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Preparation method for silver 2,4-pentanedionate and application of silver 2,4-pentanedionate as catalyst

A technology of silver acetylacetonate and acetylacetone is applied in the field of preparation of silver acetylacetonate and achieves the effects of mild conditions and easy operation

Active Publication Date: 2018-12-11
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on silver acetylacetonate (Agacac) in the prior art, the invention provides a kind of preparation method of silver acetylacetonate and its application in catalytic glycosylation reaction

Method used

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  • Preparation method for silver 2,4-pentanedionate and application of silver 2,4-pentanedionate as catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Add 30% hydrogen peroxide (0.2mL) to the silver nitrate solution (0.1mol / L, 100mL), stir at room temperature for 10 minutes, add acetylacetone (100mL) and triethylamine (1mL), raise the temperature to 40℃ and react for 2 hours After filtering, the filtrate is diluted with chloroform and washed with water, the organic layer (chloroform layer) is concentrated under reduced pressure and dried in vacuum to obtain silver acetylacetonate (1.99g, yield is about 96.1%, the UV-visible absorption spectrum is consistent with the literature report) .

Embodiment 2

[0012] Add 30% hydrogen peroxide (0.2mL) to the silver nitrate solution (0.1mol / L, 100mL), stir at room temperature for 15 minutes, add acetylacetone (100mL) and triethylamine (1mL), heat up to 45°C and react for 1.5 hours After filtering, the filtrate was diluted with chloroform and washed with water, and the organic layer (chloroform layer) was concentrated under reduced pressure and dried in vacuum to obtain silver acetylacetonate (1.98 g, yield: 95.7%).

Embodiment 3

[0014] Acetylacetone (100mL) and triethylamine (1mL) were added to the silver nitrate solution (0.1mol / L, 100mL), heated to 40°C and reacted for 2 hours, filtered, the filtrate was diluted with chloroform and washed with water. The organic layer (chloroform Layer) After concentration under reduced pressure and vacuum drying, silver acetylacetonate (283 mg, yield is about 13.7%) is obtained.

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PUM

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Abstract

The invention relates to a preparation method for silver 2,4-pentanedionate and an application of the silver 2,4-pentanedionate as a catalyst. The preparation method for the silver 2,4-pentanedionatecomprises the following steps that a catalytic amount of hydrogen peroxide is added into a silver nitrate solution, stirring is carried out at room temperature for 10-15 minutes, acetylacetone and triethylamine are added, heating is carried out to reach 40-45 DEG C, reaction is carried out for 1.5-2 hours, filtering is carried out, a filtrate is diluted by using chloroform and is washed with water, and then an organic layer (a chloroform layer) is subjected to vacuum concentration and vacuum drying so as to obtain the silver 2,4-pentanedionate (Agacac).

Description

Technical field [0001] The invention belongs to the field of complex catalysis, and specifically relates to a method for preparing silver acetylacetonate and its use as a catalyst. Background technique [0002] Acetylacetonate is widely used in chemical industry, petroleum, medicine, electronics, materials and other fields, mainly for catalysis, stabilization and promotion. For example, calcium acetylacetonate is a catalyst for the transesterification of methyl methacrylate and dimethylaminoethanol to synthesize DMA; iron acetylacetonate can be used as a high-efficiency photosensitive catalyst for the photodegradation of plastics; in addition, calcium acetylacetonate and zinc acetylacetonate are rigid PVC, etc. The heat stabilizer of halides is also the accelerator of resin hardening. There are few reports on silver acetylacetonate (Agacac) in the prior art. The present invention provides a method for preparing silver acetylacetonate and its application in catalyzing the glycosy...

Claims

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Application Information

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IPC IPC(8): C07C49/92C07C45/77B01J31/22C07H15/04C07H1/00
CPCC07C45/77C07H1/00C07H15/04B01J31/2213B01J2531/17B01J2231/4288C07C49/92
Inventor 于晓萍王斌
Owner YANGZHOU POLYTECHNIC INST
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