Data di Pubblicazione:
2010
Citazione:
Direct Green Iodination of Phenol over Solid Acids / P. Carniti, S. Colonna, A. Gervasini. - In: CATALYSIS LETTERS. - ISSN 1011-372X. - 137:1-2(2010), pp. 55-62. [10.1007/s10562-010-0283-6]
Abstract:
Examination of several solid acid catalysts of different nature (acid resins, zeolites, mixed oxides, Nb-oxide, and Nb-phosphate) was performed for the direct iodination reaction of phenol by using molecular iodine. The experiments were carried out in mild and green conditions (50 °C at ambient pressure) in methanol in the presence of H2O2 as oxidant agent. Iodine was introduced in reduced amount, stoichiometric for the formation of di-iodinated phenol, to obtain information on the regio-selectivity of the iodination reaction. The catalysts proved to be all efficient for the introduction of iodine into the aromatic substrate, yielding mono-, di-, and tri-iodo derivates. Different selectivity distributions to the iodo-compound formed were observed over the different catalysts. Catalysts could be grouped into distinct families on the basis of their ortho/para orientation.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Iodination; Phenol; Solid acids
Elenco autori:
P. Carniti, S. Colonna, A. Gervasini
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