CN106588577B - The synthetic method of Pentafluorophenol - Google Patents

The synthetic method of Pentafluorophenol Download PDF

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CN106588577B
CN106588577B CN201510677256.0A CN201510677256A CN106588577B CN 106588577 B CN106588577 B CN 106588577B CN 201510677256 A CN201510677256 A CN 201510677256A CN 106588577 B CN106588577 B CN 106588577B
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pentafluoride
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pentafluorophenol
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陈本顺
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Jiangsu Alpha Group Furui Pharmaceutical Suqian Co ltd
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Jiangsu Furui Kangtai Pharmaceutical Co Ltd
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    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/60Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by oxidation reactions introducing directly hydroxy groups on a =CH-group belonging to a six-membered aromatic ring with the aid of other oxidants than molecular oxygen or their mixtures with molecular oxygen
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00Catalysts comprising molecular sieves
    • B01J29/03Catalysts comprising molecular sieves not having base-exchange properties
    • B01J29/0308Mesoporous materials not having base exchange properties, e.g. Si-MCM-41
    • B01J29/0316Mesoporous materials not having base exchange properties, e.g. Si-MCM-41 containing iron group metals, noble metals or copper
    • B01J29/0333Iron group metals or copper

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Abstract

The present invention relates to medicinal chemistry arts, more particularly to a kind of synthetic method of Pentafluorophenol.The present invention be directed to current synthetic routes in industrialized production, process flow is complicated, the higher problem of production cost, a kind of preparation method of completely new Pentafluorophenol is provided, using phenyl-pentafluoride as raw material, under the action of catalyst, it is aoxidized through one step of hydrogen peroxide, synthesis cost is low, simple process, is suitble to industrial mass production.

Description

The synthetic method of Pentafluorophenol
Technical field
The present invention relates to the field of chemical synthesis, more particularly relate to a kind of synthetic method of Pentafluorophenol.
Background technique
Pentafluorophenol, the entitled Pentafluorophenol of English.Pentafluorophenol is a kind of important medicine intermediate, It can be used to prepare pentafluorophenyl group active ester, which can promote the formation of peptide bond, and almost without any side effect.In addition, five Fluorophenol or a kind of liquid crystal material intermediate, especially suitable for the preparation of polyfluoro class monomeric liquid crystal material, which glues with low Degree and high dielectric anisotropy nematic liquid crystalline material are used in mixed way, and can increase the dipole moment of molecule, are reduced the response time, are changed The display performance of kind liquid crystal material, improves clarity, has great importance to production high-performance liquid crystal material.
Currently, the method for preparing Pentafluorophenol have it is following several:
1, patent CN1847210 is disclosed using five bromofluorobenzenes as raw material, is initially formed Grignard Reagent, then anti-with peroxide It answers, finally passes through HCl treatment, obtain Pentafluorophenol.The method starting material is expensive, and is related to grignard reaction, is unfavorable for work Industry metaplasia produces.
2, patent CN102718635 is raw material using five bromofluorobenzenes, through lithiumation, esterification, hydrolysis, oxidation four-step reaction, is obtained To Pentafluorophenol.The same method starting material is expensive, and first step reaction uses n-BuLi, and there are security risks, is not suitable for Industrialized production.
3, document Journal of Organic Chemistry.1991,56 (26), 7350-7354. are using phenyl-hexafluoride Raw material generates phenyl-pentafluoride phenates, then through acidic hydrolysis, obtain Pentafluorophenol under alkaline condition.The starting material price is more Valuableness is also not suitable for industrialized production.
Summary of the invention
The purpose of the present invention is provide a kind of preparation method of completely new Pentafluorophenol in view of the above technical problems.
