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Delville MH. Organometallic electron reservoir sandwich iron complexes as potential agents for redox and electron transfer chain catalysis. Inorganica Chim Acta 1999. [DOI: 10.1016/s0020-1693(99)00042-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kang YK, Shin KS, Lee SG, Lee IS, Chung YK. Synthesis of Fulvalene-Bridged Bimetallic Compounds Containing a Substituted Cyclopentadienyl Group Based on Pauson−Khand Chemistry. Organometallics 1998. [DOI: 10.1021/om980693g] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Youn Kyung Kang
- Department of Chemistry and the Center for Molecular Catalysis, College of Natural Sciences, Seoul National University, Seoul 151-742, Korea
| | - Ki Seog Shin
- Department of Chemistry and the Center for Molecular Catalysis, College of Natural Sciences, Seoul National University, Seoul 151-742, Korea
| | - Song-Gil Lee
- Department of Chemistry and the Center for Molecular Catalysis, College of Natural Sciences, Seoul National University, Seoul 151-742, Korea
| | - In Su Lee
- Department of Chemistry and the Center for Molecular Catalysis, College of Natural Sciences, Seoul National University, Seoul 151-742, Korea
| | - Young Keun Chung
- Department of Chemistry and the Center for Molecular Catalysis, College of Natural Sciences, Seoul National University, Seoul 151-742, Korea
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Ruiz J, Ogliaro F, Saillard JY, Halet JF, Varret F, Astruc D. First 17−18−19-Electron Triads of Stable Isostructural Organometallic Complexes. The 17-Electron Complexes [Fe(C5R5)(arene)]2+ (R = H or Me), a Novel Family of Strong Oxidants: Isolation, Characterization, Electronic Structure, and Redox Properties. J Am Chem Soc 1998. [DOI: 10.1021/ja982342z] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jaime Ruiz
- Contribution from the Groupe de Chimie Supramoléculaire des Métaux de Transition, LCOO, UMR CNRS No. 5802, Université Bordeaux I, 33405 Talence Cedex, France, Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR CNRS No. 6511, Université de Rennes 1, 35042 Rennes Cedex, France, and Laboratoire de Magnétisme et d'Optique, URA CNRS No. 1531, Université de Versailles, 78035 Versailles Cedex, France
| | - François Ogliaro
- Contribution from the Groupe de Chimie Supramoléculaire des Métaux de Transition, LCOO, UMR CNRS No. 5802, Université Bordeaux I, 33405 Talence Cedex, France, Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR CNRS No. 6511, Université de Rennes 1, 35042 Rennes Cedex, France, and Laboratoire de Magnétisme et d'Optique, URA CNRS No. 1531, Université de Versailles, 78035 Versailles Cedex, France
| | - Jean-Yves Saillard
- Contribution from the Groupe de Chimie Supramoléculaire des Métaux de Transition, LCOO, UMR CNRS No. 5802, Université Bordeaux I, 33405 Talence Cedex, France, Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR CNRS No. 6511, Université de Rennes 1, 35042 Rennes Cedex, France, and Laboratoire de Magnétisme et d'Optique, URA CNRS No. 1531, Université de Versailles, 78035 Versailles Cedex, France
| | - Jean-François Halet
- Contribution from the Groupe de Chimie Supramoléculaire des Métaux de Transition, LCOO, UMR CNRS No. 5802, Université Bordeaux I, 33405 Talence Cedex, France, Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR CNRS No. 6511, Université de Rennes 1, 35042 Rennes Cedex, France, and Laboratoire de Magnétisme et d'Optique, URA CNRS No. 1531, Université de Versailles, 78035 Versailles Cedex, France
| | - François Varret
- Contribution from the Groupe de Chimie Supramoléculaire des Métaux de Transition, LCOO, UMR CNRS No. 5802, Université Bordeaux I, 33405 Talence Cedex, France, Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR CNRS No. 6511, Université de Rennes 1, 35042 Rennes Cedex, France, and Laboratoire de Magnétisme et d'Optique, URA CNRS No. 1531, Université de Versailles, 78035 Versailles Cedex, France
| | - Didier Astruc
- Contribution from the Groupe de Chimie Supramoléculaire des Métaux de Transition, LCOO, UMR CNRS No. 5802, Université Bordeaux I, 33405 Talence Cedex, France, Laboratoire de Chimie du Solide et Inorganique Moléculaire, UMR CNRS No. 6511, Université de Rennes 1, 35042 Rennes Cedex, France, and Laboratoire de Magnétisme et d'Optique, URA CNRS No. 1531, Université de Versailles, 78035 Versailles Cedex, France
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Xidos JD, Poirier RA, Pye CC, Burnell DJ. An ab Initio Study of Facial Selectivity in the Diels-Alder Reaction. J Org Chem 1998; 63:105-112. [PMID: 11674049 DOI: 10.1021/jo9712815] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Facial selectivities in the Diels-Alder reactions of 5-substituted 1,3-cyclopentadienes with a variety of dienophiles are predicted reliably at the ab initio HF/6-31G level. The ranges of activation energies for syn addition are large relative to those for anti addition, which are all similar to the activation energy for cyclopentadiene itself. Partitioning the activation energy into diene deformation, dienophile deformation, and diene-dienophile interaction energies shows that the major factor in determining facial selectivity is in the energy required to deform the diene into its transition state geometry. Deformation of the 5-fluoro-, 5-hydroxy-, and 5-amino-1,3-cyclopentadienes into their syn transition state geometries is predicted to require less energy than deformation of cyclopentadiene itself, which is in accord with experimental observation of syn addition with these dienes. The first definition of an ab initio steric factor is presented which correlates very well with syn activation energies. This indicates that facial selectivity with these dienes is primarily due to steric hindrance between the dienophile and the plane-nonsymmetric groups on the diene. However, we have also identified a significant lone pair-lone pair interaction with the reacting nitrogens when the dienophile is 1,2,4-triazoline-3,5-dione.
