Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/111857
DC Field | Value | Language |
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dc.contributor.author | Mahmoud, Abdallah G. | - |
dc.contributor.author | Librando, Ivy L. | - |
dc.contributor.author | Paul, Anup | - |
dc.contributor.author | Carabineiro, Sónia A. C. | - |
dc.contributor.author | Ferraria, Ana Maria | - |
dc.contributor.author | Botelho do Rego, Ana Maria | - |
dc.contributor.author | Guedes da Silva, M. Fátima C. | - |
dc.contributor.author | Geraldes, Carlos F. G. C. | - |
dc.contributor.author | Pombeiro, Armando J. L. | - |
dc.date.accessioned | 2024-01-12T11:41:06Z | - |
dc.date.available | 2024-01-12T11:41:06Z | - |
dc.date.issued | 2023 | - |
dc.identifier.issn | 09205861 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/111857 | - |
dc.description.abstract | New organotin compounds with general formula [(PTA-CH2-C6H4-p-COO)SnR3]Br (where R is Me for 3 and Ph for 4; PTA = 1,3,5-triaza-7-phosphaadamantane), bearing the methylene benzoate PTA derivative, were synthesized through a mild two-step process. The compounds were characterized by Fourier transform infrared spectroscopy, electrospray ionization mass spectrometry, elemental analysis and nuclear magnetic resonance spectroscopy (NMR). They were heterogenized on commercially available activated carbon (AC) and multiwalled carbon nanotubes (CNT), as well as on their chemically modified analogues. The obtained materials were characterized by scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. Complex 3 supported on activated carbon (3-AC) was found to be an active and recyclable catalyst for the cyanosilylation of several aromatic and aliphatic aldehydes. Using 3-AC with a low loading of 0.1 mol% several substrates were quantitatively converted, within just 5 min at 50 ◦C and under microwave irradiation in solvent-free conditions. Multinuclear NMR analysis suggested a mechanism that potentially involves a double activation process, where the nucleophilic phosphorus at the PTA derivative acts as a Lewis base and the Sn(IV) metal centre as a Lewis acid. | pt |
dc.description.sponsorship | The work was also funded by national funds through FCT, under the Scientific Employment Stimulus-Institutional Call (CEEC-INST/ 00102/2018). AGM is grateful to Associaçao do Instituto Superior Tecnico para a Investigaçao e Desenvolvimento (IST-ID) for his post-doctoral fellowship through grant no. BL133/2021-IST-ID. ILL acknowledges the CATSUS PhD Program from FCT for her grant PD/BD/135555/2018. AP and AMF are grateful to FCT and Instituto Superior T´ecnico (IST), Portugal through DL/57/2017 (Contract no. IST-ID/197/2019 and ISTID/ 131/2018). This publication is also supported by the RUDN University Strategic Academic Leadership Program (recipient AJLP, preparation). | pt |
dc.language.iso | eng | pt |
dc.publisher | Elsevier | pt |
dc.relation | UIDB/00100/2020 | pt |
dc.relation | UIDP/00100/2020 | pt |
dc.relation | LA/P/0056/2020 | pt |
dc.relation | UIDB/04565/2020 | pt |
dc.relation | UIDP/04565/2020 | pt |
dc.relation | LA/P/0140/2020 | pt |
dc.relation | UIDB/50020/2020 | pt |
dc.relation | UIDP/50020/2020 | pt |
dc.relation | UIDB/50006/2020 | pt |
dc.relation | UIDP/50006/2020 | pt |
dc.relation | UIDB/00313/2020 | pt |
dc.relation | UIDP/00313/2020 | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | pt |
dc.subject | Cyanosilylation | pt |
dc.subject | Carbon materials | pt |
dc.subject | Heterogeneous catalysis | pt |
dc.subject | 1,3,5-triaza-7-phosphaadamantane | pt |
dc.subject | Microwave | pt |
dc.subject | Tetrel σ-hole bond | pt |
dc.title | Novel organotin-PTA complexes supported on mesoporous carbon materials as recyclable catalysts for solvent-free cyanosilylation of aldehydes | pt |
dc.type | article | - |
degois.publication.firstPage | 114270 | pt |
degois.publication.title | Catalysis Today | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1016/j.cattod.2023.114270 | pt |
degois.publication.volume | 423 | pt |
dc.date.embargo | 2023-01-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.openairetype | article | - |
item.fulltext | Com Texto completo | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.project.grantno | Centro de Química Estrutural | - |
crisitem.project.grantno | Institute for Bioengineering and Biosciences -iBB | - |
crisitem.project.grantno | Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials | - |
crisitem.project.grantno | Associated Laboratory for Green Chemistry - Clean Technologies and Processes- REQUIMTE | - |
crisitem.project.grantno | Coimbra Chemistry Center | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0002-0837-8329 | - |
Appears in Collections: | I&D CQC - Artigos em Revistas Internacionais FCTUC Ciências da Vida - Artigos em Revistas Internacionais |
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Novel organotin-PTA complexes supported on mesoporous carbon materials as recyclable catalysts for solvent-free cyanosilylation of aldehydes.pdf | 4.95 MB | Adobe PDF | View/Open |
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