Synthesis of environmentally friendly, magnetic acid-type calix[4]arene catalyst for obtaining Biginelli adducts

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dc.creatorCarlos Henrique Callegario Zacchi
dc.creatorSara Silveira Vieira
dc.creatorJose Domingos Ardisson
dc.creatorMaria Helena Araujo
dc.creatorÂngelo de Fátima
dc.date.accessioned2024-10-25T12:14:58Z
dc.date.accessioned2025-09-09T01:05:03Z
dc.date.available2024-10-25T12:14:58Z
dc.date.issued2019
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipOutra Agência
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1016/j.jscs.2019.05.005
dc.identifier.issn1319-6103
dc.identifier.urihttps://hdl.handle.net/1843/77648
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Saudi Chemical Society
dc.rightsAcesso Aberto
dc.subjectNanopartículas
dc.subjectCalixarenos
dc.subjectÓxidos de ferro
dc.subjectCatalisadores
dc.subjectCatálise
dc.subjectSílica
dc.subjectPrecipitação (Química)
dc.subject.otherFe3O4 nanoparticles
dc.subject.otherP-sulfonic acid calix[4]arene
dc.subject.otherMagnetic acid catalyst
dc.subject.otherBiginelli adducts
dc.titleSynthesis of environmentally friendly, magnetic acid-type calix[4]arene catalyst for obtaining Biginelli adducts
dc.typeArtigo de periódico
local.citation.epage1069
local.citation.issue8
local.citation.spage1060
local.citation.volume23
local.description.resumoAn immobilized p-sulfonic acid calix[4]arene was synthesized on the surface of silica-coated Fe3O4 nanoparticles. Due to the combination of the magnetic recovery and the acid properties, it acted as a robust, safe and environmentally friendly catalyst for the one-pot synthesis of Biginelli adducts under microwave irradiation and solvent-free conditions. A series of Biginelli adducts were obtained in moderate to excellent yields, and most importantly, the catalyst could be easily recovered by an external magnet and reused five times without significant loss of catalytic activity (ca. 80% yield for all reuses using 0.64 mol% of the catalyst).
local.identifier.orcidhttps://orcid.org/0000-0003-0751-6221
local.identifier.orcidhttps://orcid.org/0000-0002-5615-3482
local.identifier.orcidhttps://orcid.org/0000-0002-2609-0281
local.identifier.orcidhttps://orcid.org/0000-0003-2344-5590
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S1319610319300523

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