Catalytic properties of the homologous series of the β-brominated-pyrrole manganese(III) tetraphenylporphyrins

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• 作者：Saeed Rayati ; ^{rayati@kntu.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; ^{srayati@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Fatemeh Nejabat
• 关键词：Catalytic oxidation ; Olefin ; Alkane ; Urea-hydrogen peroxide (UHP) ; Manganese porphyrin
• 刊名：Polyhedron
• 出版年：2016
• 出版时间：28 January 2016
• 年：2016
• 卷：104
• 期：Complete
• 页码：52-57
• 全文大小：2273 K

文摘

A homologous series of β-brominated Mn-porphyrins were prepared and their catalytic activities were investigated in the oxidation of cyclooctene with urea hydrogen peroxide (UHP). The highest conversion of cyclooctene with UHP in ethanol was obtained in the presence of β-tetra-brominated meso-tetraphenylporphyrinatomanganese(III) acetate (MnTPPBr₄(OAc)). Therefore MnTPPBr₄(OAc) has been selected for oxidation of different alkenes and alkanes. In order to achieve maximum conversion, the effect of different parameters such as solvent, temperature, amount of oxidant, acetic acid as oxidant activator and also the amount of axial base as co-catalyst were investigated.