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Hilche T, Krebs T, Weißbarth H, Lang F, Schnakenburg G, Gansäuer A. Enantio- and Diastereomerically Pure Titanocenes by Dynamic Conformational Locking. Chemistry 2023; 29:e202301645. [PMID: 37283199 DOI: 10.1002/chem.202301645] [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: 06/01/2023] [Revised: 06/05/2023] [Accepted: 06/05/2023] [Indexed: 06/08/2023]
Abstract
The synthesis of enantiomerically pure titanocenes is limited to cases with enantiomerically pure substituents at the cyclopentadienyl ligands and to ansa-titanocenes. For the latter complexes, the use of achiral ligands requires a resolution of enantiomers and frequently also a separation of the diastereoisomers obtained after metalation. Here, we introduce a new synthetic method that relies on the use of enantiomerically pure camphorsulfonate (CSA) ligands as control elements for the absolute and relative configuration of titanocene complexes. Starting from the conformationally flexible (RC5 H4 )2 TiCl2 , the desired conformationally locked and hence enantio- and diastereomerically pure complexes (RC5 H4 )2 Ti(CSA)2 are obtained in just two steps. According to X-ray crystallography the (RC5 H4 )2 Ti fragment is essentially C2 -symmetric and nuclear magnetic resonance displays overall C2 -symmetry. We applied density functional theory methods to unravel the dynamics of the complexes and the mechanisms and selectivities of their formation.
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Affiliation(s)
- Tobias Hilche
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Tim Krebs
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Hendrik Weißbarth
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Fabian Lang
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Gregor Schnakenburg
- Institut für Anorganische Chemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
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2
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Chu YY, Lolinco A, Eedugurala N, Ellern A, Windus TL, Sadow AD. Reversible Ligand Protonation in Noninnocent Constrained-Geometry-Like Group 4 Complexes. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang-Yun Chu
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
- Ames Laboratory, 2416 Pammel Drive, Spedding Hall Dock, Ames, Iowa 50011, United States
| | - Annabelle Lolinco
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
- Ames Laboratory, 2416 Pammel Drive, Spedding Hall Dock, Ames, Iowa 50011, United States
| | - Naresh Eedugurala
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
- Ames Laboratory, 2416 Pammel Drive, Spedding Hall Dock, Ames, Iowa 50011, United States
| | - Arkady Ellern
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Theresa L. Windus
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
- Ames Laboratory, 2416 Pammel Drive, Spedding Hall Dock, Ames, Iowa 50011, United States
| | - Aaron D. Sadow
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
- Ames Laboratory, 2416 Pammel Drive, Spedding Hall Dock, Ames, Iowa 50011, United States
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3
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Pinkas J, Lamač M. Transformations of functional groups attached to cyclopentadienyl or related ligands in group 4 metal complexes. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.03.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Petrov AR, Derheim A, Oetzel J, Leibold M, Bruhn C, Scheerer S, Oßwald S, Winter RF, Siemeling U. A Stable Planar-Chiral N-Heterocyclic Carbene with a 1,1'-Ferrocenediyl Backbone. Inorg Chem 2015; 54:6657-70. [PMID: 26098133 DOI: 10.1021/acs.inorgchem.5b01064] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This paper focuses on the stable, ferrocene-based N-heterocyclic carbene (NHC) rac-[Fe{(η(5)-t-BuC5H3)NpN}2C:] (A'-Np, Np = neopentyl), which is planar-chiral due to the two tert-butyl substituents in 3,3'-positions. A'-Np was synthesized in nine steps starting from 1,1'-di-tert-butylferrocene (1), the first step being its 3,3'-dilithiation to afford rac-[Fe(η(5)-t-BuC5H3Li)2] (rac-fc'Li2, 2). The structures of rac-fc'(SiMe3)2 (3), rac-fc'Br2 (4), rac-fc'(N3)2 (5), and the immediate carbene precursor [A'-NpH]BF4 were determined by single-crystal X-ray diffraction (XRD). The chemical properties of A'-Np were found to be very similar to those of its tert-butyl-free congener A-Np, both being ambiphilic NHCs with rather high calculated HOMO energies (ca. -4.0 eV) and low singlet-triplet gaps (ca. 35 kcal/mol). A Tolman electronic parameter value of 2050 cm(-1) was derived from IR data of cis-[RhCl(A'-Np)(CO)2], indicating the high donicity of A'-Np as a ligand. Consistent with its ambiphilic nature, A'-Np was found to react readily with carbon monoxide, affording the betainic enolate (A'-Np)2CO as four stereoisomers, viz. (RpRp-A'-Np)═C(O(-))(RpRp-A'-Np(+)), (SpSp-A'-Np)═C(O(-))(SpSp-A'-Np(+)), (RpRp-A'-Np)═C(O(-))(SpSp-A'-Np(+)), and (SpSp-A'-Np)═C(O(-))(RpRp-A'-Np(+)). The former two isomers were structurally characterized as a racemic compound by single-crystal XRD. A'-Np was found to react swiftly with dichloromethane, affording the addition product A'-NpH-CHCl2 in a reaction that is unprecedented for diaminocarbenes. A-NpH-CHCl2 was obtained analogously. Both compounds were structurally characterized by single-crystal XRD. An electrochemical investigation of A'-Np by cyclic and square wave voltammetry revealed a reversible oxidation of the carbene at a half-wave potential of -0.310 vs ferrocene/ferrocenium (THF/NBu4PF6). The electrochemical data previously published for A-Np were identified to be incorrect, since unnoticed hydrolysis of the NHC had taken place, affording A-Np(H2O). The hydrolysis products of A-Np and A'-Np were found to be reversibly oxidized at half-wave potentials of -0.418 and -0.437 V, respectively.
