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Chen H, Hu X, Wang W, Gao L, Song Z. Recent Progress in the Synthesis of Silaspiranes. Chemistry 2023:e202302371. [PMID: 37739927 DOI: 10.1002/chem.202302371] [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: 07/25/2023] [Revised: 08/31/2023] [Accepted: 09/22/2023] [Indexed: 09/24/2023]
Abstract
Silaspiranes bearing a spiro-silicon center are promising ring frameworks for the synthesis of novel spirocyclic molecules possessing unique properties. Development of efficient methods towards these ring structures has therefore attracted considerable attentions of synthetic chemists. This minireview highlights the representative advances in the field, and is categorized into four parts according to the ring formation strategies: cyclization, annulation, ring expansion and cycloaddition.
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Affiliation(s)
- Hua Chen
- College of Pharmaceutical Science and, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 310014, Hangzhou, P. R. China
| | - Xuejiao Hu
- College of Pharmaceutical Science and, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 310014, Hangzhou, P. R. China
| | - Wanshu Wang
- Key Laboratory of Drug-Targeting and, Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 610064, Chengdu, P. R. China
- Key Laboratory of Organosilicon Chemistry and, Material Technology of Ministry of Education, Hangzhou Normal University, 311121, Hangzhou, P. R. China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and, Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 610064, Chengdu, P. R. China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and, Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 610064, Chengdu, P. R. China
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2
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Spesivaya ES, Lupanova IA, Konshina DN, Konshin VV. Zn(OTf)2/i-Pr2NEt promoted synthesis of tetraalkynylsilanes. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152713] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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3
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Chen C, Daniliuc CG, Mück-Lichtenfeld C, Kehr G, Erker G. A rare olefin 1,1-carboboration reaction opens a synthetic pathway to an unusually structured frustrated Lewis pair. Chem Commun (Camb) 2020; 56:8806-8809. [PMID: 32626861 DOI: 10.1039/d0cc01255f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
(2,6-Dimesitylphenyl)P(vinyl)25d reacts with HB(C6F5)2 in a sequence involving a rare example of a 1,1-carboboration of an olefin to give the borylated tetrahydrophosphole derivative 6d. Compound 6d is an active frustrated Lewis pair that splits dihydrogen under mild conditions and serves as a metal-free hydrogenation catalyst. It also adds to carbon dioxide. Compound 6d serves as an intermediate in the HB(C6F5)2 catalyzed aryl(divinyl)phosphane (5d) to dihydrophosphole conversion.
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Affiliation(s)
- Chaohuang Chen
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany.
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4
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Möricke J, Ueno A, Wibbeling B, Daniliuc CG, Kehr G, Erker G. The XB(C
6
F
5
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Halogenoborane Route to Phosphole Derivatives. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900505] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jennifer Möricke
- Organisch‐Chemisches Institut Universität Münster Corrensstr. 40 48149 Münster Germany
| | - Atsushi Ueno
- Organisch‐Chemisches Institut Universität Münster Corrensstr. 40 48149 Münster Germany
| | - Birgit Wibbeling
- Organisch‐Chemisches Institut Universität Münster Corrensstr. 40 48149 Münster Germany
| | | | - Gerald Kehr
- Organisch‐Chemisches Institut Universität Münster Corrensstr. 40 48149 Münster Germany
| | - Gerhard Erker
- Organisch‐Chemisches Institut Universität Münster Corrensstr. 40 48149 Münster Germany
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Wrackmeyer B, Bayer S, Milius W, Klimkina EV. 1,1-Carboboration of alkynylgermanes – New germoles. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Ma W, Yu C, Chen T, Xu L, Zhang WX, Xi Z. Metallacyclopentadienes: synthesis, structure and reactivity. Chem Soc Rev 2018; 46:1160-1192. [PMID: 28119972 DOI: 10.1039/c6cs00525j] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Metallacyclopentadienes, which possess two M-C(sp2) bonds and feature the structure of M(C[upper bond 1 start]R1[double bond, length as m-dash]CR2-CR3[double bond, length as m-dash]C[upper bond 1 end]R4), are an important class of five-membered metallacycles. They are considered as both reactive intermediates in the stoichiometric and catalytic transformations of organic molecules and useful precursors to main group element compounds, and have received considerable attention in organometallic chemistry, coordination chemistry and synthetic organic chemistry over the past six decades because of their unique metallacyclic structure. This review comprehensively presents the synthesis, structure and reactivity of the s-, p-, d- and f-block metallacyclopentadienes distributed in the whole periodic table. In addition, their application in synthetic organic chemistry and polymer chemistry is summarized. This review aims to be beneficial for the design and synthesis of novel metallacyclopentadienes, and for promoting the rapid development of metallacyclic chemistry.