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Affiliation(s)
- James D. Xidos
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1B 3X7
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Letourneau JE, Wellman MA, Burnell DJ. Diels-Alder Reactions of 5-Alkyl-1,3-cyclopentadienes. J Org Chem 1997; 62:7272-7277. [PMID: 11671840 DOI: 10.1021/jo9707949] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Facial selectivity in the Diels-Alder reactions of 1,3-cyclopentadienes substituted at C-5 by a variety of simple alkyl groups has been assessed with a number of dienophiles. The results are consistent with an explanation based on steric hindrance. Syn addition is more favored with sterically less demanding dienophiles. Diene 6, which is substituted at C-5 with methoxymethyl, shows a remarkable preference for syn addition with less encumbered dienophiles. This may indicate a conformational difference in its syn transition state relative to the transition states for addition syn to methyl, ethyl, or n-butyl substituents (dienes 1, 4, and 5). Dienophiles are more reluctant to add syn to the larger C-5 group with 1,2,3,4,5-pentamethyl-1,3-cyclopentadiene (2) and derivatives (3, and 7) and conformational effects become very important when C-5 bears two alkyl groups, as in dienes 3 and 7.
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Affiliation(s)
- Johnathon E. Letourneau
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X7, Canada
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57
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Lacoste M, Delville-Desbois MH, Ardoin N, Astruc D. Fulvalenyl Mono- and Diiron Complexes: Photolytic and Electron-Transfer-Induced Substitution of the Benzene Ligands by Phosphines and CO in the Diiron Fulvalenyl Dibenzene Complexes [Fe2Fv(C6H6)2]2+/0. Generation of the Average-Valence Species [Fe2FvL6]3+(L = Phosphine)†. Organometallics 1997. [DOI: 10.1021/om961060+] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Adam W, Prein M. π-Facial Diastereoselectivity in the [4+2] Cycloaddition of Singlet Oxygen as a Mechanistic Probe. Acc Chem Res 1996. [DOI: 10.1021/ar950164y] [Citation(s) in RCA: 119] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Waldemar Adam
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Michael Prein
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
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59
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Brown DS, Delville MH, Vollhardt KPC, Astruc D. Use of the Electron-Reservoir [FeICp(arene)] Sandwiches as Efficient and Selective Electrocatalysts: Syntheses of Homo- and Heterodinuclear Zwitterionic Transition-Metal Fulvalene Complexes. Organometallics 1996. [DOI: 10.1021/om960003d] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David S. Brown
- Department of Chemistry, University of California, and Chemical Science Division, Lawrence Berkeley Laboratory, Berkeley, California 94720, and Laboratoire de Chimie Organique et Organométallique, URA CNRS No. 35, Université Bordeaux I, 351, Cours de la Libération, 33405 Talence Cédex, France
| | - Marie-Hélène Delville
- Department of Chemistry, University of California, and Chemical Science Division, Lawrence Berkeley Laboratory, Berkeley, California 94720, and Laboratoire de Chimie Organique et Organométallique, URA CNRS No. 35, Université Bordeaux I, 351, Cours de la Libération, 33405 Talence Cédex, France
| | - K. Peter C. Vollhardt
- Department of Chemistry, University of California, and Chemical Science Division, Lawrence Berkeley Laboratory, Berkeley, California 94720, and Laboratoire de Chimie Organique et Organométallique, URA CNRS No. 35, Université Bordeaux I, 351, Cours de la Libération, 33405 Talence Cédex, France
| | - Didier Astruc
- Department of Chemistry, University of California, and Chemical Science Division, Lawrence Berkeley Laboratory, Berkeley, California 94720, and Laboratoire de Chimie Organique et Organométallique, URA CNRS No. 35, Université Bordeaux I, 351, Cours de la Libération, 33405 Talence Cédex, France
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Begley MJ, Mountford P, Stewart PJ, Swallow D, Wan S. Synthesis, structure and properties of new iron–molybdenum and –tungsten fulvalene-bridged heterobimetallic complexes. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/dt9960001323] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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New FeMo and FeW fulvalene-bridge heterobimetallic complexes containing the ferrocenyl unit. Crystal structure of [(η-C5H5)Fe(μ-η:η-C5H4Ind)Mo(CO)2(η-C3H5)] (Ind 1-indenyl). J Organomet Chem 1995. [DOI: 10.1016/0022-328x(94)05155-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Astruc D, Ruiz J, Lacoste M, Gloaguen B, Ardoin N, Linarès J, Varret F. Electronic communication and switching between two iron atoms across the phenanthrene–dihydrophenanthrene bridging ligands. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/c39950001565] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Beck W, Niemer B, Wieser M. Methoden zur Synthese von (μ-Kohlenwasserstoff)-Übergangsmetallkomplexen ohne Metall-Metall-Bindung. Angew Chem Int Ed Engl 1993. [DOI: 10.1002/ange.19931050704] [Citation(s) in RCA: 87] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Beck W, Niemer B, Wieser M. Methods for the Synthesis of ?-Hydrocarbon Transition Metal Complexes without Metal-Metal Bonds. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/anie.199309233] [Citation(s) in RCA: 250] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Boese R, Myrabo RL, Newman DA, Vollhardt KPC. Auf dem Weg zu Oligocyclopentadienyl-Liganden: Synthese und erste Reaktionen der beiden isomeren Tercyclopentadienyle und ihrer Übergangsmetallkomplexe. Angew Chem Int Ed Engl 1990. [DOI: 10.1002/ange.19901020535] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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