1
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Gerwig M, Böhme U, Friebel M. Challenges in the Synthesis and Processing of Hydrosilanes as Precursors for Silicon Deposition. Chemistry 2024; 30:e202400013. [PMID: 38757614 DOI: 10.1002/chem.202400013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Indexed: 05/18/2024]
Abstract
Hydrosilanes are highly attractive compounds, which can be processed as liquids with printing technology to amorphous silicon films on nearly any solid substrate. The silicon layers can be processed for electronic devices like transistors or thin-film solar cells. The endothermic character of hydrosilanes with their positive enthalpies of formation results in favorable properties for processing. The larger the molecules, the lower their decomposition temperature and the higher their photoactivity. Cyclic hydrosilanes such as cyclopentasilane and cyclohexasilane can be easily deposited. The branched neopentasilane is more difficult to deposit but yields better-quality films after processing. The key challenge is the complex synthesis of the precursors and the hydrosilanes. The available preparative methods are presented in this review and their advantages and disadvantages are evaluated. The following synthesis methods are presented and discussed in this article: Wurtz coupling and other reductive coupling processes, dehydrogenative coupling of silanes, plasma synthesis of chlorinated polysilanes, amine- or chloride-induced disproportionations, and transformation of monosilane to higher silanes. Plasma synthesis is already carried out today as a continuous industrial process. The most effective synthesis methods in the laboratory are currently amine- and chloride-induced disproportionations. There is a great need to further optimize the syntheses of hydrosilanes and to develop new simple synthesis variants.
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Affiliation(s)
- Maik Gerwig
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Uwe Böhme
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Mike Friebel
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
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2
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Takeuchi T, Roy A, Ito H. Iterative Synthesis of Oligosilanes Using Methoxyphenyl- or Hydrogen-Substituted Silylboronates as Building Blocks: A General Synthetic Method for Complex Oligosilanes. J Am Chem Soc 2023. [PMID: 37436952 DOI: 10.1021/jacs.3c05385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Organosilanes have attracted the attention of researchers for more than 150 years due to their unique properties, and they have become indispensable industrial assets. However, many synthesized oligosilanes with multiple Si-Si bonds are relatively simple, i.e., they often only contain a single repeating unit. More laborious customized synthetic routes can lead to more complex oligosilanes, but compared to carbon-based molecules, their structural diversity remains limited. The development of effective and practical synthetic routes to complex oligosilanes that contain mixed substituents constitutes a long-standing challenge. Here, we describe an iterative synthesis of oligosilanes using methoxyphenyl- or hydrogen-substituted silylboronates, which were obtained via transition-metal-catalyzed Si-H borylation reactions. The first key reaction is a cross-Si-Si bond-forming reaction between chloro(oligo)silanes and silylboronates activated by MeLi. The second key reaction is the selective chlorination of the methoxyphenyl group or the hydrogen atom at the terminal of the oligosilanes. Iteration of these two key reactions enables the synthesis of various oligosilanes that are otherwise difficult to access. As a demonstration of the synthetic utility of this iterative synthetic approach, oligosilanes with different sequences were prepared by simply changing the order of the reaction of four different silicon units. Furthermore, a bespoke tree-shaped oligosilane is easily obtained via the present iterative synthesis. The solid-state structures of several of these oligosilanes were unequivocally determined using single-crystal X-ray diffraction analysis.
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Affiliation(s)
- Takumi Takeuchi
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Avijit Roy
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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3
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Nimoth JP, Müller T. Hydrogen-Bridged Oligosilanylsilyl Mono- and Oligosilanylsilyl Dications. Chemistry 2021; 28:e202104318. [PMID: 34882861 PMCID: PMC9305540 DOI: 10.1002/chem.202104318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 11/24/2022]
Abstract
Hydrogen‐bridged oligosilanylsilyl borates 8 [B(C6F5)4], 9[B(C6F5)4] and diborates 10 [B(C6F5)4]2 have been prepared by hydride transfer between α‐ω‐dihydrido‐ (11) and branched tetrahydrido‐oligosilanes (13) and trityl cation. The obtained cyclic intramolecularly stabilized silylium ions 8, 9 and bissilylium ion 10 were characterized by low temperature NMR spectroscopy supported by the results of density functional calculations. The branched Si−H−Si monocation 9 undergoes at low temperatures a fast degenerate rearrangement, which exchanges the Si−H groups with a barrier of 31 kJ mol−1 via an antarafacial transition state. Reaction of the branched monocation 9 with a second equivalent of trityl cation or of the branched oligosilane 13 with two equivalents of trityl cation, gives at −80 °C the corresponding bissilylium ion 10, an example for a new class of highly reactive poly‐Lewis acids.