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Affiliation(s)
- Wangyang Ma
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Chao Yu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Tianyang Chen
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Ling Xu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China. and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
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7
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Liedtke R, Eller C, Daniliuc CG, Williams K, Warren TH, Tesch M, Studer A, Kehr G, Erker G. FLPNO Nitroxide Radical Formation by a 1,1-Carboboration Route. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00886] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- René Liedtke
- Organisch-Chemisches
Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Christina Eller
- Organisch-Chemisches
Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches
Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Kamille Williams
- Department
of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057-1227, United States
| | - Timothy H. Warren
- Department
of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057-1227, United States
| | - Matthias Tesch
- Organisch-Chemisches
Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches
Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Gerald Kehr
- 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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8
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Wrackmeyer B, Khan E. 1,1-Carboboration through Activation of Silicon-Carbon and Tin-Carbon Bonds. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500727] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Eller C, Kehr G, Daniliuc CG, Stephan DW, Erker G. Thiophene synthesis via 1,1-carboboration. Chem Commun (Camb) 2015; 51:7226-9. [PMID: 25813555 DOI: 10.1039/c5cc01806d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of bis(tert-butylethynyl)sulfide with the boron Lewis acid reagents X–B(C6F5)2 (X = CH3, Cl, C6F5) in pentane at r.t. gave the respective borylated thiophenes in a sequence of 1,1-carboboration reactions.
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Affiliation(s)
- Christina Eller
- Organisch-Chemisches Institut der Universität Münster
- 48149 Münster
- Germany
- Department of Chemistry University of Toronto
- Toronto
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität Münster
- 48149 Münster
- Germany
| | | | | | - Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster
- 48149 Münster
- Germany
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10
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Eller C, Kehr G, Daniliuc CG, Erker G. Unusual product formation in a 1,1-carboboration reaction. Chem Commun (Camb) 2015; 51:8436-8. [DOI: 10.1039/c5cc00734h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The reaction of the cross-conjugated enediyne Me2CC(CCSiMe3)2with B(C6F5)3gives the unusual borabicyclo[4.3.0]nonadiene product.
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Affiliation(s)
- Christina Eller
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
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11
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Tsao FA, Lough AJ, Stephan DW. Intramolecular 1,1-carboboration versus intermolecular FLP addition in reactions of boranes and bis(phenylethynyl)telluroether. Chem Commun (Camb) 2015; 51:4287-9. [DOI: 10.1039/c4cc09258a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of boranes with Te(CCPh)2 proceed via initial intermolecular 1,1-carboboration followed by either an intramolecular carboboration or an FLP addition to a second molecule, yielding 1-bora-4-tellurocyclohexa-2,5-diene heterocycles or tricylic derivatives of 1,4-ditellurocyclohexa-2,5-diene, respectively.
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Affiliation(s)
| | | | - Douglas W. Stephan
- Department of Chemistry
- Toronto
- Canada
- Chemistry Department
- Faculty of Science
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12
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Melen RL. Applications of pentafluorophenyl boron reagents in the synthesis of heterocyclic and aromatic compounds. Chem Commun (Camb) 2014; 50:1161-74. [PMID: 24292326 DOI: 10.1039/c3cc48036d] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Recently, main group reagents have attracted a lot of attention in bond-forming reactions in organic synthesis. This article highlights the use of pentafluorophenyl substituted boron reagents in their reactions with C=C and C≡C π-bonds for the synthesis of heterocyclic and aromatic compounds. These cyclisation reactions fall into four general classes although there is some overlap between classes and often combinations of these different types of reactivity are observed in the formation of the final heterocyclic product: (i) 1,2- (and 1,4-) additions of nucleophile and Lewis-acidic boron centre, (ii) 1,1-carboboration, (iii) carbocation rearrangements and (iv) cycloaddition chemistry. In addition, the prospect of using such boron reagents catalytically in the synthesis of aromatic compounds such as oxazoles and dibenzopentalene derivatives is emphasised.
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Affiliation(s)
- Rebecca L Melen
- Department of Chemistry, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.
