trans-trans-bis(maltolato)oxovanadium(IV)

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: trans-trans-bis(maltolato)oxovanadium(IV)
• 英文别名: bis(maltolato)oxovanadium(IV)；bis(maltolato)oxovanadium；2-Methyl-4-oxopyran-3-olate;oxygen(2-);vanadium(4+)
• 化学式: C₁₂H₁₀O₇V
• 分子量: 317.149
• InChiKey: YQAGPWRNNWCFML-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  -0.08
• 重原子数：
  20
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  99.7
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  乙醇 、 trans-trans-bis(maltolato)oxovanadium(IV) 以 not given 为溶剂， 生成 cis-bis(maltolato)ethoxyoxovanadium(V)
  参考文献：
  名称：

  Supported bis(maltolato)oxovanadium complexes as catalysts for cyclopentane and cyclooctane oxidations with dioxygen

  摘要：

  Carbamated silica gel supported bis(maltolato)oxovanadium(IV or V) complexes, [VO(ma)(2)] (1), [VO(py)(ma)(2)] (2) (py=pyridine), cis[VO(OCH3)(ma)(2)] (3) and cis-[VO(OC2H5)(ma)(2)] (4), were used as catalysts for the oxidation of cyclopentane and cyclooctane by molecular oxygen in a batch reactor, under moderate reaction conditions (typically P(O-2) ca. 10-14atm, at 150-160 degrees C). The corresponding ketones, i.e. cyclopentanone and cyclooctanone are the main products (up to 10 and 25% yields, respectively) of the cycloalkane oxidations, but cyclopentanol and cyclooctanol are also formed in smaller amounts. The supported complex 1 shows the best activity and selectivity. The reaction is further promoted by the use of some heteroaromatic acids as co-catalysts, namely 2-pyrazine-carboxylic acid. Experiments with radical traps suggest the involvement of a free-radical mechanism. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2006.09.049
• 作为产物：
  描述：

  麦芽醇 、 硫酸氧钒水合物 在 NaOH 作用下， 以 水 为溶剂， 生成 trans-trans-bis(maltolato)oxovanadium(IV)
  参考文献：
  名称：

  双（麦芽糖基）氧钒（IV）的振动光谱：一种有效的胰岛素模拟剂。

  摘要：

  记录3-羟基-2-甲基-4-吡喃酮（麦芽酚）双（麦芽香豆基）氧钒（IV）的氧钒（IV）配合物的FTIR和FT-拉曼光谱，并与未配位的麦芽酚的光谱进行比较，简要讨论以及一些相关物种。

  DOI：

  10.1016/j.saa.2010.09.010

文献信息

• Synthesis and characterization of 3-hydroxy-4pyridinone-oxovanadium(IV) complexes
  作者：John Burgess、Baltazar De Castro、Celeste Oliveira、Maria Rangel、Walkiria Schlindweind

  DOI：10.1016/s0277-5387(96)00343-9

  日期：1997.1

  The synthesis and characterization of several new bis-ligand-oxo-vanadium(IV) complexes containing 1,2-substituted-3-hydroxy-4-pyridinonates or ethylmaltolate (3-hydroxy-2-ethyl-pyranonate) are reported. Structures are proposed based on EXAFS data. Copyright (C) 1996 Elsevier Science Ltd
• Supported bis(maltolato)oxovanadium complexes as catalysts for cyclopentane and cyclooctane oxidations with dioxygen
  作者：Gopal S. Mishra、João J.R. Fraústo da Silva、Armando J.L. Pombeiro

  DOI：10.1016/j.molcata.2006.09.049

  日期：2007.3

  Carbamated silica gel supported bis(maltolato)oxovanadium(IV or V) complexes, [VO(ma)(2)] (1), [VO(py)(ma)(2)] (2) (py=pyridine), cis[VO(OCH3)(ma)(2)] (3) and cis-[VO(OC2H5)(ma)(2)] (4), were used as catalysts for the oxidation of cyclopentane and cyclooctane by molecular oxygen in a batch reactor, under moderate reaction conditions (typically P(O-2) ca. 10-14atm, at 150-160 degrees C). The corresponding ketones, i.e. cyclopentanone and cyclooctanone are the main products (up to 10 and 25% yields, respectively) of the cycloalkane oxidations, but cyclopentanol and cyclooctanol are also formed in smaller amounts. The supported complex 1 shows the best activity and selectivity. The reaction is further promoted by the use of some heteroaromatic acids as co-catalysts, namely 2-pyrazine-carboxylic acid. Experiments with radical traps suggest the involvement of a free-radical mechanism. (c) 2006 Elsevier B.V. All rights reserved.
• Vibrational spectra of bis(maltolato)oxovanadium(IV): A potent insulin mimetic agent
  作者：Beatriz S. Parajón-Costa、Enrique J. Baran

  DOI：10.1016/j.saa.2010.09.010

  日期：2011.1

  The FTIR and FT-Raman spectra of the oxovanadium(IV) complex of 3-hydroxy-2-methyl-4-pyrone (maltol) bis(maltolato)oxovanadium(IV) were recorded and briefly discussed by comparison with the spectra of uncoordinated maltol and with some related species.

  记录3-羟基-2-甲基-4-吡喃酮（麦芽酚）双（麦芽香豆基）氧钒（IV）的氧钒（IV）配合物的FTIR和FT-拉曼光谱，并与未配位的麦芽酚的光谱进行比较，简要讨论以及一些相关物种。