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首页> 外文期刊>Catalysis Communications >Electron deficient manganese(III) corrole catalyzed oxidation of alkanes and alkylbenzenes at room temperature
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Electron deficient manganese(III) corrole catalyzed oxidation of alkanes and alkylbenzenes at room temperature

机译：室温下缺电子的锰（III）腐蚀烷烃和烷基苯的氧化

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At room temperature electron deficient manganese (III) corrole complexes (1-3) were successfully employed as catalysts in the oxidation of alkanes and alkylbenzenes using m-chloroperbenzoic acid (m-CPBA) as the terminal oxidant. Adamantane has been selectively hydroxylated to adamantane 1-ol and 2-ol with higher preference for the tertiary position. Cyclohexane has also been oxidized. The present oxidizing system also oxidizes toluene, ethylbenzene and diphenylmethane. High valent oxomanganese(V) species has been proposed to be the active oxidant. The high-valent oxomanganese(V) corrole undergoes hydrogen atom transfer (HAT) reaction with 2,4,6-tri-t-butylphenol (TTBP) resulting in the formation of oxidized phenoxyl radicals. Kinetic studies have led to the determination of second-order rate constants for the hydrogen atom transfer reactions. The kinetic experiments reveal a first order reaction rate dependence on the concentration of catalyst as well as on that of the oxidant.
机译：在室温下，使用间氯过苯甲酸（m-CPBA）作为末端氧化剂，将缺电子的锰（III）配合物（1-3）成功用作烷烃和烷基苯氧化的催化剂。金刚烷已被选择性地羟基化为金刚烷1-醇和2-醇，对叔位置具有更高的偏好。环己烷也已被氧化。本氧化系统还氧化甲苯，乙苯和二苯甲烷。已提出高价氧锰（V）物质是活性氧化剂。高价氧锰（V）腐蚀液与2,4,6-三叔丁基苯酚（TTBP）发生氢原子转移（HAT）反应，导致氧化的苯氧基自由基的形成。动力学研究已经确定了氢原子转移反应的二级速率常数。动力学实验表明，一级反应速率取决于催化剂的浓度以及氧化剂的浓度。

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