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Affiliation(s)
- Jelte P Nimoth
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
| | - Thomas Müller
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl von Ossietzky-Str. 9-11, 26129, Oldenburg, Germany, European Union
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4
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Klare HFT, Oestreich M. The Power of the Proton: From Superacidic Media to Superelectrophile Catalysis. J Am Chem Soc 2021; 143:15490-15507. [PMID: 34520196 DOI: 10.1021/jacs.1c07614] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Superacidic media became famous in connection with carbocations. Yet not all reactive intermediates can be generated, characterized, and eventually isolated from these Brønsted acid/Lewis acid cocktails. The counteranion, that is the conjugate base, in these systems is often too nucleophilic and/or engages in redox chemistry with the newly formed cation. The Brønsted acidity, especially superacidity, is in fact often not even crucial unless protonation of extremely weak bases needs to be achieved. Instead, it is the chemical robustness of the aforementioned counteranion that determines the success of the protolysis. The advent of molecular Brønsted superacids derived from weakly coordinating, redox-inactive counteranions that do withstand the enormous reactivity of superelectrophiles such as silicon cations completely changed the whole field. This Perspective summarizes general aspects of medium and molecular Brønsted acidity and shows how applications of molecular Brønsted superacids have advanced from stoichiometric reactions to catalytic processes involving protons and in situ generated superelectrophiles.
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Affiliation(s)
- Hendrik F T Klare
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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5
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He T, Klare HFT, Oestreich M. Silylium-Ion Regeneration by Protodesilylation Enables Friedel–Crafts Alkylation with Less Isomerization and No Defunctionalization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03602] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao He
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Hendrik F. T. Klare
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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6
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Hermannsdorfer A, Driess M. Silicon Tetrakis(trifluoromethanesulfonate): A Simple Neutral Silane Acting as a Soft and Hard Lewis Superacid. Angew Chem Int Ed Engl 2021; 60:13656-13660. [PMID: 33826216 PMCID: PMC8252640 DOI: 10.1002/anie.202103414] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/01/2021] [Indexed: 11/10/2022]
Abstract
A facile synthesis and isolation of pristine silicon tetrakis(trifluoromethanesulfonate), Si(OTf)4 , is reported, acting as the first neutral silicon-based Lewis superacid suitable towards soft and hard Lewis bases. Its OTf groups have a dual function: they are excellent leaving groups and modulate the degree of reactivity towards soft and hard Lewis bases. Exposed to soft Lewis donors, Si(OTf)4 leads to [L2 Si(OTf)4 ] complexes (L=isocyanide, thioether and carbonyl compounds) with retention of all Si-OTf bonds. In contrast, it can cleave C-X bonds (X=F, Cl) of hard organic Lewis bases with a high tendency to form SiX4 (X=F, Cl) after halide/triflate exchange. Most notable, Si(OTf)4 allows a gentle oxydefluorination of mono- and bis(trifluoromethyl)benzenes, resulting in the formation of the corresponding benzoylium species, which are stabilized by the weakly coordinating [Si(OTf)6 ] dianion.
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Affiliation(s)
- André Hermannsdorfer
- Department of Chemistry: Metalorganics and Inorganic MaterialsTechnische Universität BerlinStrasse des 17. Juni 115, Sekr. C210623BerlinGermany
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic MaterialsTechnische Universität BerlinStrasse des 17. Juni 115, Sekr. C210623BerlinGermany
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7
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Hermannsdorfer A, Driess M. Siliciumtetrakis(trifluormethansulfonat): Ein einfaches, neutrales Silan als weiche und harte Lewis‐Supersäure. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103414] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- André Hermannsdorfer
- Institut für Chemie, Metallorganische Chemie und anorganische Materialien Technische Universität Berlin Straße des 17. Juni 115, Sekr. C2 10623 Berlin Deutschland
| | - Matthias Driess
- Institut für Chemie, Metallorganische Chemie und anorganische Materialien Technische Universität Berlin Straße des 17. Juni 115, Sekr. C2 10623 Berlin Deutschland
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8
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Omatsu Y, Mizuhata Y, Tokitoh N. Easily Separable Cyclic Oligosilanes with
p
‐Methoxyphenyl Groups and Their Stereoselective Functionalization. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yamato Omatsu
- Institute for Chemical Research Kyoto University Gokasho Uji Kyoto 611-0011 Japan
| | - Yoshiyuki Mizuhata
- Institute for Chemical Research Kyoto University Gokasho Uji Kyoto 611-0011 Japan
- Integrated Research Consortium on Chemical Sciences Uji Kyoto Japan
| | - Norihiro Tokitoh
- Institute for Chemical Research Kyoto University Gokasho Uji Kyoto 611-0011 Japan
- Integrated Research Consortium on Chemical Sciences Uji Kyoto Japan
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9
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Minato M, Watanabe H, Shimizu T, Shibuya T, Yamamoto R, Ishikura K, Zhou DY. One-pot synthesis of polysiloxanes using catalytic reaction of dihydroorganosilanes with DMF: A new approach to functional polysiloxanes. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Marro EA, Folster CP, Press EM, Im H, Ferguson JT, Siegler MA, Klausen RS. Stereocontrolled Syntheses of Functionalized cis- and trans-Siladecalins. J Am Chem Soc 2019; 141:17926-17936. [PMID: 31600060 DOI: 10.1021/jacs.9b09902] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the synthesis of both diastereomers of an all-silicon analog of decalin. Carbocyclic decalin is a ubiquitous bicyclic structural motif. The siladecalin synthesis provides materials functionalized with either Si-Ph or Si-H groups, versatile entry points for further chemical diversification. The synthesis of silicon-stereogenic silanes is significantly less precedented than the synthesis of asymmetric carbon centers, and strategies for control of relative stereochemistry in oligosilanes are hardly described. This study offers insights of potential generality, such as the epimerization of the cis-isomer to the thermodynamically downhill trans-isomer via a hypothesized pentavalent intermediate. Decalin is a classic example in the conformational analysis of organic ring systems, and the carbocyclic diastereomers have highly divergent conformational profiles. Like the carbocycle, we observe different conformational properties in cis- and trans-siladecalins with consequences for NMR spectroscopy, optical properties, and vibrational spectroscopy. This study showcases the utility of targeted synthesis for preparing complex and functionalized polycyclic silanes.
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Affiliation(s)
- Eric A Marro
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
| | - Carlton P Folster
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
| | - Eric M Press
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
| | - Hoyeon Im
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
| | - John T Ferguson
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
| | - Maxime A Siegler
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
| | - Rebekka S Klausen
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
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11
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Affiliation(s)
- Carlton P. Folster
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Phi N. Nguyen
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Maxime A. Siegler
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Rebekka S. Klausen
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
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12
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Christopoulos V, Rotzinger M, Gerwig M, Seidel J, Kroke E, Holthausen M, Wunnicke O, Torvisco A, Fischer R, Haas M, Stueger H. Synthesis and Properties of Branched Hydrogenated Nonasilanes and Decasilanes. Inorg Chem 2019; 58:8820-8828. [PMID: 31198024 DOI: 10.1021/acs.inorgchem.9b01204] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Branched higher silicon hydrides Si nH2 n+2 with n > 6 were recently found to be excellent precursors for the liquid phase deposition of silicon films. Herein we report the gram-scale synthesis of the novel nona- and decasilanes (H3Si)3Si(SiH2) nSi(SiH3)3 (2: n = 1, 5: n = 2) from (H3Si)3SiLi and Cl(SiPh2) nCl by a combined salt elimination/dephenylation/hydrogenation approach. Structure elucidation of the target molecules was performed by NMR spectroscopy and X-ray crystallography. 2 and 5 are nonpyrophoric and exhibit a bathochromically shifted UV absorption compared to neopentasilane and the structurally related octasilane (H3Si)3SiSi(SiH3)3. TG-MS analysis elucidated increased decomposition temperatures and decreased ceramic yields for branched hydrosilanes relative to cyclopentasilane. Otherwise, very similar thermal properties were observed for hydrosilane oligomers with linear and branched structures.