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Affiliation(s)
- Alex R Petrov
- †Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Anatoli Derheim
- †Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Jan Oetzel
- †Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Michael Leibold
- †Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Clemens Bruhn
- †Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Stefan Scheerer
- ‡Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Steffen Oßwald
- ‡Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Rainer F Winter
- ‡Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Ulrich Siemeling
- †Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
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Kohrt S, Dachwitz S, Daniliuc CG, Kehr G, Erker G. Stabilized borata-alkene formation: structural features, reactions and the role of the counter cation. Dalton Trans 2015; 44:21032-40. [DOI: 10.1039/c5dt04058b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A stable borata-alkene was prepared starting from dimethylbenzofulvene and Piers' borane [HB(C6F5)2]. It undergoes a cycloaddiiton reaction with chalcone.
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Affiliation(s)
- Sonja Kohrt
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- D-48149 Münster
- Germany
| | - Steffen Dachwitz
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- D-48149 Münster
- Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- D-48149 Münster
- Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- D-48149 Münster
- Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- D-48149 Münster
- Germany
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Kutlescha K, Venkanna GT, Kempe R. The potassium hydride mediated trimerization of imines. Chem Commun (Camb) 2011; 47:4183-5. [PMID: 21359290 DOI: 10.1039/c0cc04565a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel reaction, the potassium hydride mediated synthesis of fulvenes, is described. The synthesis utilizes N-aryl imines as an inexpensive starting material affording novel substituted aminofulvenes. It is proposed that the presence of the metalated enamine as well as the imine (ratio 2 : 1) leads to the formation of an initial dimerization and a transient trimerization product, which cyclizes, giving rise to the aminofulvene.
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Affiliation(s)
- Kathrin Kutlescha
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
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Erker G. Bio-Organometallic Chemistry, ansa-Metallocenes, and Frustrated Lewis Pairs: Functional Group Chemistry at the Group 4 Bent Metallocenes. Organometallics 2011. [DOI: 10.1021/om101118a] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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Li X, Hong J, Liu R, Weng L, Zhou X. Reactions of Cp3Y with Benzophenone: A Simple and Efficient Method for Transformation of Unsubstituted Cyclopentadienyl to Bridged ansa-Cyclopentadienyl/Alkoxyl Ligand. Organometallics 2010. [DOI: 10.1021/om100755s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoqing Li
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Jianquan Hong
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Ruiting Liu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Linhong Weng
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Xigeng Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai 200032, People’s Republic of China
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Greger I, Kehr G, Erker G. Zirconocene Functional Group Chemistry: Photochemical [4+4] Cycloaddition of Isoprenyl Sidechains to the Bent Metallocene Framework. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ingo Greger
- Organisch‐Chemisches Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany, Fax: +49‐251‐8336503
| | - Gerald Kehr
- Organisch‐Chemisches Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany, Fax: +49‐251‐8336503
| | - Gerhard Erker
- Organisch‐Chemisches Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany, Fax: +49‐251‐8336503
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10
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Greger I, Kehr G, Fröhlich R, Erker G. Dynamic Topochemical Reaction Control−A Principle and Its Application in ansa-Metallocene Synthesis. Organometallics 2010. [DOI: 10.1021/om100467y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ingo Greger
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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11
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Greger I, Kehr G, Fröhlich R, Erker G. Functional Group Chemistry at the Group 4 Bent Metallocene Framework: [2+2] Cycloaddition of the Parent Bis(vinyl-Cp/vinyl-Ind)ZrCl2 Systems. Organometallics 2010. [DOI: 10.1021/om900939v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ingo Greger
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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12
