Dual catalytic performance of arene-ruthenium amine complexes for norbornene ring-opening metathesis and methyl methacrylate atom-transfer radical polymerizations

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Federal de Uberlândia (UFU)-
Autor(es): dc.contributorUniversidade Federal do Triangulo Mineiro-
Autor(es): dc.contributorUniversidade Federal de Goiás (UFG)-
Autor(es): dc.creatorCruz, Thais R. [UNESP]-
Autor(es): dc.creatorSilva, Eliada A.-
Autor(es): dc.creatorOliveira, Douglas P. [UNESP]-
Autor(es): dc.creatorMartins, Daniele M.-
Autor(es): dc.creatorGois, Patrik D.S. [UNESP]-
Autor(es): dc.creatorMachado, Antonio E.H.-
Autor(es): dc.creatorMaia, Pedro Ivo S.-
Autor(es): dc.creatorGoi, Beatriz E. [UNESP]-
Autor(es): dc.creatorLima-Neto, Benedito S.-
Autor(es): dc.creatorCarvalho-Jr, Valdemiro P. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:24:54Z-
Data de disponibilização: dc.date.available2022-02-22T00:24:54Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/aoc.5602-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198556-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198556-
Descrição: dc.descriptionArene ruthenium(II) complexes bearing the cyclic amines RuCl2(η6-p-cymene)(pyrrolidine)] (1), [RuCl2(η6-p-cymene)(piperidine)] (2), and [RuCl2(η6-p-cymene)(peridroazepine)] (3) were successfully synthesized. Complexes 1–3 were fully characterized by means of Fourier transform infrared, UV–visible, and NMR spectroscopy, elemental analysis, cyclic voltammetry, computational methods, and one of the complexes was further studied by single crystal X-ray crystallography. These compounds were evaluated as catalytic precursors for ring-opening metathesis polymerization (ROMP) of norbornene (NBE) and atom-transfer radical polymerization (ATRP) of methyl methacrylate (MMA). NBE polymerization via ROMP was evaluated using complexes 1–3 as precatalysts in the presence of ethyl diazoacetate (EDA) under different [NBE]/[EDA]/[Ru] ratios, temperatures (25 and 50°C), and reaction times (5–60 min). The highest yields of polyNBE were obtained with [NBE]/[EDA]/[Ru] = 5000/28/1 for 60 min at 50°C. MMA polymerization via ATRP was conducted using 1–3 as catalysts in the presence of ethyl-α-bromoisobutyrate (EBiB) as initiator. The catalytic tests were evaluated as a function of the reaction time using the initial molar ratio of [MMA]/[EBiB]/[Ru] = 1000/2/1 at 95°C. The increase in molecular weight as function of time indicates that complexes 1–3 were able to mediate the MMA polymerization with an acceptable rate and some level of control. Differences in the rate of polymerization were observed in the order 3 > 2 > 1 for the ROMP and ATRP.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionFaculdade de Ciências e Tecnologia UNESP – Univ. Estadual Paulista-
Descrição: dc.descriptionInstituto de Química de São Carlos Universidade de São Paulo-
Descrição: dc.descriptionInstituto de Química Universidade Federal de Uberlândia, P.O. Box 593-
Descrição: dc.descriptionDepartamento de Química Universidade Federal do Triangulo Mineiro-
Descrição: dc.descriptionPrograma de Pós‐Graduação em Ciências Exatas e Tecnológicas at Universidade Federal de Goiás-
Descrição: dc.descriptionFaculdade de Ciências e Tecnologia UNESP – Univ. Estadual Paulista-
Descrição: dc.descriptionFAPESP: 2017/06329-5-
Descrição: dc.descriptionFAPESP: 2018/06340-1-
Idioma: dc.languageen-
Relação: dc.relationApplied Organometallic Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectATRP-
Palavras-chave: dc.subjectolefin-
Palavras-chave: dc.subjectp-cymene-
Palavras-chave: dc.subjectROMP-
Palavras-chave: dc.subjectruthenium-
Título: dc.titleDual catalytic performance of arene-ruthenium amine complexes for norbornene ring-opening metathesis and methyl methacrylate atom-transfer radical polymerizations-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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