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Affiliation(s)
- Viktor Christopoulos
- Institute of Inorganic Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | - Markus Rotzinger
- Institute of Inorganic Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | | | | | | | | | - Odo Wunnicke
- Evonik Creavis GmbH , Paul-Baumann-Strasse 1 , 45772 Marl , Germany
| | - Ana Torvisco
- Institute of Inorganic Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | - Roland Fischer
- Institute of Inorganic Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | - Michael Haas
- Institute of Inorganic Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | - Harald Stueger
- Institute of Inorganic Chemistry , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
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13
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Kirpichenko SV, Albanov AI, Shainyan BA. Mechanism of Protodephenylation of 1,3-Silaheterocyclohexanes. Effect of Heteroatom. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218010152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Henrion S, Carboni B, Cossío FP, Roisnel T, Villalgordo JM, Carreaux F. Stereospecific Synthesis of α-Amino Allylsilane Derivatives through a [3,3]-Allyl Cyanate Rearrangement. Mild Formation of Functionalized Disiloxanes. J Org Chem 2016; 81:4633-44. [PMID: 27163288 DOI: 10.1021/acs.joc.6b00505] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient asymmetric synthesis of α-amino allylsilane derivatives is reported. The strategy is based on a [3,3]-allyl cyanate sigmatropic rearrangement from enantioenriched γ-hydroxy alkenylsilyl compounds. The isocyanate intermediate can be trapped by several nucleophiles, opening the way for the preparation of unknown chiral functionalized compounds such as the α-ureido allylsilanes as well as carbamate derivatives. A computational study was conducted to rationalize the complete 1,3-chirality transfer of this kind of rearrangement. Moreover, starting from products bearing a phenyldimethyl silyl substituent, the α-amino silane derivatives or the corresponding disiloxanes can be obtained under hydrogenation conditions in an exclusive way according to the used catalyst.
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Affiliation(s)
- Sylvain Henrion
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1 , 263, avenue du Général Leclerc, Campus de Beaulieu, Bâtiment 10A, 35042 Cedex Rennes, France
| | - Bertrand Carboni
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1 , 263, avenue du Général Leclerc, Campus de Beaulieu, Bâtiment 10A, 35042 Cedex Rennes, France
| | - Fernando P Cossío
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) , PO Manuel Lardizabal 3, 20018 San Sebastián/Donostia, Spain
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1 , 263, avenue du Général Leclerc, Campus de Beaulieu, Bâtiment 10A, 35042 Cedex Rennes, France
| | - Jose M Villalgordo
- VillaPharma Research, Parque Tecnológico de Fuente Álamo , Ctra El Estrecho-Lobosillo, Av. Azul, E-30320, Murcia, Spain
| | - François Carreaux
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1 , 263, avenue du Général Leclerc, Campus de Beaulieu, Bâtiment 10A, 35042 Cedex Rennes, France
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15
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Stueger H, Christopoulos V, Temmel A, Haas M, Fischer R, Torvisco A, Wunnicke O, Traut S, Martens S. Selective Synthesis and Derivatization of Germasilicon Hydrides. Inorg Chem 2016; 55:4034-8. [PMID: 27031097 DOI: 10.1021/acs.inorgchem.6b00349] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mixed Si/Ge hydrides SixGeyHz are valuable precursors for the deposition of binary Si-Ge alloys. This work describes the synthesis and full characterization of the previously unknown germaisotetrasilane Ph3GeSi(SiH3)3 (2) on a multigram scale from the reaction of the lithium silanide LiSi(SiH3)3 with Ph3GeCl. The stability of the Si-Ge bond in 2 versus electrophiles and nucleophiles has been investigated with the primary aim of developing new approaches to mixed sila-H-germanes (H3Ge)xSi(SiH3)4-x. With 1 equiv of MeLi, 2 reacted cleanly under cleavage of one Si-Si bond to give Ph3GeSi(SiH3)2Li, which is a valuable synthon for further derivatization. In contrast, the dephenylation reaction of 2 with 1 or 2 equiv of CF3SO3H/iBu2AlH proceeded much less selectively and afforded the desired Ph/H-germasilanes Ph2HGeSi(SiH3)3 and PhH2GeSi(SiH3)3 along with considerable amounts of Si-Ge scission products.
