CN103739452A - Synthetic method of m-chloroanisole - Google Patents

Synthetic method of m-chloroanisole Download PDF

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Publication number
CN103739452A
CN103739452A CN201410035767.8A CN201410035767A CN103739452A CN 103739452 A CN103739452 A CN 103739452A CN 201410035767 A CN201410035767 A CN 201410035767A CN 103739452 A CN103739452 A CN 103739452A
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Prior art keywords
organic solvent
chloroneb
synthetic method
dichlorobenzene
sodium methylate
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CN201410035767.8A
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汪德林
黄绪民
王培坤
邵千飞
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ANHUI LIXING CHEMICAL CO LTD
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ANHUI LIXING CHEMICAL CO LTD
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01Preparation of ethers
    • C07C41/16Preparation of ethers by reaction of esters of mineral or organic acids with hydroxy or O-metal groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

The invention discloses a synthetic method of m-chloroanisole. The synthetic method comprises the following steps: mixing m-dichlorobenzene, sodium methylate and a first organic solvent, and adding copper salt as a catalyst at the same time, wherein the molar ratio of m-dichlorobenzene to sodium methylate to copper salt is 1:(0.5-8):(0.005-0.1), and 1.5-3.5 ml of a first organic solvent is added in m-dichlorobenzene per gram; at the reflux temperature of 75-150 DEG C, stirring and reacting for 3-24 hours; after reaction is finished, steaming the organic solvent, adding water in residual liquid, using a second organic solvent for extraction, and distilling or rectifying organic liquid to obtain the compound m-chloroanisole. The m-chloroanisole has high quality, is low in cost and has a great market advantage. The method uses m-dichlorobenzene as a raw material, and the m-dichlorobenzene reacts with a sodium methylate solution under the self-made copper salt catalyst to conveniently and economically obtain the m-chloroanisole. The method is a one-step synthetic method and has the advantages of simple process, convenience in operation, short production cycle,low environmental pollution, high product yield and good development prospect.

