1
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Qiao GY, Wang X, Li X, Li J, Geng K, Jin E, Xu JJ, Yu J. Unlocking Synthesis of Polyhedral Oligomeric Silsesquioxane-Based Three-Dimensional Polycubane Covalent Organic Frameworks. J Am Chem Soc 2024; 146:3373-3382. [PMID: 38272666 DOI: 10.1021/jacs.3c12650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Reticular chemistry effectively yields porous structures with distinct topological lattices for a broad range of applications. Polyhedral oligomeric silsesquioxane (POSS)-based octatopic building blocks with a rare Oh symmetric configuration and attracting inorganic features have great potential for creating three-dimensional (3D) covalent organic frameworks (COFs) with new topologies. However, the intrinsic flexibility and intensive motion of cubane-type POSS molecules make the construction of 3D regular frameworks challenging. Herein, by fastening three or four POSS cores with per aromatic rigid linker from rational steric directions, we successfully developed serial crystalline 3D COFs with unpresented "the" and scu topologies. Both the experimental and theoretical results proved the formation of target 3D POSS-based COFs. The resultant hybrid networks with designable chemical skeletons and high surface areas maintain the superiorities of both the inorganic and organic components, such as their high compatibility with inorganic salts, abundant periodic electroactive sites, excellent thermal stability, and open multilevel nanochannels. Consequently, the polycubane COFs could serve as outstanding solid electrolytes with a high ionic conductivity of 1.23 × 10-4 S cm-1 and a lithium-ion transference number of 0.86 at room temperature. This work offers a pathway to generate ordered lattices with multiconnected flexible cube motifs and enrich the topologies of 3D COFs for potential applications.
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Affiliation(s)
- Guan-Yu Qiao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiaoxue Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiao Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Juan Li
- Institute of Crystalline Materials, Shanxi University, Taiyuan 030006, P. R. China
| | - Keyu Geng
- Procter and Gamble, Beijing Innovative Center, Beijing 101312, P. R. China
| | - Enquan Jin
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- International Center of Future Science, Jilin University, Changchun 130012, P. R. China
| | - Ji-Jing Xu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- International Center of Future Science, Jilin University, Changchun 130012, P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- International Center of Future Science, Jilin University, Changchun 130012, P. R. China
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2
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Frydrych M, Sztorch B, Przekop RE, Marciniec B. New Ethynylphenylborasilsesquioxanes-Their Reactivity and Behavior during Thermal Decomposition. Int J Mol Sci 2023; 24:13960. [PMID: 37762263 PMCID: PMC10531159 DOI: 10.3390/ijms241813960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
In this paper, a new type of borasilsesquioxanes was synthesized through a condensation process, and its reactivity in catalytic hydrosilylation reactions with silanes, siloxanes, and silsesquioxanes was investigated. The obtained compounds were mostly obtained in >90% yield. They were fully characterized using spectroscopic (1H, 13C, 29Si NMR) and spectrometric (MALDI-TOF-MS) methods. The next stage of the research involved studying the thermogravimetric properties of the borasilsesquioxanes. By analyzing the different stages of decomposition using spectroscopic techniques (NMR, ATR-FTIR, Raman) and microscopic imaging, it was found that the structure of the borasilsesquioxanes changed during the pyrolysis process and polymer compounds were formed.
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Affiliation(s)
- Miłosz Frydrych
- Faculty of Chemistry, Adam Mickiewicz University, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland (B.M.)
- Centre for Advanced Technologies, Adam Mickiewicz University, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland;
| | - Bogna Sztorch
- Centre for Advanced Technologies, Adam Mickiewicz University, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland;
| | - Robert E. Przekop
- Centre for Advanced Technologies, Adam Mickiewicz University, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland;
| | - Bogdan Marciniec
- Faculty of Chemistry, Adam Mickiewicz University, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland (B.M.)
