Technological method for preparing m-aminophenol

A m-aminophenol and aminophenol technology, applied in the field of m-aminophenol preparation, can solve the problems of low yield and selectivity, high equipment requirements, serious pollution, etc., and achieve easy-to-obtain raw materials, high product yield, and simple operation Effect
CN107556201AActive Publication Date: 2018-01-09山西智创药研科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
山西智创药研科技有限公司
Publication Date
2018-01-09

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Abstract

The invention relates to a technological method for preparing m-aminophenol, belongs to the technical field of chemical material preparation and solves the technical problem of limit caused by utilizing phenyl acetate as a preparation raw material. The technological method disclosed by the invention has the advantages of simpleness in operation, high product yield, reaction easy to control and thelike. The technological method is characterized by comprising the steps: preparing 3-carboxyphenyl phenyl acetate after preparing m-cresyl acetate and utilizing the prepared 3-carboxyphenyl phenyl acetate to prepare the m-aminophenol. The technological method comprises the steps: a, taking a C9H8O4 solvent, adding into an ethyl acetate solution, fully stirring until complete dissolution, dropwiseadding thionyl chloride into a system under the ice water bath condition, thermally insulating 1+ / -0.5 hours, warming to 60 DEG C and refluxing; b, under the ice water bath condition, adding triethylamine and hydroxylamine hydrochloride into the system, thermally insulating for 2 hours and warming to a room temperature; c, spin drying the solvent on a rotary evaporator, then adding water and potassium carbonate, warming to 60 to 70 DEG C and hydrolyzing; d, utilizing ethyl acetate to extract the solution, utilizing a thin-layer chromatography to determine whether extraction is complete and obtaining the finished product of the m-aminophenol after the extraction is finished.
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Description

technical field

[0001] The invention belongs to the technical field of chemical material preparation, in particular to a process for preparing m-aminophenol. Background technique

[0002] Meta-aminophenol is an important fine chemical raw material and organic intermediate, which is widely used in petrochemical industry, pesticide, medicine, dyestuff and other fields. So far, a variety of processes for the synthesis of m-aminophenol have been developed, mainly including nitrobenzene method, resorcinol ammonolysis method, m-nitrophenol electrolysis method, aniline hydroxylation method and m-phenylenediamine hydrochloric acid hydrolysis method, etc. , but most of them have the problems of backward technology, serious pollution, high cost, low yield and selectivity, and high requirements for equipment. Contents of the invention

[0003] The object of the present invention is to overcome the defective of prior art, a kind of processing method of preparing m-aminophenol is prov...

Claims

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