[VO(hpbmz)2] | 72532-58-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: [VO(hpbmz)2]
• 英文别名: [VO(2-(2'-hydroxyphenyl)benzimidazole(-H))2]
• CAS: 72532-58-2
• 化学式: C₂₆H₁₈N₄O₃V
• 分子量: 485.395
• InChiKey: DEOWVGXTPXZMMZ-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  bis(acetylacetonate)oxovanadium 、 2-(2-羟基苯基)-1H-苯并咪唑 以 甲醇 为溶剂， 以80%的产率得到[VO(hpbmz)2]
  参考文献：
  名称：

  Polymer-anchored vanadium(IV), molybdenum(VI) and copper(II) complexes of bidentate ligand as catalyst for the liquid phase oxidation of organic substrates

  摘要：

  Monobasic bidentate ligand 2-(2'-hydroxyphenyl)benzimidazole (Hhpbmz) has been covalently bonded to the chloromethylated polystyrene cross-linked with 5% divinylbenzene. Treatment of the resulted chelating resin, abbreviated as PS-Hhpbmz, with [VO(acac)(2)], [MoO2(acac)(2)] (Hacac=acetylacetone) and Cu(CH3COO)(2)center dot H2O, gave polymer-anchored complexes PS-[VO(hpbmz)21, PS-[MoO,(hpbMZ)(2)] and PS[Cu(hpbmz)(2)], respectively. The corresponding neat complexes with Hhpbmz have also been prepared similarly. Structures of these complexes have been established on the basis of elemental analyses, scanning electron micrographs and spectroscopic (infrared and electronic) as well as thermogravimetric studies. These complexes have been tested as catalyst for the oxidation of styrene, ethylbenzene and methyl phenyl sulfide. Reaction conditions for the maximum oxidation of these substrates have been optimised by considering the concentration of oxidant, amount of catalyst, volume of solvent and temperature of the reaction mixture. Under the optimised conditions styrene gave a maximum of 58.9% conversion with five reaction products namely styrene oxide, benzaldehyde, 1-phenylethane- 1,2-diol, benzoic acid, and phenylacetaldehyde. Oxidation of ethylbenzene gave 47.7% conversion where benzaldehyde, phenyl acetic acid, styrene, 1-phenylethane- 1,2-diol and benzoic acid have been obtained as major oxidation products. A maximum of 76.5% conversion of methyl phenyl sulfide, catalysed by PS-[VO(hpbMZ)21, has been achieved. Catalyst, PS-[MoO2(hpbmz)(2)] has shown comparable (75.1%) catalytic activity while only 44.8% conversion has been achieved with PS-[Cu(hpbMZ)(2)]. Irrespective of their catalytic performances, the selectivity for the formation of sulfoxide is almost similar (ca. 75%) for all these catalysts. These catalysts do not leach metal ions during catalytic activity and are recyclable. (C) 2007 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2007.03.074