The purpose of the present invention can be achieved through the following technical solutions:
The synthetic method of the first Pentafluorophenol disclosed by the invention, this method is using phenyl-pentafluoride as raw material, with high-copper MCM- 41 molecular sieves are catalyst, and using hydrogen peroxide as oxidant, raw material phenyl-pentafluoride is under the action of the catalyst and oxidant, instead Pentafluorophenol should be generated;
The high-copper MCM-41 molecular sieve the preparation method comprises the following steps: cetyl trimethylammonium bromide is added to deionization Template solution is obtained in water, it is alkalescent that alkaline reagent to template solution, which is added, and it is molten that ethyl orthosilicate is slowly added into template It in liquid and stirs evenly, obtains colorless and transparent substance;It is slowly added to copper nitrate in colorless and transparent substance and stirs evenly, rises Temperature keeps the temperature 5~48h, obtains product to 100~180 DEG C;Product is adopted and is washed with deionized to neutrality, is centrifugated To white solid, which is put into Muffle furnace and is calcined to get high-copper MCM-41 molecular sieve is arrived.
In the synthetic method of the first Pentafluorophenol: reaction dissolvent is selected from least one of acetonitrile, acetone, water, reaction Temperature is 0~100 DEG C, and preferable reaction temperature is 50~70 DEG C;It is preferred that the molal weight of phenyl-pentafluoride and high-copper MCM-41 molecular sieve Than for 1mol:1~10g, the mass volume ratio of phenyl-pentafluoride and 30% hydrogen peroxide is 1mol:0.1~1L;Cetyl trimethyl bromine Change ammonium: ethyl orthosilicate: the molar ratio of copper nitrate is 1~3:2~6:0.5~2.
In the synthetic method of the first Pentafluorophenol: white solid is put into calcining manners in Muffle furnace are as follows: the first stage is From room temperature to 300 DEG C, 1~3h is kept the temperature, the heating rate in the stage is 5~8 DEG C/min;Second stage heats up from 300 DEG C To 550 DEG C, 3~8h is kept the temperature, the heating rate in the stage is 10~12 DEG C/min.
The synthetic method of second of Pentafluorophenol disclosed by the invention, this method is using phenyl-pentafluoride as raw material, with the double gold of tin zinc Category MCM-41 molecular sieve be catalyst, using hydrogen peroxide as oxidant, phenyl-pentafluoride under the action of the catalyst and oxidant, Reaction generates Pentafluorophenol;
The tin zinc bimetallic MCM-41 molecular sieve the preparation method comprises the following steps: cetyl trimethylammonium bromide is added to Template solution is obtained in deionized water, it is alkalescent that alkaline reagent to template solution, which is added, and ethyl orthosilicate is slowly added into It in template solution and stirs evenly, obtains colorless and transparent substance;Be slowly added in colorless and transparent substance molar ratio be 1:2~ 5 sodium stannate and zinc sulfate mixed solution simultaneously stir evenly, and are warming up to 100~180 DEG C, keep the temperature 5~48h, obtain product;It will produce Object, which is adopted, to be washed with deionized to neutrality, and white solid is centrifugally separating to obtain, which is put into Muffle furnace and is calcined, Obtain tin zinc bimetallic MCM-41 molecular sieve.
In the synthetic method of second of Pentafluorophenol: reaction dissolvent is selected from least one of acetonitrile, acetone, water, reaction Temperature is 0~100 DEG C, and preferable reaction temperature is 50~70 DEG C;It is preferred that phenyl-pentafluoride and tin zinc bimetallic MCM-41 molecular sieve rub Your mass ratio is 1mol:1~10g, and the mass volume ratio of phenyl-pentafluoride and 30% hydrogen peroxide is 1mol:0.1~1L;Cetyl three Methyl bromide ammonium: ethyl orthosilicate: the molar ratio of sodium stannate is 1~3:2~6:0.05~0.1.
In the synthetic method of second of Pentafluorophenol: white solid is put into calcining manners in Muffle furnace are as follows: the first stage is From room temperature to 300 DEG C, 1~3h is kept the temperature, the heating rate in the stage is 5~8 DEG C/min;Second stage heats up from 300 DEG C To 550 DEG C, 3~8h is kept the temperature, the heating rate in the stage is 10~12 DEG C/min.