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Stephan D, Erker G. Frustrated Lewis Pairs: Metal-free Hydrogen Activation and More. Angew Chem Int Ed Engl 2009; 49:46-76. [DOI: 10.1002/anie.200903708] [Citation(s) in RCA: 1641] [Impact Index Per Article: 109.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Stephan D, Erker G. Frustrierte Lewis-Paare: metallfreie Wasserstoffaktivierung und mehr. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903708] [Citation(s) in RCA: 640] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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14
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Axenov KV, Kehr G, Fröhlich R, Erker G. Functional Group Chemistry at the Group 4 Bent Metallocene Frameworks: Formation and “Metal-Free” Catalytic Hydrogenation of Bis(imino-Cp)zirconium Complexes. Organometallics 2009. [DOI: 10.1021/om9004093] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kirill V. Axenov
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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Tumay TA, Kehr G, Fröhlich R, Erker G. Synthesis of an Amino-Functionalized ansa-Zirconocene by Intramolecular Photochemical Enamine [2+2]Cycloaddition. Organometallics 2009. [DOI: 10.1021/om9003576] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tülay Aslı Tumay
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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Ryabov AN, Izmer VV, Tzarev AA, Uborsky DV, Asachenko AF, Nikulin MV, Canich JAM, Voskoboynikov AZ. Palladium-Catalyzed Cross-Coupling Reactions of Bromo-Substituted Group 4 Metallocenes. Organometallics 2009. [DOI: 10.1021/om900353m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexey N. Ryabov
- Department of Chemistry, Moscow State University, Leninskie Gory, 1/3, Moscow, GSP-1, 119991, Russian Federation
| | - Vyatcheslav V. Izmer
- Department of Chemistry, Moscow State University, Leninskie Gory, 1/3, Moscow, GSP-1, 119991, Russian Federation
| | - Alexey A. Tzarev
- Department of Chemistry, Moscow State University, Leninskie Gory, 1/3, Moscow, GSP-1, 119991, Russian Federation
| | - Dmitry V. Uborsky
- Department of Chemistry, Moscow State University, Leninskie Gory, 1/3, Moscow, GSP-1, 119991, Russian Federation
| | - Andrey F. Asachenko
- Department of Chemistry, Moscow State University, Leninskie Gory, 1/3, Moscow, GSP-1, 119991, Russian Federation
| | - Mikhail V. Nikulin
- Department of Chemistry, Moscow State University, Leninskie Gory, 1/3, Moscow, GSP-1, 119991, Russian Federation
| | - Jo Ann M. Canich
- ExxonMobil Chemical Company 5200 Bayway Drive, Baytown, Texas 77520
| | - Alexander Z. Voskoboynikov
- Department of Chemistry, Moscow State University, Leninskie Gory, 1/3, Moscow, GSP-1, 119991, Russian Federation
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Tumay TA, Kehr G, Fröhlich R, Erker G. Ring-closing metathesis of sterically congested functionalized zirconocenes–ethene polymerization catalysts derived from related bridged and open metallocenes. Dalton Trans 2009:8923-8. [DOI: 10.1039/b911218a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Gómez-Ruiz S, Kaluđerović GN, Prashar S, Polo-Cerón D, Fajardo M, Žižak Ž, Sabo TJ, Juranić ZD. Cytotoxic studies of substituted titanocene and ansa-titanocene anticancer drugs. J Inorg Biochem 2008; 102:1558-70. [DOI: 10.1016/j.jinorgbio.2008.02.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2007] [Revised: 01/23/2008] [Accepted: 02/04/2008] [Indexed: 10/22/2022]
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19
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Structural Features of [(CpPPh2AuCl)2ZrCl2]: Exploring the Limits of Aurophilic Interactions. Chem Asian J 2008; 3:753-8. [DOI: 10.1002/asia.200700353] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Erker G, Kehr G, Fröhlich R. Functionalized Alkali Metal Cyclopentadienides: Structural and Chemical Features. Organometallics 2007. [DOI: 10.1021/om7007666] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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21
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Chen L, Kehr G, Fröhlich R, Erker G. Functional Group Chemistry at the Zirconocene Backbone: Addition Reactions to Pendant Alkynyl Substituents. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700749] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Liyi Chen
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
| | - Gerald Kehr
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
| | - Roland Fröhlich
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
| | - Gerhard Erker
- Organisch‐Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, Fax: +49‐251‐83‐36503
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22
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Gómez-Ruiz S, Polo-Cerón D, Prashar S, Fajardo M, Antiñolo A, Otero A. Synthesis and Reactivity of Alkenyl-Substituted Zirconocene Complexes and Their Application as Olefin Polymerisation Catalysts. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700394] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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