Description

The synthetic method of a kind of chloroneb
Technical field
What the present invention relates to is a kind of synthetic method of fine-chemical intermediate, the in particular synthetic method of a kind of chloroneb.
Background technology
Between chloroneb be a kind of important pharmaceutical-chemical intermediate, be widely used in medicine and organic synthesis.The main application of medicine aspect is to substitute Meta Bromo Anisole to produce tramadol hydrochloride, is also the raw material of synthetic 3-methoxybenzenethiol.Between chloroneb because its quality is high, price is low, obtain numerous users' favor.
About synthesizing of Meta Bromo Anisole, generally there is following route of synthesis: be one, take oil of mirbane as raw material is at H 2o 2bromination m-bromonitrobenzene under catalysis, m-bromonitrobenzene is at FeCl 3, under activated carbon catalysis, prepare m-bromoaniline with hydrazine hydrate reduction, m-bromoaniline again through diazotization, methylate, the refining Meta Bromo Anisole that to obtain.As Chinese invention patent: CN200810138004.0, the preparation of Meta Bromo Anisole, the method complex process step is many, and cost is high, and yield is low, and environmental pollution is larger, is difficult to suitability for industrialized production.Two, be take meta-aminophenol as raw material, through acetylize, etherificate, the synthetic Meta Bromo Anisole of sandmeyer reaction.Synthetic take meta-aminophenol route as raw material, complex process, by product is many, and yield is low.
" one kettle way " synthesizes Meta Bromo Anisole, is raw material before this with oil of mirbane, and first bromination obtains m-bromonitrobenzene, then under phase-transfer catalyst effect, carries out methoxylation with one kettle way, and a step obtains Meta Bromo Anisole, and overall yield of reaction has 60%.Its catalyzer is Tetrabutyl amonium bromide, and methylating reagent is homemade potassium methylate, and price is more expensive, is unfavorable for suitability for industrialized production.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the synthetic method of a kind of chloroneb is provided, realize the synthetic method of high yield.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
(1) Meta Dichlorobenzene, sodium methylate and the first organic solvent are mixed, add mantoquita as catalyzer simultaneously, Meta Dichlorobenzene: sodium methylate: the mol ratio of mantoquita is 1:0.5~8:0.005~0.1, in every gram of Meta Dichlorobenzene, add the first organic solvent of 1.5~3.5ml, stirring reaction 3~24 hours under 75~150 ℃ of reflux temperatures; (2) react complete, steam except organic solvent, add water, and use the second organic solvent extraction in raffinate, distillation or rectifying organic liquor obtain chloroneb between compound.
In described step (1), the first organic solvent is selected from the one in o-Xylol, p-Xylol, DMF, N-Methyl pyrrolidone, DMI, oil of mirbane and methyl-phenoxide.
Sodium methylate is one or both in solid sodium methylate and the massfraction sodium methoxide solution that is 28% in described step (1).
In described step (1), mantoquita is one or more kinds in cupric oxide, cuprous chloride, cuprous bromide, oxysuccinic acid cuprous chloride catalyst.
The preparation method who states oxysuccinic acid cuprous chloride catalyst is: by weight, after the aqueous solution of malic acid of two parts of weight contents 40~60% and the reaction of a cuprous chloride, through suction filtration, dry and in described step (2), the second organic solvent is selected from benzene,toluene,xylene, oil of mirbane, chlorobenzene, bromobenzene, methylene dichloride, chloroform, tetracol phenixin, 1, the one in 2-ethylene dichloride and ethyl acetate.
Reaction equation of the present invention is as follows:
Figure BDA0000461543160000021
The present invention has the following advantages compared to existing technology: between product prepared by the present invention, chloroneb substitutes Meta Bromo Anisole, and quality is high, and price is low, has the very large market advantage;
The present invention, take Meta Dichlorobenzene as raw material, with sodium methoxide solution reaction, facilitates an economic chloroneb that obtains under homemade copper salt catalyst;
The present invention is single stage method synthesis method, and technique is simple, easy to operate, with short production cycle, and environmental pollution is little, and product yield is higher, has good development prospect.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
In reactor by 44.1g, the Meta Dichlorobenzene of 0.3mol, 115.7g, the massfraction of 0.6mol is 28% sodium methoxide solution and the N of 100ml, dinethylformamide mixes, add 3g, the CuBr of 0.021mol is as catalyzer simultaneously, steams methyl alcohol to ℃ again back flow reaction 18 hours of still temperature to 140 under stirring.React complete, steam except DMF, add water in raffinate, and extract three times with the benzene of 30ml, organic liquor rectifying obtains chloroneb 32.2g between compound, yield 75.4%.
Embodiment 2
In reactor by 58.8g, the Meta Dichlorobenzene of 0.4mol, 38.6g, the massfraction of 0.2mol is 28% sodium methoxide solution and the N of 100ml, dinethylformamide mixes, add 3g, the CuBr of 0.021mol is as catalyzer simultaneously, steams methyl alcohol to ℃ again back flow reaction 18 hours of still temperature to 140 under stirring.React complete, steam except DMF, add water in raffinate, and extract three times with the benzene of 30ml, organic liquor rectifying obtains chloroneb 8.1g between compound, yield 14.2%.
Embodiment 3
In the present embodiment, the charging capacity of sodium methoxide solution is 231.1g, obtains a chloroneb 32.4g, yield 75.8% after reaction.Other embodiments are identical with embodiment 1.
Embodiment 4
In the present embodiment, the charging capacity of CuBr is 0.72g, obtains a chloroneb 15.0g, yield 35.1% after reaction.Other embodiments are identical with embodiment 1.
Embodiment 5
In the present embodiment, the charging capacity of CuBr is 14.4g, obtains a chloroneb 32.6g, yield 76.3% after reaction.Other embodiments are identical with embodiment 1.
Embodiment 6
The ingredient proportion of the present embodiment is identical with embodiment 1, and back flow reaction 24 hours at 20 ℃, obtains a chloroneb 7.0g, yield 16.4%.Other embodiments are identical with embodiment 1.
Embodiment 7
The present embodiment back flow reaction 24 hours at 66 ℃, obtains a chloroneb 14.1g, yield 33.0%.Other embodiments are identical with embodiment 6.
Embodiment 8
First organic solvent of the present embodiment is N-Methyl pyrrolidone, and other embodiments are identical with embodiment 1, obtains a chloroneb 30.9g, yield 72.3%.
Embodiment 9
The copper salt catalyst of the present embodiment is CuI, and molar weight is identical with CuBr, and other embodiments are identical with embodiment 1, obtains a chloroneb 32.3g, yield 75.6%.
Embodiment 10
In reactor by 58.8g, the Meta Dichlorobenzene of 0.4mol, 115.7g, the massfraction of 0.6mol is 28% sodium methoxide solution and the N of 200ml, dinethylformamide mixes, add 3g, the CuBr of 0.021mol is as catalyzer simultaneously, steams methyl alcohol to ℃ again back flow reaction 12 hours of still temperature to 120 under stirring; Other embodiments are identical with embodiment 1, obtain chloroneb 34.5g between compound, yield 60.5%.
Embodiment 11
In reactor by 58.8g, the Meta Dichlorobenzene of 0.4mol, 462.9g, the massfraction of 2.4mol is 28% sodium methoxide solution and the N of 200ml, dinethylformamide mixes, add 5g, 0.05mol CuCl is as catalyzer simultaneously, steams methyl alcohol to ℃ again back flow reaction 12 hours of still temperature to 120 under stirring; Other embodiments are identical with embodiment 1, obtain chloroneb 32.9g between compound, yield 57.7%.
Embodiment 12
First organic solvent of the present embodiment is DMI, and other embodiments are identical with embodiment 1, obtains a chloroneb 35.2g, yield 82.5%.
Embodiment 13
First organic solvent of the present embodiment is DMI, and copper salt catalyst is oxysuccinic acid cuprous chloride catalyst, and other embodiments are identical with embodiment 1, obtains a chloroneb 38.7g, yield 90.6%.
The present invention adopts gas chromatography analysis method, and concrete data are as follows:
Gas chromatograph: Agilent 7820GC, countercharge chromatographic working station, microsyringe: 1ul detector: hydrogen flame ionization detector.
Test conditions
A. carrier gas and flow: the high pure nitrogen take 99.99% is carrier gas: flow is 50ml/min.
B. chromatographic column: the capillary column (ECI of the thick 0.25um of the long 30m of internal diameter 0.32mm tm--WAX)
C. tail wind drift amount 25ml/min
D. column temperature: 120 ℃~220 ℃
E. hydrogen: 35ml/min
F. temperature of vaporization chamber: 250 ℃
G. air: 400ml/min
H. detector temperature: 300 ℃
I. the amount of carrying out: 0.2ul
J. splitting ratio: 50:1.

