Selective Oxidation of Ethylbenzene with Hydrogen Peroxide Catalyzed by 5,7-Dibromo-8-quinolinolato Manganese Complexes
Selective Oxidation of Ethylbenzene with Hydrogen Peroxide Catalyzed by 5,7-Dibromo-8-quinolinolato Manganese Complexes
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5,7-二溴-8-喹啉锰配合物催化过氧化氢选择性氧化乙苯
DOI：
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发表时间：
2010
影响因子：
10.9
通讯作者：
He Xiang-Ling
中科院分区：
文献类型：
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作者：
Yin Du-Lin;Fu Zai-Hui;Liu Ya-Chun;Lu Chun-Li;Qin Jin-Wei;Liu Feng-Lan;He Xiang-Ling
合成了四齿（Q2MnII）和六齿（Q3MnIII）两种5，7-二溴-8-羟基喹啉锰配合物，并用傅里叶变换红外光谱（FT-IR）进行了表征，发现这两种锰配合物与NH4OAC和HOAc一起，在丙酮中有效地催化过氧化氢氧化苯乙酮，结果表明，Q3MnIII催化剂的活性明显高于Q2MnII，在最佳反应条件下，苯乙酮转化率为27%，苯乙酮选择性大于95%，Q3MnIII催化剂重复使用3次，活性无明显下降，表明稳定性良好。
Two 5,7-dibromo-8-quinolinolato manganese complexes in tetradentate(Q2MnII) and hexadentate(Q3MnIII) modes were prepared and then characterized by Fourier transform infrared(FT-IR) spectrometry.We found that both Mn complexes,together with NH4OAC and HOAc,efficiently catalyzed the oxidation of ethylbenzene to acetophenone by hydrogen peroxide in an acetone-water medium at 20 ℃.Q3MnIII showed much higher catalytic activity for this reaction than Q2MnII,affording a 27% ethylbenzene conversion and more than 95% selectivity for acetophenone under optimum conditions.Q3MnIII was reused three times without significant deactivation,indicating good stability.