Method for dehydrogenating dihydromyricetin

A technology of dihydromyricetin and dihydropoplar, applied in electrodes, electrolysis process, electrolysis components, etc., can solve problems such as large conversion space, and achieve the effect of fast conversion rate and high conversion rate

Inactive Publication Date: 2019-01-25
湖南中茂生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Considering that the content of dihydromyricetin in vine tea is as high as 25%, there is still a lot of room for transformation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Get dihydromyricetin 2g and carry out dehydrogenation by the following method

[0029] A method for dehydrogenating dihydromyricetin, comprising the following steps:

[0030] S01. Electrode pretreatment;

[0031] S02. the electrode surface obtained in step S1 is modified with p-formic acid benzene methanesulfonic acid modified graphene;

[0032] S03. The modified electrode obtained in step S2 is connected to the negative pole of the power supply, and the positive pole of the power supply is connected to the inert electrode;

[0033] S04. The electrolysis system of step S3 is put into the solution containing dihydromyricetin;

[0034] S05. Filter the electrolyte after putting it in ice for 15 hours.

[0035] Further, the preparation method of the graphene modified with p-formic acid benzenesulfonic acid comprises the following steps:

[0036] S11. Prepare highly oxidized graphene oxide by oxidation;

[0037] S12. The graphene oxide obtained in step S11 and p-formic ...

Embodiment 2

[0045] Get dihydromyricetin 2g and carry out dehydrogenation by the following method

[0046] A method for dehydrogenating dihydromyricetin, comprising the following steps:

[0047] S01. Electrode pretreatment;

[0048] S02. the electrode surface obtained in step S1 is modified with p-formic acid benzene methanesulfonic acid modified graphene;

[0049] S03. The modified electrode obtained in step S2 is connected to the negative pole of the power supply, and the positive pole of the power supply is connected to the inert electrode;

[0050] S04. The electrolysis system of step S3 is put into the solution containing dihydromyricetin;

[0051] S05. Filter the electrolyte after putting it in ice for 12 hours.

[0052] Further, the preparation method of the graphene modified with p-formic acid benzenesulfonic acid comprises the following steps:

[0053] S11. Prepare highly oxidized graphene oxide by oxidation;

[0054] S12. The graphene oxide obtained in step S11 and p-formic ...

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PUM

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Abstract

The invention relates to the field of organic synthesis, in particular to a method for dehydrogenating dihydromyricetin. The method comprises the following steps: S01, pretreating an electrode; S01, modifying p-benzenesulfonic acid-modified graphene on the surface of the electrode obtained in step S1; So3, connecting a modified electrode obtained in step S2 to a negative electrode of a power supply, and connecting a positive electrode of the power supply to an inert electrode; S04, placing an electrolysis system of step S3 into a solution containing dihydromyricetin; and S05, standing the electrolyte in an icy domain for 12 to 15 hours, and filtering. The dehydrogenation reaction of the dihydromyricetin is promoted by adopting an electrochemical method. The reaction is performed under an alkaline condition, so that the dehydrogenation of the dihydromyricetin can be facilitated. In the whole dihydromyricetin process, the method has the characteristics of high conversion rate and high conversion speed.

Description

technical field [0001] The invention relates to the field of organic synthesis, in particular to a method for dehydrogenating dihydromyricetin. Background technique [0002] Dihydromyricetin (3,5,7,3',4',5'-hexahydroxy-2,3-dihydroflavonol, dihydromyricetin, DMY) DMY) is a polyphenolic hydroxyl dihydroflavonol, and It is called staphylophyll, which belongs to flavonoids. The data show that dihydromyricetin exists in a large amount in the plants of the genus Vitis vinifera, such as vine tea (Snake grape, Cantonese snake grape), Snake grape, Snake grape, Northeast Snake grape, Snake grape, etc., among which Vine tea is especially special. The content of dihydromyricetin in the young stems and leaves of S. dentatus plants widely distributed in Guangdong, Guangxi, Yunnan, Hunan, Hubei, Jiangxi and other provinces in China was found to reach that of the samples. More than 20% of the dry weight, and the heart leaves in the young leaves can reach more than 40%. [0003] At prese...

Claims

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Application Information

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IPC IPC(8): C25B3/00C25B11/04
CPCC25B3/00C25B11/04
Inventor 赵勇彪李佳莲易娜何鹏
Owner 湖南中茂生物科技有限公司
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