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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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Wu W, Chen J, Qiao L, Lv H, Zhang F, Zhu Y, Wu S, Fan B. Ruthenium‐Photocatalyzed Synthesis of Borasiloxanes in a One‐Pot Manner from Readily Available Silanes and Pinacolborane. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wei Wu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Kunming 650500 P. R. China
| | - Jingchao Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Kunming 650500 P. R. China
| | - Lulin Qiao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Kunming 650500 P. R. China
| | - Haiping Lv
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Kunming 650500 P. R. China
| | - Fuqin Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Kunming 650500 P. R. China
| | - Yuanbin Zhu
- Yunnan Tiefeng High Tech Mining Chemicals. Co. Ltd Qingfeng industrial park Lufeng 651200 Yunnan Province P. R. China
| | - Shiyuan Wu
- Yunnan Tiefeng High Tech Mining Chemicals. Co. Ltd Qingfeng industrial park Lufeng 651200 Yunnan Province P. R. China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Kunming 650500 P. R. China
- Yunnan Tiefeng High Tech Mining Chemicals. Co. Ltd Qingfeng industrial park Lufeng 651200 Yunnan Province P. R. China
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Frydrych M, Sztorch B, Brząkalski D, Pakuła D, Frąckowiak D, Majchrzak M, Marciniec B. New Functionalized Borasilsesquioxanes Obtained via Metathetical Transformation of 4‐Vinylphenylborasilsesquioxanes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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
| | - Dawid Frąckowiak
- Centre for Advanced Technologies Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 10 61‐614 Poznań Poland
| | - Mariusz Majchrzak
- Faculty of Chemistry Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 61‐614 Poznań Poland
| | - 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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Stadler A, Kappe CO. Automated library generation using sequential microwave-assisted chemistry. Application toward the Biginelli multicomponent condensation. JOURNAL OF COMBINATORIAL CHEMISTRY 2001; 3:624-30. [PMID: 11703160 DOI: 10.1021/cc010044j] [Citation(s) in RCA: 168] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The concept of automated sequential microwave-assisted library synthesis is introduced. For this purpose a dedicated single-mode microwave reactor with a robotics interface including a liquid handler and gripper was employed. The liquid handler allows dispensing of reagents into the Teflon sealed reaction vials, while the gripper moves each sealed vial in and out of the microwave cavity after irradiation. This technology was employed for the Biginelli three-component cyclocondensation reaction. A diverse set of 17 CH-acidic-carbonyl compounds (1A-Q), 25 aldehydes (2a-y), and 8 urea/thioureas (3alpha-varphi) was used in the preparation of a dihydropyrimidine (DHPM) library. Out of the full set of 3400 possible DHPM derivatives, a representative subset of 48 analogues was prepared using automated addition of building blocks and subsequent sequential microwave irradiation of each process vial. For most building block combinations 10 min of microwave flash heating at 120 degrees C using AcOH/EtOH (3:1) and 10 mol % Yb(OTf)(3) as solvent/catalyst system proved to be successful, leading to an average isolated yield of 52% of DHPMs with >90% purity. For some building block combinations the general conditions were modified, for example, by changing the solvent, catalyst, reaction temperature, or irradiation time. This flexibility is a distinct advantage of sequential over parallel microwave-assisted processes where all reactions are exposed to the same irradiation conditions. When the unattended automation capabilities of the microwave synthesizer are used, a library of this size can be synthesized within 12 h.
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Affiliation(s)
- A Stadler
- Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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