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Affiliation(s)
- Harald Stueger
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Viktor Christopoulos
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Andrea Temmel
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Michael Haas
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Roland Fischer
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Ana Torvisco
- Institute of Inorganic Chemistry, Graz University of Technology , Stremayrgasse 9, A-8010 Graz, Austria
| | - Odo Wunnicke
- Evonik Creavis GmbH , Paul-Baumann-Straße 1, D-45772 Marl, Germany
| | - Stephan Traut
- Evonik Creavis GmbH , Paul-Baumann-Straße 1, D-45772 Marl, Germany
| | - Susanne Martens
- Evonik Creavis GmbH , Paul-Baumann-Straße 1, D-45772 Marl, Germany
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16
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Hlina J, Zitz R, Wagner H, Stella F, Baumgartner J, Marschner C. σ-Bond electron delocalization of branched oligogermanes and germanium containing oligosilanes. Inorganica Chim Acta 2014; 422:120-133. [PMID: 25431502 PMCID: PMC4236089 DOI: 10.1016/j.ica.2014.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 07/04/2014] [Accepted: 07/07/2014] [Indexed: 11/13/2022]
Abstract
Oligogermanes and germaoligosilanes isostructural to oligosilanes were synthesized. UV absorption data and X-ray diffraction revealed only marginal differences. Conformational flexibility is directly reflected in the UV absorption spectrum.
In order to evaluate the influence of germanium atoms in oligo- and polysilanes, a number of oligosilane compounds were prepared where two or more silicon atoms were replaced by germanium. While it can be expected that the structural features of thus altered molecules do not change much, the more interesting question is, whether this modification would have a profound influence on the electronic structure, in particular on the property of σ-bond electron delocalization. The UV-spectroscopic comparison of the oligosilanes with germanium enriched oligosilanes and also with oligogermanes showed a remarkable uniform picture. The expected bathochromic shift for oligogermanes and Ge-enriched oligosilanes was observed but its extent was very small. For the low energy absorption band the bathochromic shift from a hexasilane chain (256 nm) to a hexagermane chain with identical substituent patterns (259 nm) amounts to a mere 3 nm.
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Affiliation(s)
- Johann Hlina
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria
| | - Rainer Zitz
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria
| | - Harald Wagner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria
| | - Filippo Stella
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria
| | - Judith Baumgartner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria
| | - Christoph Marschner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria
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17
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Rodríguez Ortega MPG, Docampo ML, Thomas LH, Montejo M, Marchal Ingraín A, Wilson CC, López González JJ. Synthesis and structural study of precursors of novel methylsilanediols by IR and Raman spectroscopies, single-crystal X-ray diffraction and DFT calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:828-834. [PMID: 24157334 DOI: 10.1016/j.saa.2013.09.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 09/02/2013] [Accepted: 09/07/2013] [Indexed: 06/02/2023]
Abstract
On the way towards the development of a synthetic route aimed at obtaining new methylsilanediol derivatives with an aminocarbonyl group in β to silicon (which may have a potential biological interest), we have synthesized, isolated and purified five diphenylic possible precursors, namely chloromethyl(methyl)diphenylsilane, 2-{[methyl(diphenyl)silyl]methyl}-1H-isoindole-1,3(2H)-dione, N-[(methyl(diphenyl) silanyl)-methyl]-benzamide, N-[(methyl(diphenyl)silyl)-methyl]-acetamide and N-[(methyl(diphenyl)silyl)-methyl]-formamide. The conformational landscape of the five species in this study are explored by means of DFT calculations at the B3LYP/6-311++G(∗∗) level. The theoretical molecular structures predicted are confirmed by the reproduction of their respective IR and Raman spectral profiles, that are completely assigned. Some evidence in the vibrational spectra points to the occurrence of conformational mixtures in the samples. Further, single-crystal X-ray diffraction has allowed the elucidation of the crystalline structure of 2-{[methyl(diphenyl)silyl]methyl}-1H-isoindole-1,3(2H)-dione.