The synthetic method of the third Pentafluorophenol, this method is using phenyl-pentafluoride as raw material, using TS-1 molecular sieve as catalyst, with Hydrogen peroxide is oxidant, and for phenyl-pentafluoride under the action of the catalyst and oxidant, reaction generates Pentafluorophenol;Wherein five fluorine The molal weight ratio of benzene and TS-1 molecular sieve is 1mol:1~10g, and the mass volume ratio of phenyl-pentafluoride and 30% hydrogen peroxide is 1mol: 0.1~1L;Reaction dissolvent is selected from least one of acetonitrile, acetone, water, and reaction temperature is 0~100 DEG C, preferable reaction temperature It is 50~70 DEG C.
Alkalescent described in technical solution of the present invention refers to that pH value is 9~10.
Beneficial effects of the present invention:
The present invention is using compound ii phenyl-pentafluoride as starting material, I Pentafluorophenol of prepare compound, raw materials used production cost It is low, and production procedure is simple, it is easy to industrialized production.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, and but the scope of the present invention is not limited thereto:
Embodiment 1-1
Cetyl trimethylammonium bromide (1mmol) is add to deionized water to obtain template solution, alkalinity examination is added Ethyl orthosilicate (2mmol) is slowly added into template solution and is stirred evenly, obtained to pH=9~10 of template solution by agent To colorless and transparent substance;It is slowly added to copper nitrate (0.6mmol) in colorless and transparent substance and stirs evenly, is warming up to 100 ~180 DEG C, 30h is kept the temperature, product is obtained;Product is adopted and is washed with deionized to neutrality, white solid is centrifugally separating to obtain The white solid is put into Muffle furnace and is calcined, the first stage is to keep the temperature 2h, the heating in the stage from room temperature to 300 DEG C Speed is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 6h, and the heating rate in the stage is 10~12 DEG C/min, obtain high-copper MCM-41 molecular sieve.
Phenyl-pentafluoride (10mmol) is dissolved in acetonitrile (20ml), above-mentioned high-copper MCM-41 molecular sieve (0.05g) is added, to system Middle dropwise addition 30%H2O2(6ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material react completely.It is slowly dropped to Room temperature filters, 20% solution of sodium bisulfite (10ml) is slowly added dropwise into filtrate, is extracted, is associated with toluene (20ml*3) Machine phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains Pentafluorophenol 9.6mmol, yield 96%.
Embodiment 1-2
Cetyl trimethylammonium bromide (2mmol) is add to deionized water to obtain template solution, alkalinity examination is added Ethyl orthosilicate (4mmol) is slowly added into template solution and is stirred evenly, obtained to pH=9~10 of template solution by agent To colorless and transparent substance;It is slowly added to copper nitrate (1mmol) in colorless and transparent substance and stirs evenly, it is warming up to 100~ 180 DEG C, 30h is kept the temperature, product is obtained;Product is adopted and is washed with deionized to neutrality, white solid is centrifugally separating to obtain.It will The white solid, which is put into Muffle furnace, to be calcined, and the first stage is to keep the temperature 2h, the heating speed in the stage from room temperature to 300 DEG C Degree is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 6h, and the heating rate in the stage is 10~12 DEG C/ Min obtains high-copper MCM-41 molecular sieve.
Phenyl-pentafluoride (10mmol) is dissolved in acetone (20ml), above-mentioned high-copper MCM-41 molecular sieve (0.03g) is added, to system Middle dropwise addition 30%H2O2(10ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material react completely.It is slowly dropped to Room temperature filters, 20% solution of sodium bisulfite (10ml) is slowly added dropwise into filtrate, is extracted, is associated with toluene (20ml*3) Machine phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains Pentafluorophenol 9.5mmol, yield 95%.
