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Frydrych M, Sztorch B, Brząkalski D, Pakuła D, Przekop RE, Srishailam K, Reddy BV, Marciniec B. Silane-Bearing Borasilsesquioxanes: Synthetic Protocol and Unsuspected Redistribution Reactions. Chempluschem 2023; 88:e202200295. [PMID: 36592005 DOI: 10.1002/cplu.202200295] [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: 08/26/2022] [Revised: 11/03/2022] [Indexed: 11/09/2022]
Abstract
The presented work is a continuation of research on the reactivity of unsaturated borasilsesquioxanes under the conditions of common organometallic transformations. The catalytic hydrosilylation reaction with silanes, siloxanes and silsesquioxanes in presence of platinum catalyst was explored. The majority of the products were obtained in high yields (>90 %) and their structures were confirmed and characterized by spectroscopy and spectrometry, i. e. NMR and MALDI-TOF-MS. The most significant segment of the work is research on the spontaneous redistribution reaction of the alkoxy group from silane to borane moiety occurring in the obtained products, not being limited to the heterosilsesquioxane chemistry, however. The products were confirmed using GC-MS, ESI-MS methods and B3LYP exchange-correlation, in order to ascertain formation of the silicon-boron hybrid molecule.
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Affiliation(s)
- Miłosz Frydrych
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Bogna Sztorch
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614, Poznań, Poland
| | - Dariusz Brząkalski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Daria Pakuła
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Robert E Przekop
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614, Poznań, Poland
| | - Kanugula Srishailam
- Department of Physics, SR University, Warangal, 506371, Telangana, India.,Department of Physics, Kakatiya University, Warangal, 506009, Telangana, India
| | | | - Bogdan Marciniec
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland.,Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614, Poznań, Poland
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Klintuch D, Höfler MV, Wissel T, Bruhn C, Gutmann T, Pietschnig R. Trifunctional Silyl Groups as Anchoring Units in the Preparation of Luminescent Phosphole-Silica Hybrids. Inorg Chem 2021; 60:14263-14274. [PMID: 34492179 DOI: 10.1021/acs.inorgchem.1c01775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthetic strategy to β-silylphospholes with three methoxy, ethoxy, chloro, hydrido, or phenyl substituents at silicon has been developed, starting from trimethoxy, triethoxy, or triphenyl silyl substituted phenyl phosphanides and 1,4-diphenyl-1,3-butadiyne. These trifunctional silylphospholes were attached to the surface of uniform spheric silica particles (15 μm) and, for comparison, to a polyhedral silsesquioxane (POSS)-trisilanol as a molecular model to explore their luminescent properties in comparison with the free phospholes. Density functional theory calculations were performed to investigate any electronic perturbation of the phosphole system by the trifunctional silyl anchoring unit. For the immobilized phospholes, cross-polarization magic-angle-spinning NMR measurements (13C, 29Si, and 31P) were carried out to explore the bonding situation to the silica surface. Thermogravimetric analysis and X-ray photoelectron spectroscopy measurements were performed to approximate the amount of phospholes covering the silica surface. Identity and purity of all novel phospholes have been established with standard techniques (multinuclear NMR, mass spectrometry, and elemental analysis) and X-ray diffraction for the POSS derivative.
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Affiliation(s)
- Dieter Klintuch
- Institute for Chemistry and CINSaT, Universität Kassel, Heinrich Plett-Straße 40, Kassel 34132, Germany
| | - Mark V Höfler
- Eduard Zintl Institute for Inorganic and Physical Chemistry, Technical Universität (TU) Darmstadt, Alarich-Weiss Straße 8, Darmstadt 64287, Germany
| | - Till Wissel
- Eduard Zintl Institute for Inorganic and Physical Chemistry, Technical Universität (TU) Darmstadt, Alarich-Weiss Straße 8, Darmstadt 64287, Germany
| | - Clemens Bruhn
- Institute for Chemistry and CINSaT, Universität Kassel, Heinrich Plett-Straße 40, Kassel 34132, Germany
| | - Torsten Gutmann
- Institute for Chemistry and CINSaT, Universität Kassel, Heinrich Plett-Straße 40, Kassel 34132, Germany.,Eduard Zintl Institute for Inorganic and Physical Chemistry, Technical Universität (TU) Darmstadt, Alarich-Weiss Straße 8, Darmstadt 64287, Germany
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaT, Universität Kassel, Heinrich Plett-Straße 40, Kassel 34132, Germany
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Fabrication of trichlorovinylsilane-modified-chitosan film with enhanced solubility and antibacterial activity. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-03056-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Yoshikawa M, Tamura Y, Wakabayashi R, Tamai M, Shimojima A, Kuroda K. Protecting and Leaving Functions of Trimethylsilyl Groups in Trimethylsilylated Silicates for the Synthesis of Alkoxysiloxane Oligomers. Angew Chem Int Ed Engl 2017; 56:13990-13994. [PMID: 28895273 DOI: 10.1002/anie.201705942] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Indexed: 11/10/2022]
Abstract
The concept of protecting groups and leaving groups in organic synthesis was applied to the synthesis of siloxane-based molecules. Alkoxy-functionalized siloxane oligomers composed of SiO4 , RSiO3 , or R2 SiO2 units were chosen as targets (R: functional groups, such as Me and Ph). Herein we describe a novel synthesis of alkoxysiloxane oligomers based on the substitution reaction of trimethylsilyl (TMS) groups with alkoxysilyl groups. Oligosiloxanes possessing TMS groups were reacted with alkoxychlorosilane in the presence of BiCl3 as a catalyst. TMS groups were substituted with alkoxysilyl groups, leading to the synthesis of alkoxysiloxane oligomers. Siloxane oligomers composed of RSiO3 and R2 SiO2 units were synthesized more efficiently than those composed of SiO4 units, suggesting that the steric hindrance around the TMS groups of the oligosiloxanes makes a difference in the degree of substitution. This reaction uses TMS groups as both protecting and leaving groups for SiOH/SiO- groups.
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Affiliation(s)
- Masashi Yoshikawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Yasuhiro Tamura
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Ryutaro Wakabayashi
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan.,Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
| | - Misa Tamai
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan.,Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
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Yoshikawa M, Tamura Y, Wakabayashi R, Tamai M, Shimojima A, Kuroda K. Protecting and Leaving Functions of Trimethylsilyl Groups in Trimethylsilylated Silicates for the Synthesis of Alkoxysiloxane Oligomers. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705942] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Masashi Yoshikawa
- Department of Applied Chemistry; Faculty of Science and Engineering; Waseda University; 3-4-1 Ohkubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Yasuhiro Tamura
- Department of Applied Chemistry; Faculty of Science and Engineering; Waseda University; 3-4-1 Ohkubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Ryutaro Wakabayashi
- Department of Applied Chemistry; Faculty of Science and Engineering; Waseda University; 3-4-1 Ohkubo Shinjuku-ku Tokyo 169-8555 Japan
- Kagami Memorial Research Institute for Materials Science and Technology; Waseda University; 2-8-26 Nishiwaseda Shinjuku-ku Tokyo 169-0051 Japan
| | - Misa Tamai
- Department of Applied Chemistry; Faculty of Science and Engineering; Waseda University; 3-4-1 Ohkubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry; Faculty of Science and Engineering; Waseda University; 3-4-1 Ohkubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry; Faculty of Science and Engineering; Waseda University; 3-4-1 Ohkubo Shinjuku-ku Tokyo 169-8555 Japan
- Kagami Memorial Research Institute for Materials Science and Technology; Waseda University; 2-8-26 Nishiwaseda Shinjuku-ku Tokyo 169-0051 Japan
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