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Título: Cellulose oxidation and the use of carboxyl cellulose metal complexes in heterogeneous catalytic systems to promote Suzuki-Miyaura coupling and C-O bond formation reaction
Autor(es): Martins, Guilherme B. C.
Santos, Marcelo R. dos
Rodrigues, Marcus V. R.
Sucupira, Renata Rodrigues
Meneghetti, Luisa
Monteiro, Adriano L.
Suarez, Paulo Anselmo Ziani
Assunto: Oxidação
Ligas (Metalurgia)
Reações químicas
Data de publicação: Nov-2017
Editora: Sociedade Brasileira de Química
Referência: MARTINS, Guilherme B. C. et al. Cellulose oxidation and the use of carboxyl cellulose metal complexes in heterogeneous catalytic systems to promote Suzuki-Miyaura coupling and C-O bond formation reaction. Journal of the Brazilian Chemical Society, São Paulo, v. 28, n. 11, p. 2064-2072, nov. 2017. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017001102064&lng=en&nrm=iso>. Acesso em: 1 fev. 2018. doi: http://dx.doi.org/10.21577/0103-5053.20170051.
Abstract: This work shows the modification of microcrystalline cellulose by the selective oxidation of primary hydroxyl groups to carboxylate groups by a 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated system and its application as a heterogeneous ligand by ionic exchange with catalytic metals ions such as palladium, nickel and copper. Afterwards is described the application of the synthesized material as catalyst in coupling reactions such as Suzuki-Miyaura coupling and C−O bond formation reaction in different conditions, which are of great importance for the synthesis of drugs, natural products and new materials such as dendrimers, liquid crystals and polymers with magnetic and optical properties. The carboxyl cellulose matrix shows to have superior catalytic results as a ligand for all coupling reactions. Can be also highlighted the affinity of the carboxyl cellulose ligand in polar solvents such as water and alcohols and its application in mild conditions.
Licença: Journal of the Brazilian Chemical Society - This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0). Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017001102064&lng=en&nrm=iso. Acesso em: 1 fev. 2018.
DOI: http://dx.doi.org/10.21577/0103-5053.20170051
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