Embodiment 1-3
Cetyl trimethylammonium bromide (3mmol) is add to deionized water to obtain template solution, alkalinity examination is added Ethyl orthosilicate (6mmol) is slowly added into template solution and is stirred evenly, obtained to pH=9~10 of template solution by agent To colorless and transparent substance;It is slowly added to copper nitrate (2mmol) in colorless and transparent substance and stirs evenly, it is warming up to 100~ 180 DEG C, 30h is kept the temperature, product is obtained;Product is adopted and is washed with deionized to neutrality, white solid is centrifugally separating to obtain.It will The white solid, which is put into Muffle furnace, to be calcined, and the first stage is to keep the temperature 2h, the heating speed in the stage from room temperature to 300 DEG C Degree is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 6h, and the heating rate in the stage is 10~12 DEG C/ Min obtains high-copper MCM-41 molecular sieve.
Phenyl-pentafluoride (10mmol) is dissolved in acetonitrile (20ml), above-mentioned high-copper MCM-41 molecular sieve (0.1g) is added, to system Middle dropwise addition 30%H2O2(3ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material react completely.It is slowly dropped to Room temperature filters, 20% solution of sodium bisulfite (10ml) is slowly added dropwise into filtrate, is extracted, is associated with toluene (20ml*3) Machine phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains Pentafluorophenol 9.4mmol, yield 94%.
Embodiment 2-1
Cetyl trimethylammonium bromide (2mmol) is add to deionized water to obtain template solution, alkalinity examination is added Ethyl orthosilicate (4mmol) is slowly added into template solution and is stirred evenly, obtained to pH=9~10 of template solution by agent To colorless and transparent substance;It is mixed that sodium stannate (0.08mmol) and zinc sulfate (0.16mmol) is slowly added in colorless and transparent substance It closes object and stirs evenly, be warming up to 100~180 DEG C, keep the temperature 48h, obtain product;Product is adopted and is washed with deionized to neutrality Afterwards, it is centrifugally separating to obtain white solid.The white solid is put into Muffle furnace and is calcined, the first stage be from room temperature to 300 DEG C, 3h is kept the temperature, the heating rate in the stage is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 8h, The heating rate in the stage is 10~12 DEG C/min, obtains tin zinc bimetallic MCM-41 molecular sieve.
Phenyl-pentafluoride (10mmol) is dissolved in acetone (20ml), above-mentioned tin zinc bimetallic MCM-41 molecular sieve (0.06g) is added, 30%H is added dropwise into system2O2(8ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material react completely.It is slow Slowly it is down to room temperature, filters, 20% solution of sodium bisulfite (10ml) is slowly added dropwise into filtrate, extracted with toluene (20ml*3), Merge organic phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains phenyl-pentafluoride Phenol 9.3mmol, yield 93%.
Embodiment 2-2
Cetyl trimethylammonium bromide (3mmol) is add to deionized water to obtain template solution, alkalinity examination is added Ethyl orthosilicate (6mmol) is slowly added into template solution and is stirred evenly, obtained to pH=9~10 of template solution by agent To colorless and transparent substance;Sodium stannate (0.1mmol) is slowly added in colorless and transparent substance to mix with zinc sulfate (0.3mmol) Object simultaneously stirs evenly, and is warming up to 100~180 DEG C, keeps the temperature 48h, obtains product;Product is adopted and is washed with deionized to neutrality Afterwards, it is centrifugally separating to obtain white solid.The white solid is put into Muffle furnace and is calcined, the first stage be from room temperature to 300 DEG C, 3h is kept the temperature, the heating rate in the stage is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 8h, The heating rate in the stage is 10~12 DEG C/min, obtains tin zinc bimetallic MCM-41 molecular sieve.
Phenyl-pentafluoride (10mmol) is dissolved in acetonitrile (20ml), above-mentioned tin zinc bimetallic MCM-41 molecular sieve (0.03g) is added, 30%H is added dropwise into system2O2(5ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material react completely.It is slow Slowly it is down to room temperature, filters, 20% solution of sodium bisulfite (10ml) is slowly added dropwise into filtrate, extracted with toluene (20ml*3), Merge organic phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains phenyl-pentafluoride Phenol 9.4mmol, yield 94%.
Embodiment 2-3
Cetyl trimethylammonium bromide (1mmol) is add to deionized water to obtain template solution, alkalinity examination is added Ethyl orthosilicate (3mmol) is slowly added into template solution and is stirred evenly, obtained to pH=9~10 of template solution by agent To colorless and transparent substance;It is mixed that sodium stannate (0.06mmol) and zinc sulfate (0.3mmol) is slowly added in colorless and transparent substance It closes object and stirs evenly, be warming up to 100~180 DEG C, keep the temperature 48h, obtain product;Product is adopted and is washed with deionized to neutrality Afterwards, it is centrifugally separating to obtain white solid.The white solid is put into Muffle furnace and is calcined, the first stage be from room temperature to 300 DEG C, 3h is kept the temperature, the heating rate in the stage is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 8h, The heating rate in the stage is 10~12 DEG C/min, obtains tin zinc bimetallic MCM-41 molecular sieve.
Phenyl-pentafluoride (10mmol) is dissolved in acetone (20ml), above-mentioned tin zinc bimetallic MCM-41 molecular sieve (0.1g) is added, 30%H is added dropwise into system2O2(10ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material react completely.It is slow Slowly it is down to room temperature, filters, 20% solution of sodium bisulfite (10ml) is slowly added dropwise into filtrate, extracted with toluene (20ml*3), Merge organic phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains phenyl-pentafluoride Phenol 9.5mmol, yield 95%.
Embodiment 3-1
Phenyl-pentafluoride (10mmol) is dissolved in the mixed solution of acetonitrile (15ml) and water (5ml), TS-1 molecular sieve is added (0.1g), 30%H is added dropwise into system2O2(3ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material are complete Reaction.It is slowly dropped to room temperature, filters, 20% solution of sodium bisulfite (12ml) is slowly added dropwise into filtrate, with toluene (20ml* 3) it extracts, merges organic phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains To Pentafluorophenol 8.8mmol, yield 88%.
Embodiment 3-2
Phenyl-pentafluoride (10mmol) is dissolved in the mixed solution of acetonitrile (15ml) and water (5ml), TS-1 molecular sieve is added (0.05g), 30%H is added dropwise into system2O2(8ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material are complete Reaction.It is slowly dropped to room temperature, filters, 20% solution of sodium bisulfite (12ml) is slowly added dropwise into filtrate, with toluene (20ml* 3) it extracts, merges organic phase, it is dry with anhydrous sodium sulfate, it filters, filtrate decompression distillation, the fraction of 110~115 DEG C of recycling obtains To Pentafluorophenol 8.6mmol, yield 86%.
Embodiment 3-3
Phenyl-pentafluoride (10mmol) is dissolved in the mixed solution of acetonitrile (15ml) and water (5ml), TS-1 molecular sieve is added (0.03g), 30%H is added dropwise into system2O2(10ml), is added dropwise, and controls 65 DEG C of reaction 3h of temperature.TLC contact plate, raw material are complete Full response.It is slowly dropped to room temperature, filters, 20% solution of sodium bisulfite (12ml) is slowly added dropwise into filtrate, uses toluene (20ml*3) extraction, merges organic phase, dry with anhydrous sodium sulfate, filters, and filtrate decompression distillation, 110~115 DEG C of recycling evaporates Point, obtain Pentafluorophenol 8.5mmol, yield 85%.