Claims (6)

1. between, a synthetic method for chloroneb, is characterized in that, comprises the following steps:
(1) Meta Dichlorobenzene, sodium methylate and the first organic solvent are mixed, add mantoquita as catalyzer simultaneously, Meta Dichlorobenzene: sodium methylate: the mol ratio of mantoquita is 1:0.5~8:0.005~0.1, in every gram of Meta Dichlorobenzene, add the first organic solvent of 1.5~3.5ml, stirring reaction 3~24 hours under 75~150 ℃ of reflux temperatures;
(2) react complete, steam except organic solvent, add water, and use the second organic solvent extraction in raffinate, distillation or rectifying organic liquor obtain chloroneb between compound.
2. the synthetic method of a kind of chloroneb according to claim 1, it is characterized in that, in described step (1), the first organic solvent is selected from the one in o-Xylol, p-Xylol, DMF, N-Methyl pyrrolidone, DMI, oil of mirbane and methyl-phenoxide.
3. the synthetic method of a kind of chloroneb according to claim 1, is characterized in that, sodium methylate is one or both in solid sodium methylate and the massfraction sodium methoxide solution that is 28% in described step (1).
4. the synthetic method of a kind of chloroneb according to claim 1, is characterized in that, in described step (1), mantoquita is one or more in cupric oxide, cuprous chloride, cuprous bromide, oxysuccinic acid cuprous chloride catalyst.
5. the synthetic method of a kind of chloroneb according to claim 4, it is characterized in that, the preparation method of described oxysuccinic acid cuprous chloride catalyst is: by weight, and after the reaction of the aqueous solution of malic acid of two parts of weight contents 40~60% and a cuprous chloride, through suction filtration, dry and obtain.
6. the synthetic method of a kind of chloroneb according to claim 1, it is characterized in that, in described step (2), the second organic solvent is selected from benzene,toluene,xylene, oil of mirbane, chlorobenzene, bromobenzene, methylene dichloride, chloroform, tetracol phenixin, 1, the one in 2-ethylene dichloride and ethyl acetate.
CN201410035767.8A 2014-01-24 2014-01-24 Synthetic method of m-chloroanisole Pending CN103739452A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108456146A (en) * 2018-02-02 2018-08-28 浙江工业大学 Method for preparing aromatic ether by applying drug functional group to C-H methoxylation
CN114736128A (en) * 2022-03-10 2022-07-12 青岛科技大学 A kind of method for preparing o-aminophenyl ether

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407452A (en) * 2008-11-14 2009-04-15 浙江理工大学 Process for synthesizing o-chloro-anisole
CN102617257A (en) * 2012-02-24 2012-08-01 常州大学 Synthetic method of diol phenylate compounds

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407452A (en) * 2008-11-14 2009-04-15 浙江理工大学 Process for synthesizing o-chloro-anisole
CN102617257A (en) * 2012-02-24 2012-08-01 常州大学 Synthetic method of diol phenylate compounds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108456146A (en) * 2018-02-02 2018-08-28 浙江工业大学 Method for preparing aromatic ether by applying drug functional group to C-H methoxylation
CN108456146B (en) * 2018-02-02 2020-12-25 浙江工业大学 Method for preparing aromatic ether by applying drug functional group to C-H methoxylation
CN114736128A (en) * 2022-03-10 2022-07-12 青岛科技大学 A kind of method for preparing o-aminophenyl ether

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Application publication date: 20140423