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Affiliation(s)
- M P G Rodríguez Ortega
- Physical and Analytical Chemistry Department, University of Jaén, Campus Las Lagunillas, Ed. B3, Jaén E-23071, Spain
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Sieburth SM. Bioactive Amino Acids, Peptides and Peptidomimetics Containing Silicon. ADVANCES IN SILICON SCIENCE 2014. [DOI: 10.1007/978-94-017-9439-8_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Ichibakase T, Kaneko T, Orito Y, Kotani S, Nakajima M. Construction of quaternary carbon centers by a base-catalyzed enantioselective aldol reaction and related reactions of trimethoxysilyl enol ethers. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.096] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zamfir A, Schenker S, Bauer W, Clark T, Tsogoeva SB. Silicon Lewis Acid Catalyzed [3+2] Cycloaddition Reactions of Hydrazones/Cyclopentadiene: Mild Access to Pyrazolidine Derivatives. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100206] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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IKENAGA K, YASUNAGA S. Highly Efficient Decomposition of Aromatic Polycarbosilane by Treatment with Trifluoromethanesulfonic Acid. KOBUNSHI RONBUNSHU 2010. [DOI: 10.1295/koron.67.326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Haga R, Burschka C, Tacke R. Syntheses, Structures, and Reactions of 2,2,3,3-Tetrakis(trifluoromethanesulfonato)tetrasilanes: Hexacoordination ([4 + 2] Coordination) of the Two Central Silicon Atoms. Organometallics 2008. [DOI: 10.1021/om800332j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryuta Haga
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Christian Burschka
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Reinhold Tacke
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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Popp F, Nätscher JB, Daiss JO, Burschka C, Tacke R. The 2,4,6-Trimethoxyphenyl Unit as a Unique Protecting Group for Silicon in Synthesis and the Silylation Potential of (2,4,6-Trimethoxyphenyl)silanes. Organometallics 2007. [DOI: 10.1021/om700805p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Friedrich Popp
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, D-97074 Würzburg, Germany
| | - Jennifer B. Nätscher
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, D-97074 Würzburg, Germany
| | - Jürgen O. Daiss
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, D-97074 Würzburg, Germany
| | - Christian Burschka
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, D-97074 Würzburg, Germany
| | - Reinhold Tacke
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, D-97074 Würzburg, Germany
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Sieburth SM, Chen C. Silanediol Protease Inhibitors: From Conception to Validation. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500508] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Scott McN. Sieburth
- Department of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA 19010, USA
| | - Chien‐An Chen
- Chemistry Department, Lundbeck Research USA, Inc., 215 College Rd., Paramus, NJ 07652‐1431, USA
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Tsuji H, Shibano Y, Takahashi T, Kumada M, Tamao K. Conformation Dependence of Photophysical Properties of σ–π Conjugation as Demonstrated bycis- andtrans-1,2-Diaryl-1,2-disilacyclohexane Cyclic Systems. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.1334] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bourke SC, Maclachlan MJ, Lough AJ, Manners I. Ring-Opening Protonolysis of Sila[1]ferrocenophanes as a Route to Stabilized Silylium Ions. Chemistry 2005; 11:1989-2000. [PMID: 15700324 DOI: 10.1002/chem.200400859] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The ring-opening reactions of a series of sila[1]ferrocenophanes with protic acids of anions with various degrees of noncoordinating character have been explored. Ferrocenyl-substituted silyl triflates FcSiMe2OTf (5 a) and Fc(3)SiOTf (5 b) (Fc=(eta5-C5H4)Fe(eta5-C5H5)) were synthesized by means of HOTf-induced ring-opening protonolysis of strained sila[1]ferrocenophanes fcSiMe2 (3 a) and fcSiFc2 (3 b) (fc=(eta5-C5H4)2Fe). Reaction of 3 a and 3 b with HBF4 yielded fluorosubstituted ferrocenylsilanes FcSiMe2F (6 a) and Fc3SiF (6 b) and suggested the intermediacy of a highly reactive silylium ion capable of abstracting F- from the [BF4]- ion. Generation of the solvated silylium ions [FcSiMe2THF]+ (7a+), [Fc3SiTHF]+ (7b+) and [FcSiiPr2OEt2]+ (7c+) at low temperatures, by reaction of the corresponding sila[1]ferrocenophanes (3 a, 3 b, and fcSiiPr2 (3 c), respectively) with H(OEt2)(S)TFPB (S=Et2O or THF; TFPB=tetrakis[3,5-bis(trifluoromethyl)phenyl]borate) was monitored by using low-temperature 1H, 13C, and 29Si NMR spectroscopy. In situ reaction of 7a+, 7b+, and 7c+ with excess pyridine generated [FcSiMe2py]+ (8a+), [Fc3Sipy]+ (8b+), and [FcSiiPr2py]+ (8c+), respectively, as observed by 1H, 13C, and 29Si NMR spectroscopy. A preparative-scale reaction of 3 b with H(OEt2)(THF)TFPB at -60 degrees C and subsequent addition of excess pyridine gave isolable red crystals of 8b-[TFPB]CHCl3, which were characterized by 1H and 29Si NMR spectroscopy as well as by single-crystal X-ray diffraction.
