Oxidized multiwalled nanotubes as efficient carbocatalyst for the general synthesis of azines
Entity
UAM. Departamento de Química OrgánicaPublisher
ElsevierDate
2022-01-19Citation
10.1016/j.jcat.2022.01.009
Journal of Catalysis 406 (2022): 174-183
ISSN
0021-9517 (print); 1090-2694 (online)DOI
10.1016/j.jcat.2022.01.009Funded by
Financial support was provided by the European Research Council (ERC-CoG, Contract Number: 647550, ERC-PoC, Contract No. 861930), the Spanish Government (RTI2018-095038-B-I00), the ‘Comunidad de Madrid’ and European Structural Funds (S2018/NMT-4367) and proyectos sinérgicos I+D (Y2020/NMT6469). M.B. wishes to thank the Spanish Government for a Juan de la Cierva contract (IJC2019-042157-I)Project
info:eu-repo/grantAgreement/EC/H2020/647550/EU//UNBICAT; info:eu-repo/grantAgreement/EC/H2020/861930/EU//PhoMatFlow; Gobierno de España. RTI2018-095038-B-I00Editor's Version
https://doi.org/10.1016/j.jcat.2022.01.009Subjects
Azines; Carbocatalysis; Recyclability; Biological Relevant Molecules; Oxidized Carbon Nanotubes; QuímicaRights
© 2022 Elsevier Inc.Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
The carbocatalytic synthesis of azines (N-N linked diimines) by mild-oxidized multiwalled carbon nanotubes catalyst (oxMWNT) is presented. The material, just with a 5 %wt. loading, is able to carry out a smooth room-temperature metal-free condensation of aldehydes and hydrazine, without external additives, to obtain a wide library of symmetric and also asymmetric azines in excellent yields, even in gram scale, with an excellent selectivity for aromatic substrates. This methodology allows the synthesis of azines with application in nonlinear optics, and the organic materials and biological active compounds crafting. oxMWNT catalysed the reaction in just 3 h with full recyclability upon the recovery of the catalyst. In addition, due to the inherent oxMWNT oxidative capacity in the presence of nitric acid, we have also developed the one-pot synthesis of azines starting from alcohols
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Google Scholar:Valle-Amores, Miguel A.
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Blanco Fernández, Matías
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Agnoli, Stefano
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Fraile Carrasco, Alberto
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Alemán Lara, José Julián
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