaia NV, Kostic NM. New selectivity in peptide hydrolysis by metal complexes. Platinum(II) complexes promote cleavage of peptides next to the tryptophan residue. Inorg Chem 2001; 40:2368-77. [PMID: 11327915 DOI: 10.1021/ic0014033] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tryptophan-containing N-acetylated peptides AcTrp-Gly, AcTrp-Ala, AcTrp-Val, and AcTrp-ValOMe bind to platinum(II) and undergo selective hydrolytic cleavage of the C-terminal amide bond; the N-terminal amide bond remains intact. In acetone solution, bidentate coordination of the tryptophanyl residue via the C(3) atom of indole and the amide oxygen atom produces complexes of spiro stereochemistry, which are characterized by (1)H, (13)C, and (195)Pt NMR spectroscopy, and also by UV-vis, IR, and mass spectroscopy. Upon addition of 1 molar equiv of water, these complexes undergo hydrolytic cleavage. This reaction is as much as 10(4)-10(5) times faster in the presence of platinum(II) complexes than in their absence. The hydrolysis is conveniently monitored by (1)H NMR spectroscopy. We report the kinetics and mechanism for this reaction between cis-[Pt(en)(sol)(2)](2+), in which the solvent ligand is water or acetone, and AcTrp-Ala. The platinum(II) ion as a Lewis acid activates the oxygen-bound amide group toward nucleophilic attack of solvent water. The reaction is unimolecular with respect to the metal-peptide complex. Because the tryptophanyl fragment AcTrp remains coordinated to platinum(II) after cleavage of the amide bond, the cleavage is not catalytic. Added ligand, such as DMSO and pyridine, displaces AcTrp from the platinum(II) complex and regenerates the promoter. This is the first report of cleavage of peptide bonds next to tryptophanyl residues by metal complexes and one of the very few reports of organometallic complexes involving metal ions and peptide ligands. Because these complexes form in nonaqueous solvents, a prospect for cleavage of membrane-bound and other hydrophobic proteins with new regioselectivity has emerged.
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Affiliation(s)
- N V Kaminskaia
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA
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Organometallic Compounds of Pyrrole, Indole, Carbazole, Phospholes, Siloles, and Boroles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2001. [DOI: 10.1016/s0065-2725(01)79023-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Kaminskaia NV, Ullmann GM, Fulton DB, Kostic NM. Spectroscopic, kinetic, and mechanistic study of a new mode of coordination of indole derivatives to platinum(II) and palladium(II) ions in complexes. Inorg Chem 2000; 39:5004-13. [PMID: 11233196 DOI: 10.1021/ic000254l] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Binding of tryptophan residue to intrinsic metal ions in proteins is unknown, and very little is known about the coordinating abilities of indole. Indole-3-acetamide displaces the solvent ligands from cis-[Pt(en)(sol)2]2+, in which sol is acetone or H2O, in acetone solution and forms the complex cis-[Pt(en)(indole-3-acetamide)]2+ (3) of spiro structure, in which the new bidentate ligand coordinates to the Pt(II) atom via the C(3) atom of the indolyl group and the amide oxygen atom. This structure is supported by 1H, 13C, 15N, and 195Pt NMR spectra and by UV, IR, and mass spectra. Molecular mechanical simulations by Hyperchem and CHARMM methods give consistent structural models; the latter is optimized by density-functional quantum chemical calculations. Dipeptide-like molecules N-(3-indolylacetyl)-L-amino acid in which amino acid is alanine, leucine, isoleucine, valine, aspartic acid, or phenylalanine also displace the solvent ligands in acetone solution and form complexes cis-[Pt(en) N-(3-indolylacetyl)-L-amino acid)]2+ (6), which structurally resemble 3 but exist as two diastereomers, detected by 1H NMR spectroscopy. The bulkier the amino acid moiety, the slower the coordination of these dipeptide-like ligands to the Pt(II) atom. The indolyl group does not coordinate as a unidentate ligand; a second donor atom is necessary for bidentate coordination of this atom and the indolyl C(3) atom. The solvent-displacement reaction is of first and zeroth orders with respect to indole-3-acetamide and cis-[Pt(en)(sol)2]2+, respectively. A mechanism consisting of initial unidentate coordination of the ligand via the amide oxygen atom followed by closing of the spiro ring is supported by 1H NMR data, the kinetic effects of acid and water, and the activation parameters for the displacement reaction. In the case of N-(3-indolylacetyl)-L-phenylalanine, the bulkiest of the entering ligands, the reaction is of first order with respect to both reactants. The bidentate indole-3-acetamide ligand in 3 is readily displaced by (CH3)2SO and 2-methylimidazole, but not by CNO-, CH3COO-, and CH3CN. Complexes cis-[Pd(en)(sol)2]2+ and cis-[Pd(dtco)(sol)2]2+ react with indole-3-acetamide more rapidly than their Pt(II) analogues do and yield complexes similar to 3. This study augments our recent discovery of selective, hydrolytic cleavage of tryptophan-containing peptides by Pd(II) and Pt(II) complexes.
