The preparation of benzyl esters using stoichiometric niobium (V) chloride versus niobium grafted SiO2 catalyst: A comparison study

dc.contributor.authorBarbosa, Sandro L.
dc.contributor.authorLima, Camila D.
dc.contributor.authorAlmeida, Melina A.R.
dc.contributor.authorMourão, Larissa S.
dc.contributor.authorOttone, Myrlene
dc.contributor.authorNelson, David L.
dc.contributor.authorKlein, Stanlei I. [UNESP]
dc.contributor.authorZanatta, Lucas D.
dc.contributor.authorClososki, Giuliano C.
dc.contributor.authorCaires, Franco J.
dc.contributor.authorNassar, Eduardo J.
dc.contributor.authorHurtado, Gabriela R. [UNESP]
dc.contributor.institutionUniversidade Federal de Viçosa (UFV)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade de Franca
dc.date.accessioned2018-12-11T17:18:34Z
dc.date.available2018-12-11T17:18:34Z
dc.date.issued2018-03-01
dc.description.abstractTwo solvent free methods of a one-to-one alcohol/acid mol ratio synthesis of benzyl esters of the formic, acetic, benzoic, salicylic, nicotinic, and oxalic acids are described. The stoichiometric reactions used 1.5 mol ratio solid NbCl5 as the reagent and required from two to three hours for completion at room temperature; for the catalytic processes, NbCl5 was grafted directly, at room temperature, onto a silica gel of specific area of 507 m2g−1, produced from construction sand and sodium carbonate, forming a 5.4% Nb w/w SiO2-Nb gel with a specific area of 412 m2g−1. At 10% w/w catalyst/alcohol ratio, this SiO2-Nb catalyst gave similarly very good yields but required from 6 to 9 hours at the reflux temperature of the slurry. The catalyst could be re-used three times.en
dc.description.affiliationDepartment of Pharmacy Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM Campus JK, Rodovia MGT 367 - Km 583, no 5000, Alto da Jacuba
dc.description.affiliationDepartment of General and Inorganic Chemistry Institute of Chemistry São Paulo State University - Unesp, R. Prof. Francisco Degni, no 55, Quitandinha
dc.description.affiliationBioinorganic Chemistry Laboratory Department of Chemistry Faculdade de Filosofia Ciências e Letras de Ribeirão Preto e University of São Paulo, Av. Bandeirantes 3900
dc.description.affiliationDepartment of Physics and Chemistry Faculdade de Ciências Farmacêuticas de Ribeirão Preto Universidade de São Paulo - USP, Av. Do Café s/n, 14040-903
dc.description.affiliationUniversidade de Franca, Av. Dr. Armando Salles Oliveira 201, C.P. 82
dc.description.affiliationUniversidade Estadual Paulista “Júlio de Mesquita Filho” - Unesp Instituto de Ciência e Tecnologia, Rodovia Presidente Dutra Km 138
dc.description.affiliationUnespDepartment of General and Inorganic Chemistry Institute of Chemistry São Paulo State University - Unesp, R. Prof. Francisco Degni, no 55, Quitandinha
dc.description.affiliationUnespUniversidade Estadual Paulista “Júlio de Mesquita Filho” - Unesp Instituto de Ciência e Tecnologia, Rodovia Presidente Dutra Km 138
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.identifierhttp://dx.doi.org/10.1016/j.heliyon.2018.e00571
dc.identifier.citationHeliyon, v. 4, n. 3, 2018.
dc.identifier.doi10.1016/j.heliyon.2018.e00571
dc.identifier.file2-s2.0-85043987554.pdf
dc.identifier.issn2405-8440
dc.identifier.scopus2-s2.0-85043987554
dc.identifier.urihttp://hdl.handle.net/11449/176016
dc.language.isoeng
dc.relation.ispartofHeliyon
dc.relation.ispartofsjr0,355
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectOrganic chemistry
dc.titleThe preparation of benzyl esters using stoichiometric niobium (V) chloride versus niobium grafted SiO2 catalyst: A comparison studyen
dc.typeArtigo
unesp.author.orcid0000-0002-0294-5345[1]
unesp.author.orcid0000-0001-7026-8502[7]

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Carregando...
Imagem de Miniatura
Nome:
2-s2.0-85043987554.pdf
Tamanho:
993.04 KB
Formato:
Adobe Portable Document Format
Descrição: