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Catalytic oxidation application of sulfaquinoxaline cobalt compound

A technology for sulfaquinoxaline cobalt and catalytic oxidation, applied in the field of material chemistry, can solve the problems of low Schiff base synthesis yield, high cost, poor stability, etc., and achieve good catalytic oxidation activity and high stability Effect

Active Publication Date: 2018-08-17
宁波市大学科技园发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem that the above-mentioned Schiff base metal complexes exist as catalysts is that some Schiff base synthesis yields are not high, the stability is not good or the cost is high, etc.

Method used

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  • Catalytic oxidation application of sulfaquinoxaline cobalt compound
  • Catalytic oxidation application of sulfaquinoxaline cobalt compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh CoSO 4 ·6H 2 A mixed solvent of O (0.263g, 1.0mmol), sulfaquinoxaline (0.600g, 2.0mmol), 2,2'-bipyridine (0.156g, 1.0mmol) plus 4.0mL distilled water, 8mL ethanol and 2.0mL DMF , then microwave heating and stirring, reflux for 15 minutes, then cool to room temperature, let stand, slowly evaporate the solvent for 2 days, and precipitate red blocky crystals.

Embodiment 2

[0020] Weigh [Co(NO 3 ) 2 ]·6H 2 A mixed solvent of O (0.291g, 1.0mmol), sulfaquinoxaline (0.600g, 2.0mmol), 2,2'-bipyridine (0.156g, 1.0mmol) plus 6.0mL of distilled water, 12mL of ethanol and 3.0mL of DMF Then heated and stirred by microwave, refluxed for 30 minutes, cooled to room temperature, left to stand, slowly evaporated the solvent for 3 days, and precipitated red blocky crystals.

Embodiment 3

[0022] Weigh Co(Ac) 2 4H 2 A mixed solvent of O (0.249g, 1.0mmol), sulfaquinoxaline (0.600g, 2.0mmol), 2,2'-bipyridine (0.156g, 1.0mmol) plus 8.0mL distilled water, 16mL ethanol and 4.0mL DMF , then microwave heating and stirring, reflux reaction for 20min, then cool to room temperature, let stand, and slowly evaporate the solvent for 4 days, and precipitate red blocky crystals.

[0023] The red blocky crystal that makes in the above-mentioned embodiment carries out X-ray single crystal diffractometer analysis test, determines that its molecular formula is C 38 h 32 N 10 o 5 S 2 Co, crystal system is monoclinic, space group is P2(1) / c, unit cell parameters α=90°, β=100.848°, γ=90°, that is, the coordination compound of cobalt, and its structural unit is shown in Figure 1.

[0024] Using the cobalt compound prepared in the above example as a catalyst for catalytic oxidation of benzoin, in a mixed solvent of ethanol and water with a volume ratio of 1:2, reacted at 45°C...

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Abstract

The invention discloses catalytic oxidation application of sulfaquinoxaline cobalt compound. The compound is characterized by being cobalt compound with catalytic oxidation activity on benzoin; a molecular formula of the cobalt compound is C38H32N10O5S2Co, a crystal system is monoclinic, a space group is P2(1) / c, cell parameters are shown in a following image, the alpha is equal to 90 degrees, thebeta is equal to 100.848 degrees, and the gamma is equal to 90 degrees. The compound is prepared from cobalt salt, sulfaquinoxaline and 2,2'-dipyridyl and by mixed reaction according to a certain proportion and has the advantages of defined spatial structure, accurate molecular formula and simple synthesizing steps. The prepared cobalt compound disclosed by the invention shows good catalytic oxidation activity on benzoin and has a wide application prospect of serving as a potential catalytic active material.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a catalytic oxidation application of a sulfaquinoxaline cobalt compound. Background technique [0002] Catalytic oxidation reaction is one of the most important reactions in chemical industry and medicine field. Most of the oxidants used in early catalytic oxidation reactions were various inorganic compound oxidants, such as potassium permanganate, potassium dichromate, etc. These oxidants seriously polluted the environment. As environmental issues are getting more and more attention, environmentally friendly green oxidants (such as oxygen, hydrogen peroxide, ozone, etc.) are favored by people and have become a research hotspot in oxidation reactions. However, this kind of oxidizing agent has disadvantages such as weak oxidizing ability, uncertain oxidizing performance, and complex reaction conditions. Studies have found that under the action of some coordination c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07F15/06C07C49/784C07C45/39
CPCB01J31/183B01J2231/763B01J2531/0241B01J2531/845C07B2200/13C07C45/39C07F15/065C07C49/784
Inventor 段晓晨李星
Owner 宁波市大学科技园发展有限公司
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