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Síntese e caracterização de uma nova meso-porfirina e derivados metalados

2013; UNIVERSIDADE ESTADUAL DE LONDRINA; Volume: 34; Issue: 2 Linguagem: Inglês

10.5433/1679-0375.2013v34n2p171

ISSN

1679-0375

Autores

Paulo Cesar Bega, Jacqueline Aparecida Marques,

Tópico(s)

Metal complexes synthesis and properties

Resumo

There has been a growing interest in the properties of substituted meso-tetraarylporphyrins and metallo porphyrins as catalysts for oxidation of hydrocarbons, oxygen detection, among others. This work describes the synthesis of a new porphyrin, 5,10,15,20-tetrakis(4-butoxy-3-methoxyphenyl)porphyrin, and its metallo complexes. Herein it was used a readily available reactant, vanillin, as starting material which was submitted to alkylation with n-bromobutane affording the synthetic precursor. The desired porphyrin was obtained by reacting the O-alkylated aldehyde with pyrrole in the presence of propionic acid (Alder-Longo method). The purified porphyrin was then subjected to the metallation process using iron (II) and manganese (II) salts. The synthesized compounds were characterized by IR, UV-Vis, NMR and EPR spectroscopy.

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