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Method for preparing ketone compound through biomimetic catalysis

A ketone compound, biomimetic catalysis technology, applied in the oxidation preparation of carbonyl compounds, oxidation reaction preparation, chemical instruments and methods, etc., can solve problems such as low conversion efficiency, achieve high selectivity, reduce energy consumption, and mild reaction conditions. Effect

Active Publication Date: 2016-05-25
山东尚正新材料科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen from the above that the conversion efficiency of metalloporphyrins to catalyst alkanes to prepare ketones is still relatively low

Method used

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  • Method for preparing ketone compound through biomimetic catalysis
  • Method for preparing ketone compound through biomimetic catalysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the reactor, add the diphenylmethane of 10mmol and the isopropyl benzene of 20mmol, add 200ppm and have general formula (I) structure metalloporphyrin catalyst (M 1 =Fe,R 1 =Cl,R 2 =R 3 =R 4 =R 5 =H), the stirring reaction was carried out at a temperature of 40° C. under normal pressure. According to gas chromatography analysis, the conversion rate of raw materials was 90%, and the selectivity of product ketone was 98%.

Embodiment 2

[0023] In the reactor, add the ethylbenzene of 10mmol and the diisopropylbenzene of 100mmol, add 0.5ppm and have general formula (I) structure metalloporphyrin catalyst (M 1 =Co,R 2 = NO 2 , R 1 =R 3 =R 4 =R 5 =H), the stirring reaction was carried out at a temperature of 90° C. under normal pressure. According to gas chromatography analysis, the conversion rate of raw materials was 95%, and the selectivity of product ketone was 98%.

Embodiment 3

[0025] In the reactor, add the cyclohexane of 10mmol and the 1,3-diisopropylbenzene of 10mmol, add 10ppm and have general formula (I) structure metalloporphyrin catalyst (M 1 =Mn,R 3 =OCH 3 , R 1 =R 2 =R 4 =R 5 =H), the stirring reaction was carried out at a temperature of 50° C. under normal pressure. According to gas chromatography analysis, the conversion rate of the raw material was 92%, and the selectivity of the product ketone was 99%.

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Abstract

The invention discloses a method for preparing a ketone compound through biomimetic catalysis. According to the method, aromatic alkane, straight-chain alkane and annular alkane are used as raw materials, oxygen is used as an oxidizing agent, a certain number of hydrogen carriers are added, a metalloporphyrin compound is used as a catalyst, the reaction temperature is controlled at 50-80 DEG C, and ketone is obtained through the catalysis reaction at normal pressure. The method has the advantages of being mild in reaction condition, good in catalysis effect, high in selectivity, simple in process, and the like.

Description

technical field [0001] The invention relates to a method for preparing ketones, in particular to a method for preparing ketones by biomimetic catalysis of alkane oxidation. Background technique [0002] Because of the carbonyl group, the chemical properties of ketones are very active, and they are easy to undergo nucleophilic addition reactions, nucleophilic reduction reactions, aldol condensation reactions, etc. with other chemical substances, thereby generating other high-value organic chemicals. Therefore, ketones are chemical An important class of compounds in industry. [0003] At present, the synthesis methods of ketones mainly include the Friedel-Crafts acylation method and the direct oxidation of alkanes. The Friedel-Crafts acylation method refers to the reaction of acid anhydride, acetyl chloride and active aromatic compounds to obtain aryl ketones in the presence of anhydrous aluminum trichloride. Although the yield of ketone in this method is very high, the cons...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07C45/28C07C49/786C07C49/403C07C49/413C07C49/04C07C49/78C07C49/813C07C29/50C07C33/20C07C33/26
CPCB01J31/183C07C29/50C07C45/28C07C49/786C07C49/403C07C49/413C07C49/04C07C49/78C07C49/813C07C33/20C07C33/26
Inventor 纪红兵周贤太蒋军
Owner 山东尚正新材料科技股份有限公司
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