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13
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Amro K, Thakur AK, Rault-Berthelot J, Poriel C, Hirsch L, Douglas WE, Clément S, Gerbier P. 2,5-Thiophene substituted spirobisiloles – synthesis, characterization, electrochemical properties and performance in bulk heterojunction solar cells. NEW J CHEM 2013. [DOI: 10.1039/c2nj40535k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Ugolotti J, Dierker G, Fröhlich R, Kehr G, Erker G. Reactions of bis(alkynyl)silanes with HB(C6F5)2: Formation of boryl-substituted silacyclobutene derivatives. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Xu BH, Kehr G, Fröhlich R, Grimme S, Erker G. Reaction of Aminodihydropentalenes with HB(C6F5)2: The Crucial Role of Dihydrogen Elimination. J Am Chem Soc 2011; 133:3480-91. [DOI: 10.1021/ja1092369] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bao-Hua Xu
- 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
| | - Stefan Grimme
- 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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Chen C, Eweiner F, Wibbeling B, Fröhlich R, Senda S, Ohki Y, Tatsumi K, Grimme S, Kehr G, Erker G. Exploring the Limits of Frustrated Lewis Pair Chemistry with Alkynes: Detection of a System that Favors 1,1-Carboboration over Cooperative 1,2-P/B-Addition. Chem Asian J 2010; 5:2199-208. [DOI: 10.1002/asia.201000189] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Uhl W, Rohling M, Würthwein EU, Ghavtadze N, Bergander K. Facile Synthesis of an Unsaturated Spiro Germane by Hydroalumination and Intramolecular 1,1-Carbalumination. Organometallics 2010. [DOI: 10.1021/om100359k] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Werner Uhl
- Institut für Anorganische
und Analytische Chemie der Universität Münster, Corrensstrasse
30, D-48149 Münster, Germany
| | - Martina Rohling
- Institut für Anorganische
und Analytische Chemie der Universität Münster, Corrensstrasse
30, D-48149 Münster, Germany
| | - Ernst-Ulrich Würthwein
- Organisch-chemisches Institut der Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | - Nugzar Ghavtadze
- Organisch-chemisches Institut der Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | - Klaus Bergander
- Organisch-chemisches Institut der Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
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Ugolotti J, Kehr G, Fröhlich R, Erker G. Photochemical isomerisation of boryl-substituted silole derivatives. Chem Commun (Camb) 2010; 46:3016-8. [PMID: 20386853 DOI: 10.1039/b927221f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Juri Ugolotti
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany
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20
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Khan E, Bayer S, Kempe R, Wrackmeyer B. Synthesis and Molecular Structure of Silole Derivatives Bearing Functional Groups on Silicon: 1,1‐Organoboration of Dialkynylsilanes. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900697] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ezzat Khan
- Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552157
- Department of Chemistry, University of Malakand, Chakdara, Dir (Lower), North West Frontier Province, Pakistan
| | - Stefan Bayer
- Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552157
| | - Rhett Kempe
- Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552157
| | - Bernd Wrackmeyer
- Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552157
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21
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Khan E, Wrackmeyer B, Kempe R. Combination of 1,2-Hydroboration and 1,1-Organoboration: A Convenient Route to 5-Silaspiro[4,4]nona-1,6-diene Derivatives. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800790] [Citation(s) in RCA: 11] [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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22
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Structure and optical properties of new spirobisilole: 2,3,3′,4,4′5-hexaphenyl-1,1′-siprobisilole. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2007.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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24
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Wrackmeyer B. Metallacyclopentadienes and related heterocycles via 1,1-organoboration of alkyn-1-ylmetal compounds. HETEROATOM CHEMISTRY 2006. [DOI: 10.1002/hc.20222] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Wrackmeyer B, Kenner‐Hofmann BH, Milius W, Thoma P, Tok OL, Herberhold M. Ferrocenylethynyltin Compounds – Characterization and Reactivity towards Triethylborane. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200500602] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bernd Wrackmeyer
- Laboratorium für Anorganische Chemie, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552‐157
| | - Barbara H. Kenner‐Hofmann