- Centre for Advanced Technologies, Adam Mickiewicz University, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland;
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3
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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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4
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Aguado S, Vicent DJ, Casarrubios L, Ramírez de Arellano C, Sierra MA. Two Complementary Approaches to Silicon-Supported Soluble [FeFe]-Hydrogenase Mimics. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergio Aguado
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
- Centro de Innovación en Química Avanzada (ORFEO−CINQA), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Diego J. Vicent
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
- Centro de Innovación en Química Avanzada (ORFEO−CINQA), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Luis Casarrubios
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
- Centro de Innovación en Química Avanzada (ORFEO−CINQA), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Carmen Ramírez de Arellano
- Departamento de Química Orgánica, Universidad de Valencia, 46100 Valencia, Spain
- Centro de Innovación en Química Avanzada (ORFEO−CINQA), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Miguel A. Sierra
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
- Centro de Innovación en Química Avanzada (ORFEO−CINQA), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
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5
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Radiation synthesis of polyhedral oligomeric silsesquioxanes (POSS) gel polymers. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110251] [Citation(s) in RCA: 1] [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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6
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Liu S, Yan J, Zhang Q, Yan Y. Acyclic Diene Metathesis (ADMET) as Powerful Tool for Functional Polymers with Versatile Architectures. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02386-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Meng X, Liu Y, Wang S, Ye Y, Song X, Liang Z. Post-crosslinking of conjugated microporous polymers using vinyl polyhedral oligomeric silsesquioxane for enhancing surface areas and organic micropollutants removal performance from water. J Colloid Interface Sci 2022; 615:697-706. [DOI: 10.1016/j.jcis.2022.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/03/2022] [Accepted: 02/04/2022] [Indexed: 10/19/2022]
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8
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Preparation of Carbon nanotubes and Polyhedral oligomeric-Reinforced Molecularly Imprinted Polymer Composites for Drug Delivery of Gallic acid. Int J Pharm 2022; 615:121476. [PMID: 35038559 DOI: 10.1016/j.ijpharm.2022.121476] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 01/05/2022] [Accepted: 01/11/2022] [Indexed: 01/20/2023]
Abstract
In this paper, an enhanced imprinting effect of utilizing single wall carbon nanotubes (SWCNT) and polyhedral oligomeric silsesquioxanes (POSS) was suggested to improve drug delivery. The combination of 1-butyl-3-methylimidazoliumtetrafluoroborate ([BMIM]BF4), tetrahydrofuran (THF) and choline chloride-ethylene glycol (ChCl / EG) were used as a ternary porogen to prepare molecularly imprinted polymer (MIPs) doped with SWCNT and POSS. In the presence of gallic acid (GAL), 4-vinylpyridine (4-VP) and ethylene glycol dimethacrylate (EDMA) was functional monomer and crosslinker, respectively. The structure and morphological parameters of the MIP composite, such as surface area and pore size distribution, were also measured. In the studies of in vitro releases, superior controlled release characteristics can be achieved due to the enhanced imprinting effect of the MIPs doped with POSS and SWCNT. In vivo release studies showed that the POSS-SWCNT MIP had the maximum plasma concentration after 4 hours. Compared with the control MIPs and NIP, the POSS-SWCNT MIP displayed a maximum AUC0-9 of 544.73 (ng h mL-1), while only 327.48, 212.91, 230.35 and 275.13 (ng h mL-1) for the POSS MIP, SWCNT MIP, MIP and POSS-SWCNT NIP, respectively.
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9
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Novel Silsesquioxane-Derived Boronate Esters-Synthesis and Thermal Properties. Molecules 2021; 26:molecules26144107. [PMID: 34299387 PMCID: PMC8306940 DOI: 10.3390/molecules26144107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 11/20/2022] Open
Abstract
The functionalization of mono- and octahydrospherosilicate with vinylboranes and allylboranes via hydrosilylation reaction in the presence of a Karstedt’s platinum (0) catalyst is presented. This is the catalytic route to obtain a new class of silsesquioxanes containing boron atoms in their structure in high yields (>90%) and with satisfactory selectivity. The obtained compounds were fully characterized by spectroscopic (1H, 13C, 29Si NMR) and spectrometric methods (MALDI-TOF-MS), as well as thermal analysis (TGA). The obtained compounds were subjected to thermal tests, characterizing the processes of melting, thermal evaporation, sublimation and thermal decomposition.
