Organoborierung von alkinylstannanen: XV. Synthese von 1,2-dihydro-1,2,5-disilaborepinen |
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| Institution: | 1. Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, OH 44106, USA;2. Department of Physics, Case Western Reserve University, 2076 Adelbert Road, Cleveland, OH 44106, USA;1. Department of Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120, Heidelberg, Germany;2. Department of Biophysical Chemistry, University of Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany;3. Département de Chimie, Centre Québécois des Matériaux Fonctionnels (CQMF), and Regroupement Québécois des Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada;1. Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China;2. Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi''an, Shaanxi 710072, China;3. State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau;4. School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, China;5. Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region;6. Northwestern Polytechnical University Chongqing Technology Innovation Center, Chongqing 400000, China;1. INM - Leibniz Institute for New Materials, 66123 Saarbrücken, Germany;2. Department of Materials Science and Engineering, Saarland University, 66123 Saarbrücken, Germany;3. Department of Mechanical Engineering, Istanbul Kemerburgaz University, 34217 Istanbul, Turkey |
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| Abstract: | The reaction between 1,2-diethynyl-tetramethyldisilane (1) and two equivalents of diethylaminotrimethylstannane (2) leads to 1,2-bis(trimethylstannylethynyl)-tetramethyldisilane (3). The new alkyne derivative 3 reacts, already at room temperature, with trialkylboranes, R3B (5) (R = Me, Et), quantitatively to give 1,1,2,2-tetramethyl-3,7-bis(trimethylstannyl)-4,5,6-trialkyl-1,2-dihydro-1,2,5-disilaborepines (6). The reaction is much slower with R = Pri which allows detection of intermediates by NMR spectroscopy. All products are characterized by 1H, 11B, 13C, 29Si and 119Sn NMR data. |
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