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Affiliation(s)
- Sara C Bourke
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, M5S 3H6, Canada
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Krempner C, Jäger-Fiedler U, Mamat C, Spannenberg A, Weichert K. Highly reactive oligosilyltriflates—synthesis, structure and rearrangement. NEW J CHEM 2005. [DOI: 10.1039/b408573f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Levin V, Dilman A, Belyakov P, Korlyukov A, Struchkova M, Tartakovsky V. Tris(pentafluorophenyl)silyl Triflate: Synthesis and Silylation of Carbonyl Compounds. European J Org Chem 2004. [DOI: 10.1002/ejoc.200400552] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Daiss JO, Penka M, Burschka C, Tacke R. The Si-2,4,6-Trimethoxyphenyl Moiety as a Novel Protecting Group in Organosilicon Chemistry: Alternative Synthesis of rac-Sila-venlafaxine. Organometallics 2004. [DOI: 10.1021/om040087n] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jürgen O. Daiss
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Martin Penka
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Christian Burschka
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Reinhold Tacke
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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Kim J, Sieburth SM. Silanediol peptidomimetics. Evaluation of four diastereomeric ACE inhibitors. Bioorg Med Chem Lett 2004; 14:2853-6. [PMID: 15125946 DOI: 10.1016/j.bmcl.2004.03.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2004] [Accepted: 03/16/2004] [Indexed: 10/26/2022]
Abstract
Four diastereomers of a Phe-Ala peptide mimic incorporating a central silanediol group have been individually prepared and tested as inhibitors of angiotensin-converting enzyme (ACE). Three of the silanediols exhibit levels of inhibition that are similar to those of corresponding ketones reported by Almquist. For the fourth diastereomer, with both stereogenic carbons inverted relative to the most active isomer, the ketone gives the least enzyme inhibition whereas the silanediol shows a surprisingly low IC50 value.
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Affiliation(s)
- Jaeseung Kim
- Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, USA
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Uhlig W. Tailor-made synthesis of functional substituted oligo- and polysilanes from silyl triflates and (aminosilyl)lithium compounds. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00158-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Dilman AD, Ioffe SL. Carbon-carbon bond forming reactions mediated by silicon Lewis acids. Chem Rev 2003; 103:733-72. [PMID: 12630851 DOI: 10.1021/cr020003p] [Citation(s) in RCA: 186] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander D Dilman
- Institut de Chimie Moleculaire d'Orsay, Université Paris Sud, Bât 420, Laboratoire de Synthesé Asymetriqué, 91405 Orsay Cedex, France.
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Böhme U, Günther B, Rittmeister B. Selective Synthesis of N-Methylanilinooligosilanes. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200390104] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Organ MG, Buon C, Decicco CP, Combs AP. A concise synthesis of silanediol-based transition-state isostere inhibitors of proteases. Org Lett 2002; 4:2683-5. [PMID: 12153209 DOI: 10.1021/ol026195s] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] An efficient synthesis of silanediol-based transition-state inhibitors of proteases is described. A new convergent synthesis has been optimized by using a two-step sequence of hydrosilylation followed by the addition of a silyllithio species to an imine. The method should be applicable to the synthesis of a wide variety of silanediol isosteres to probe the utility of this unique transition-state isostere.
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Affiliation(s)
- Michael G Organ
- The Department of Chemistry, York University, Toronto, Ontario M3J 1P3, Canada.