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10
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Chaiprasert T, Liu Y, Takeda N, Unno M. Vinyl-Functionalized Janus Ring Siloxane: Potential Precursors to Hybrid Functional Materials. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2014. [PMID: 33923699 PMCID: PMC8073502 DOI: 10.3390/ma14082014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 11/17/2022]
Abstract
A vinyl-functionalized all-cis-tetrasiloxycyclotetrasiloxane [ViSi(OSiMe2H)O]4 (Vi = vinyl group) Janus precursor was prepared from potassium cyclotetrasiloxane silanolate. The Janus precursor was selectively modified at its dimethylhydrosilyl groups [-SiMe2H] via the Piers-Rubinsztajn reaction to obtain a family of new tetravinyl-substituted Janus rings [ViSi(OR')O]4 containing various functional groups in moderate yields. Remarkably, the tetravinyl groups on the structure remained intact after modification by the Piers-Rubinsztajn reaction. Since these synthesized compounds possess multiple functional groups (up to eight per molecule), they are potential precursors for advanced hybrid organic-inorganic functional materials.
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Affiliation(s)
| | | | | | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan; (T.C.); (Y.L.); (N.T.)
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11
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Zhang C, Zhang J, Xu T, Sima H, Hou J. Effects of Polyhedral Oligomeric Silsesquioxane (POSS) on Thermal and Mechanical Properties of Polysiloxane Foam. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4570. [PMID: 33066577 PMCID: PMC7602122 DOI: 10.3390/ma13204570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 01/04/2023]
Abstract
The thermal and mechanical properties of polysiloxane foam are greatly improved by the addition of acrylolsobutyl polyhedral oligomeric silsesquioxane (MA0701, hereinafter referred to as MAPOSS), which has double bonds. The morphologies and properties of the polysiloxane composite foam were characterized. The average cell diameter of the composite foams decreased, while the cell density increased with increasing MAPOSS. Meanwhile, MAPOSS can enhance thermal conductivity and thermal stability. Thermal conductivity increased by 25%, and the temperature at the maximum weight loss rate increased from 556 °C to 599 °C. In addition, MAPOSS also promoted heterogeneous nucleation by functioning as a nucleating agent, which can increase cell density to improve the mechanical properties. The compressive strength of the composite foam increased by 170% compared with that of pure foam. In the composite, MAPOSS increased the cross-linking density by acting as a physical cross-linking point and limited the movement of the segments.
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Affiliation(s)
| | | | | | | | - Jiazi Hou
- School of Materials Science and Engineering, Jilin University, Chang Chun 130022, China; (C.Z.); (J.Z.); (T.X.); (H.S.)
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12
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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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13
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Formation of Bifunctional Octasilsesquioxanes via Silylative Coupling and Cross-Metathesis Reaction. MATERIALS 2020; 13:ma13183966. [PMID: 32911628 PMCID: PMC7557879 DOI: 10.3390/ma13183966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/04/2020] [Accepted: 09/06/2020] [Indexed: 11/16/2022]
Abstract
Bifunctional silsesquioxanes create an attractive group of compounds with a wide range of potential applications, and recently they have gained much interest. They are known to be obtained mainly via hydrosilylation, but we disclose novel synthetic protocols based on different but complementary reactions, i.e., cross-metathesis (CM) and silylative coupling (SC). A series of cubic T8 type silsesquioxane derivatives with a broad scope of styryl substituents were synthesized in a one-pot procedure and characterized by spectroscopic and spectrometric methods. All of the new compounds can be obtained in a one-pot manner, which has an attractive impact on the synthetic procedure, as it is economic in terms of the isolation of intermediate products. Additionally, the methodology disclosed here enables the (E)-stereoselective introduction of styrenes derivative to the cubic T8 type core. The presented compounds can be interesting precursors for a further functionalization that may significantly increase the possibility of their application in the design and synthesis of new functional materials.
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14
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Kaźmierczak J, Lewandowski D, Hreczycho G. B(C 6F 5) 3-Catalyzed Dehydrocoupling of POSS Silanols with Hydrosilanes: A Metal-Free Strategy for Effecting Functionalization of Silsesquioxanes. Inorg Chem 2020; 59:9206-9214. [PMID: 32510206 DOI: 10.1021/acs.inorgchem.0c01125] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report a highly effective metal-free catalytic procedure for the functionalization of silsesquioxanes via dehydrocoupling of various POSS silanols with hydrosilanes in the presence of commercially available tris(pentafluorophenyl)borane B(C6F5)3. This approach enables the unprecedented one-pot synthesis of valuable silsesquioxane derivatives under mild conditions, with no corrosive byproducts formed in the process.