- Laboratorium für Anorganische Chemie, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552‐157
| | - Wolfgang Milius
- Laboratorium für Anorganische Chemie, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552‐157
| | - Peter Thoma
- Laboratorium für Anorganische Chemie, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552‐157
| | - Oleg L. Tok
- Laboratorium für Anorganische Chemie, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552‐157
| | - Max Herberhold
- Laboratorium für Anorganische Chemie, Universität Bayreuth, 95440 Bayreuth, Germany, Fax: +49‐921‐552‐157
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An efficient route to substituted 1-silacyclopent-2-enes and 1-silacyclohex-2-enes via consecutive 1,2-hydroboration and 1,1-organoboration. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2005.03.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Novel sila-2,4-cyclopentadienes via 1,1-ethylboration of Si- and C functionalised di(alkyn-1-yl)silanes. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2003.09.029] [Citation(s) in RCA: 12] [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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28
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Rogojerov M, Wrackmeyer B, Badshah A, Jordanov B. IR linear dichroic spectra of the tetrahedral molecules tetrapropyn-1-yl silicon and -tin in anisotropic solvents. J Mol Struct 2003. [DOI: 10.1016/s0022-2860(03)00320-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Wrackmeyer B, Milius W, Bhatti MH, Ali S. [4+2]Cycloadditions of organometallic-substituted siloles with dimethyl acetylenedicarboxylate and tetracyanoethylene. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(02)02114-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wrackmeyer B, Milius W, Klimkina EV, Bubnov YN. 1-Boraadamantane: reactivity towards di(1-alkynyl)silicon and -tin compounds: first access to 7-metalla-2,5-diboranorbornane derivatives. Chemistry 2001; 7:775-82. [PMID: 11288867 DOI: 10.1002/1521-3765(20010216)7:4<775::aid-chem775>3.0.co;2-v] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
1-Boraadamantane (1) reacts with di(1-alkynyl)silicon and -tin compounds 2 (Me2M(C...CR)2: M=Si; R=Me (a), tBu (b), SiMe3 (c); M=Sn, R=SiMe3 (e)) in a 1:1 ratio by intermolecular 1,1-alkylboration, followed by intramolecular 1,1-vinylboration, to give siloles 5a-c and the stannole 5e, respectively, in which the tricyclic 1-boraadamantane system is enlarged by two carbon atoms. Owing to the high reactivity of 1, a second fast intermolecular 1,1-alkylboration competes with the intramolecular 1,1-vinylboration as the second major step in the reaction if the substituent R at the C...C bond is small (2a) and/or if the M-C... bond is also highly reactive, as in 2d (M=Sn, R= Me) and 2e (M=Sn, R=SiMe3). This leads finally to the novel octacyclic 7-metalla-2,5-diboranorbornane derivatives 8a, 8d, and 8e, of which 8e was characterized by X-ray analysis in the solid state. 1,1,2,2-Tetramethyldi(1-propynyl)disilane, MeC...C-SiMe2SiMe2-C...CMe (3), reacts with 1 to give mainly a 1,2-dihydro-1,2,5-disilaborepine derivative 9 and the octacyclic compound 11, which is analogous to 8a but with an Me4Si2 bridge. All new products were characterized in solution by 1H, 11B, 13C, 29Si, and 119Sn NMR spectroscopy. For 8 and 11, highly resolved 29Si and 119Sn NMR spectra revealed the first two-bond isotope-induced chemical shifts, 2delta10/11B(29Si) and 2delta10/11B(119Sn) respectively, to be reported.
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Affiliation(s)
- B Wrackmeyer
- Laboratorium für Anorganische Chemie, Universität Bayreuth, Germany.
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Hartbaum C, Roth G, Fischer H. Polynuclear Complexes with Propynylidene C3-Bridges: General Synthetic Route to Bis-, Tris-, and Tetrakis(ethynylcarbene) Complexes. Eur J Inorg Chem 1998. [DOI: 10.1002/(sici)1099-0682(199802)1998:2<191::aid-ejic191>3.0.co;2-t] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wrackmeyer B, von Locquenghien KH, Kundler S. Stepwise synthesis of organometallic-substituted stannoles via stabilized triorganotin cations. J Organomet Chem 1995. [DOI: 10.1016/0022-328x(95)05550-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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1,1-Organoboration of tri-1-alkynyltin compounds: novel triorganotin cations, stannoles, 3-stannolenes and 1-stanna-4-bora-2,5-cyclohexadienes. Inorganica Chim Acta 1994. [DOI: 10.1016/0020-1693(94)03869-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Wrackmeyer B, Kundler S, Milius W, Boese R. Stabilization of Triorganotin Cations — Competition between Intramolecular Coordinative O, S or NSn Bonds and Side-on π Coordination to CC Bonds. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/cber.19941270209] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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