Method for preparing diphenylethanone from benzyl alcohol through photocatalytic one-step method

A technology of benzophenone and benzyl alcohol, which is applied to the preparation of carbon-based compounds, chemical instruments and methods, and the preparation of hydroxyl compounds. It can solve problems such as long routes, high raw material costs, and environmental pollution, and achieve simple and safe operation processes. The effect of broadening the product range and making the preparation is simple

Inactive Publication Date: 2018-08-24
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new technology allows creation of an improved type of compound called BPZO (benzoquinonium oxide) that could replace traditional methods used today's products such as Benzonidine or DMBA (dimethylamino phenol). It also simplifies production processes while reducing environmental impact on its manufacturing costs. Additionally, this new material may have potential applications in various industries like medicine, foodstuff, cosmetics, etc., making them more effective than current alternatives due to their unique properties.

Problems solved by technology

This patented describes different ways to prepare certain types of molecules called benzothensone compound(benzenonaphthaquinone). However these routes involve complicated steps involving multiple expensive and hazardous substances like acids, bases, organosilicon chemistry, hydroxides, amines, carboximols, oximes, perchlorates, dimers, trimanes, tertiary butane diol diaclopendride, hexafluoroanisoles, napthoquinoIs, cyclohexadienopyridobenzodihydroxyphenanthranes), lithochromism phenomena, cyclotriphosphorus dyes, fluoresceins, chromatography techniques, ion exchange reservoirs, metal complexes, and other processes involved during their production.

Method used

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  • Method for preparing diphenylethanone from benzyl alcohol through photocatalytic one-step method
  • Method for preparing diphenylethanone from benzyl alcohol through photocatalytic one-step method
  • Method for preparing diphenylethanone from benzyl alcohol through photocatalytic one-step method

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Experimental program
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Effect test

Embodiment 1

[0028] In a 5ml quartz glass reaction tube, add 0.02mmol benzyl alcohol respectively, weigh 5mg Zn 0.6 In 2 S 3.6 Catalyze the reaction, add 1.0ml of acetonitrile, replace the reaction tube with argon gas and seal it, and light it with 6W LED at room temperature for 2 hours. Figure 1 Sincerely. The yield of benzophenone was 84.9%.

Embodiment 2

[0030] In a 5ml quartz glass reaction tube, add 0.2mmol benzyl alcohol respectively, weigh 10mg Zn 0.6 In 2 S 3.6 Catalyze the reaction, add 1.0ml of acetonitrile, replace the reaction tube with argon gas and seal it, and light it with 6W LED at room temperature for 10 hours. After the reaction, the product is detected by chromatography. Figure 1 Sincerely. The yield of benzophenone was 75.1%.

Embodiment 3

[0032] In a 5ml quartz glass reaction tube, add 0.4mmol benzyl alcohol respectively, weigh 2mg Zn 0.6 In 2 S 3.6 Catalyze the reaction, add 1.0ml of acetonitrile, replace the reaction tube with argon gas and seal it, and light it with 6W LED at room temperature for 30 hours. Figure 1 Sincerely. The yield of benzophenone is 63.8%.

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Abstract

The present invention relates to a method for preparing diphenylethanone from benzyl alcohol through a photocatalytic one-step method. According to the method, diphenylethanone is directly prepared byusing inexpensive benzyl alcohol as a raw material under the action of a solid photocatalyst; and the reaction process comprises: mixing benzyl alcohol, a catalyst and an acetonitrile solvent are mixed, placing in a pressure container, replacing with an inert gas, and carrying out illumination stirring at a room temperature, wherein the reaction time is more than 1 h, the catalyst is easily separated from the reaction system after the reaction and can be recycled multiple times, and the separation yield of diphenylethanone is up to 81%.

Description

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Claims

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Application Information

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Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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