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Affiliation(s)
- N V Kaminskaia
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge 02139, USA
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Brooks BC, Brent Gunnoe T, Dean Harman W. Dihapto binding of aromatic molecules by π-basic transition metal complexes: development of alternatives to the {Os(NH3)5}2+ fragment. Coord Chem Rev 2000. [DOI: 10.1016/s0010-8545(99)00249-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Friedrichsen W, Traulsen T, Elguero J, Katritzky AR. Tautomerism of Heterocycles: Five-Membered Rings with One Heteroatom. ADVANCES IN HETEROCYCLIC CHEMISTRY 2000. [DOI: 10.1016/s0065-2725(00)76004-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Rakowski DuBois M, Vasquez LD, Peslherbe L, Noll BC. Regioselective Electrophilic Substitution and Addition Reactions at an N-Coordinated Pyrrolyl Ligand in (PMe2Ph)3Cl2Re(NC4H4). Organometallics 1999. [DOI: 10.1021/om9900216] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Rakowski DuBois
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - Lisa D. Vasquez
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - L. Peslherbe
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - B. C. Noll
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
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Garnovskii AD, Sadimenko AP, Sadimenko MI, Garnovskii DA. Common and less-common coordination modes of the typical chelating and heteroaromatic ligands. Coord Chem Rev 1998. [DOI: 10.1016/s0010-8545(98)00084-8] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Affiliation(s)
- W. Dean Harman
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
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Rakowski DuBois M, Parker KG, Ohman C, Noll BC. Nucleophilic Substitution of η5-Pyrrolyl Ligands in Ruthenium(II) Complexes. Organometallics 1997. [DOI: 10.1021/om9700268] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shi C, Anson FC. Cobalt meso-Tetrakis(N-methyl-4-pyridiniumyl)porphyrin Becomes a Catalyst for the Electroreduction of O2 by Four Electrons When [(NH3)5Os]n+ (n = 2, 3) Groups Are Coordinated to the Porphyrin Ring. Inorg Chem 1996. [DOI: 10.1021/ic9607189] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chunnian Shi
- Arthur Amos Noyes Laboratories, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125
| | - Fred C. Anson
- Arthur Amos Noyes Laboratories, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125
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Butters C, Carr N, Deeth RJ, Green M, Green SM, Mahon MF. Synthesis and reactivity of η3-γ-lactonyl complexes of molybdenum; crystal structures of [Mo{η3-OC(O)CHCHCH}(CO)2(η-C5Me5)], [Mo{η-2PhCH2NHCHCHCH(CO2H)}(CO)2(η5-C9H7)] and [Mo{η3-OC(O)CHCHCHCO}(NCMe)(CO)(η-C5H5)]. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/dt9960002299] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Richmond MG. Annual survey of ruthenium and osmium for the year 1991. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)88092-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Shepherd RE, Zhang S. Five coordination modes of 4-aminopyrimidine with N-hydroxy-ethylethylenediaminetriacetatoruthenate(II). TRANSIT METAL CHEM 1994. [DOI: 10.1007/bf00161876] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Reactions of Coordinated Ligands. ADVANCES IN HETEROCYCLIC CHEMISTRY 1993. [DOI: 10.1016/s0065-2725(08)60285-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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