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Synthesis, functionalization, and cross-linking reactions of organosilicon polymers using silyl triflate intermediates. Prog Polym Sci 2002. [DOI: 10.1016/s0079-6700(01)00052-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Uhlig W. Synthesis, functionalization and crosslinking reactions of poly[(silylene)-1,4-phenylenes] and poly[(silylene)-2,5-thienylenes] using silyl triflate intermediates. POLYM ADVAN TECHNOL 2001. [DOI: 10.1002/pat.78] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Glekas A, Sieburth SM. Studies in silanol synthesis: internal nucleophiles and steric hindrance. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)00576-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gross T, Reinke H, Oehme H. Geminal bis(hypersilyl) compounds the synthesis and structure of bis[tris(trimethylsilyl)silyl]silanes. CAN J CHEM 2000. [DOI: 10.1139/v00-136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Protodesilylation of diphenylsilane with trifluoromethanesulfonic acid and subsequent reaction of the obtained bis(trifluoromethanesulfonyloxy)silane with tris(trimethylsilyl)silyllithium (1) (molar ratio 1:2) afforded bis[tris(trimethylsilyl)silyl]silane (8). Methyl-bis[tris(trimethylsilyl)silyl]silane (3) and phenyl-bis[tris(trimethylsilyl)silyl]silane (10) were obtained by coupling reactions of 1 with MeHSiCl2 or PhHSiCl2, respectively, (2:1). By treatment with HCBr3, the H-silanes 3, 8, and10 were converted into the bromosilanes [(Me3Si)3Si]2SiR1R2 (9: R1 = R2 = Br; 11: R1 = Me, R2 = Br; 12: R1 = Ph, R2 = Br). X-ray crystal structure analyses, performed for 3, 10 and 12, confirmed the expected distortions of the molecular skeletons of the compounds. Thus, e.g., in 10, the spatial demand of the two extended hemispherical hypersilyl groups forces a widening of the Si-Si-Si angle at the central Si atom to a value of 128.3°.Key words: silanes, sterically congested, bis(hypersilyl)silanes, hypersilylsilanes, bis(hypersilyl)germanes, tris(trimethylsilyl)silylsilanes.
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Fernández LE, Altabef AB, Navarro A, Fernández Gómez M, Varetti EL. Experimental and theoretical vibrational study of silyl trifluoromethanesulfonate, CF3SO2OSiH3. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2000; 56:1101-1110. [PMID: 10845538 DOI: 10.1016/s1386-1425(99)00207-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Infrared and Raman spectra were obtained for liquid silyl trifluoromethanesulfonate, a silylating agent of limited stability. The molecular geometry was optimized by means of density functional theory and Möller-Plesset second order perturbation theory methods, using different basis sets. The optimized structure presents a gauche conformation, similar to that adopted by methyl trifluoromethanesulfonate, which was determined experimentally a short time ago. The wavenumbers for the normal modes of vibration and the corresponding force constants were also calculated, facilitating the interpretation of the vibrational data. The harmonic force constants given by theory were scaled to reproduce adequately the experimental wavenumbers.
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Affiliation(s)
- L E Fernández
- Instituto de Química y Física, Facultad de Bioquímica, Química y Farmacia, Universidad, Nacional de Tucumán, San Lorenzo, Argentina
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Gross T, Oehme H, Kempe R. Geminal Bis(hypersilyl) Compounds: The Synthesis and Structure of Bis[tris(trimethylsilyl)silyl]methane. Organometallics 1999. [DOI: 10.1021/om981052o] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thoralf Gross
- Fachbereich Chemie der Universität Rostock, D-18051 Rostock, Germany
| | - Hartmut Oehme
- Fachbereich Chemie der Universität Rostock, D-18051 Rostock, Germany
| | - Rhett Kempe
- Institut für Organische Katalyseforschung an der Universität Rostock, D-18055 Rostock, Germany
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Heinicke J, Mantey S, Oprea A, Kindermann MK, Jones PG. Synthesis of aminotri- and aminotetrasilanes by cross-coupling of aminochlorosilanes with chlorotrimethylsilane. HETEROATOM CHEMISTRY 1999. [DOI: 10.1002/(sici)1098-1071(1999)10:7<605::aid-hc14>3.0.co;2-t] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Molander GA, Corrette CP. Preparation of Novel (Fluoroaryl)silanes and Their Applications in the Organoyttrium-Catalyzed Hydrosilylation of Alkenes and Oxidation to Alcohols. Organometallics 1998. [DOI: 10.1021/om980698d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gary A. Molander
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215
| | - Christopher P. Corrette
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215
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Trommer M, Miracle GE, Eichler BE, Powell DR, West R. Synthesis and Reactivity of Several Stable 1-Silaallenes. Organometallics 1997. [DOI: 10.1021/om970246l] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Martin Trommer
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706
| | - Gary E. Miracle
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706
| | - Barrett E. Eichler
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706
| | - Douglas R. Powell
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706
| | - Robert West
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706
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Hassler K, Köll W. Synthese und Eigenschaften chlorierter und bromierter Aryltrisilane und Aryltetrasilane. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(96)06893-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Uhlig W. Funkticonalisierungen und vernetzungsreaktionen an siliciumor-ganischen polymeren. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(97)00305-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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