Claims (6)

1. a kind of synthetic method of Pentafluorophenol, it is characterised in that: this method is using phenyl-pentafluoride as raw material, with high-copper MCM-41 molecule Sieve is catalyst, and using hydrogen peroxide as oxidant, under the action of the catalyst and oxidant, reaction generates raw material phenyl-pentafluoride Pentafluorophenol;
The high-copper MCM-41 molecular sieve preparation method are as follows: be add to deionized water to obtain by cetyl trimethylammonium bromide Template solution, it is alkalescent that alkaline reagent to template solution, which is added, and ethyl orthosilicate is slowly added into template solution and is stirred It mixes uniformly, obtains colorless and transparent substance;It is slowly added to copper nitrate in colorless and transparent substance and stirs evenly, is warming up to 100 ~180 DEG C, 5~48h is kept the temperature, product is obtained;Product is adopted and is washed with deionized to neutrality, it is solid to be centrifugally separating to obtain white The white solid is put into Muffle furnace and calcines to get high-copper MCM-41 molecular sieve is arrived by body;
Wherein: reaction dissolvent is selected from least one of acetonitrile, acetone, water, and reaction temperature is 0~100 DEG C;Phenyl-pentafluoride and high-copper The molal weight ratio of MCM-41 molecular sieve is 1mol:1~10g, and the mass volume ratio of phenyl-pentafluoride and 30% hydrogen peroxide is 1mol: 0.1~1L;
White solid is put into calcining manners in Muffle furnace are as follows: the first stage is to keep the temperature 1~3h, the rank from room temperature to 300 DEG C The heating rate of section is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 3~8h, the heating speed in the stage Degree is 10~12 DEG C/min.
2. the synthetic method of Pentafluorophenol according to claim 1, it is characterised in that: cetyl trimethylammonium bromide: Ethyl orthosilicate: the molar ratio of copper nitrate is 1~3:2~6:0.5~2.
3. a kind of synthetic method of Pentafluorophenol, it is characterised in that: this method is using phenyl-pentafluoride as raw material, with tin zinc bimetallic MCM- 41 molecular sieves are catalyst, and using hydrogen peroxide as oxidant, phenyl-pentafluoride is under the action of the catalyst and oxidant, reaction life At Pentafluorophenol;
The tin zinc bimetallic MCM-41 molecular sieve preparation method are as follows: cetyl trimethylammonium bromide is added to deionized water In obtain template solution, it is alkalescent that alkaline reagent to template solution, which is added, and ethyl orthosilicate is slowly added into template solution In and stir evenly, obtain colorless and transparent substance;The stannic acid that molar ratio is 1:2~5 is slowly added in colorless and transparent substance Sodium and zinc sulfate mixed solution simultaneously stir evenly, and are warming up to 100~180 DEG C, keep the temperature 5~48h, obtain product;Product is used Deionized water is washed to neutrality, and white solid is centrifugally separating to obtain, which is put into Muffle furnace and is calcined to get arriving Tin zinc bimetallic MCM-41 molecular sieve;
Reaction dissolvent is selected from least one of acetonitrile, acetone, water, and reaction temperature is 0~100 DEG C;Phenyl-pentafluoride and the double gold of tin zinc Belong to the molal weight ratio of MCM-41 molecular sieve for 1mol:1~10g, the mass volume ratio of phenyl-pentafluoride and 30% hydrogen peroxide is 1mol: 0.1~1L;
White solid is put into calcining manners in Muffle furnace are as follows: the first stage is to keep the temperature 1~3h, the rank from room temperature to 300 DEG C The heating rate of section is 5~8 DEG C/min;Second stage is warming up to 550 DEG C from 300 DEG C, keeps the temperature 3~8h, the heating speed in the stage Degree is 10~12 DEG C/min.
4. the synthetic method of Pentafluorophenol according to claim 3, it is characterised in that: cetyl trimethylammonium bromide: Ethyl orthosilicate: the molar ratio of sodium stannate is 1~3:2~6:0.05~0.1.
5. a kind of synthetic method of Pentafluorophenol, it is characterised in that: this method is to urge with TS-1 molecular sieve using phenyl-pentafluoride as raw material Agent, using hydrogen peroxide as oxidant, for phenyl-pentafluoride under the action of the catalyst and oxidant, reaction generates Pentafluorophenol; The molal weight ratio of phenyl-pentafluoride and TS-1 molecular sieve is 1mol:1~10g, and the mass volume ratio of phenyl-pentafluoride and 30% hydrogen peroxide is 1mol:0.1~1L.
6. the synthetic method of Pentafluorophenol according to claim 5, it is characterised in that: reaction dissolvent be selected from acetonitrile, acetone, At least one of water, reaction temperature are 0~100 DEG C.
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