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Affiliation(s)
- Joanna Kaźmierczak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Dariusz Lewandowski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Grzegorz Hreczycho
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
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15
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Grzelak M, Januszewski R, Marciniec B. Synthesis and Hydrosilylation of Vinyl-Substituted Open-Cage Silsesquioxanes with Phenylsilanes: Regioselective Synthesis of Trifunctional Silsesquioxanes. Inorg Chem 2020; 59:7830-7840. [PMID: 32436707 PMCID: PMC7588036 DOI: 10.1021/acs.inorgchem.0c00947] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
![]()
Herein, we report
an efficient synthesis and functionalization
of trifunctional open-cage-type silsesquioxanes. The method proposed
has been successfully applied for the synthesis of a library of incompletely
condensed silsesquioxanes with vinyldiorganosilyl functional groups,
which allows further modification. Detailed studies of hydrosilylation
of sterically different open-cage vinylsilsesquioxanes with a wide
spectrum of phenylsilanes catalyzed by platinum and rhodium compounds
are also reported. The influence of the reaction parameters, types
of reagents, and catalysts employed on the efficiency of the process
was examined. Optimization of the process based on the above results
permitted the design of a very attractive method for the synthesis
of multifunctionalized silsesquioxanes with excellent yields and regioselectivity.
Moreover, the results allowed the choice of the most efficient catalyst
whose application led to the selective formation of substituted open-cage
silsesquioxanes. These new compounds have been fully characterized
and studied in terms of their thermal properties. The first example of a fully specified synthetic protocol
allowing selective modification of trivinyl-substituted open-cage
silsesquioxanes with silanes via platinum-catalyzed hydrosilylation
is presented.
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Affiliation(s)
- Magdalena Grzelak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Rafał Januszewski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Bogdan Marciniec
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
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16
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Dragutan V, Dragutan I, Demonceau A, Delaude L. Combining enyne metathesis with long-established organic transformations: a powerful strategy for the sustainable synthesis of bioactive molecules. Beilstein J Org Chem 2020; 16:738-755. [PMID: 32362948 PMCID: PMC7176922 DOI: 10.3762/bjoc.16.68] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 04/01/2020] [Indexed: 12/20/2022] Open
Abstract
This account surveys the current progress on the application of intra- and intermolecular enyne metathesis as main key steps in the synthesis of challenging structural motifs and stereochemistries found in bioactive compounds. Special emphasis is placed on ruthenium catalysts as promoters of enyne metathesis to build the desired 1,3-dienic units. The advantageous association of this approach with name reactions like Grignard, Wittig, Diels–Alder, Suzuki–Miyaura, Heck cross-coupling, etc. is illustrated. Examples unveil the generality of such tandem reactions in providing not only the intricate structures of known, in vivo effective substances but also for designing chemically modified analogs as valid alternatives for further therapeutic agents.
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Affiliation(s)
- Valerian Dragutan
- Institute of Organic Chemistry of the Romanian Academy, Bucharest, 060023, Romania
| | - Ileana Dragutan
- Institute of Organic Chemistry of the Romanian Academy, Bucharest, 060023, Romania
| | - Albert Demonceau
- Laboratory of Catalysis, Institut de Chimie (B6a), Allée du six Août 13, Université de Liège, 4000 Liège, Belgium
| | - Lionel Delaude
- Laboratory of Catalysis, Institut de Chimie (B6a), Allée du six Août 13, Université de Liège, 4000 Liège, Belgium
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17
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Grela K, Kajetanowicz A. Progress in metathesis chemistry. Beilstein J Org Chem 2019; 15:2765-2766. [PMID: 31807209 PMCID: PMC6880830 DOI: 10.3762/bjoc.15.267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 10/30/2019] [Indexed: 11/23/2022] Open
Affiliation(s)
- Karol Grela
- Faculty of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warsaw, Poland
| | - Anna Kajetanowicz
- Faculty of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warsaw, Poland
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