A kind of production method of anthranil

A technology of anthranil and o-nitroanisole, which is applied in the production field of anthranil, can solve the problem of different product production, output, quality, energy consumption, emission, and process methods that cannot be solved from a comprehensive perspective and other issues to achieve high production efficiency, simple process, and good product quality

Active Publication Date: 2011-12-14
LIAONING SHIXING PHARMA & CHEM
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Problems solved by technology

[0007] The technical solutions of the above patent applications can produce anthranilic ether products, but the process methods are different, and the technical p

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Embodiment Construction

[0013] Product name: o-aminoanisole, also known as o-methoxyaniline or o-fennel.

[0014] Product Molecular Formula: C 7 h 9 NO.

[0015] Physical and chemical properties of the product: freezing point: ≥ 6.3°C, boiling point: 224°C (0.1Mpa), 90°C (0.533Kpa), relative density: 1.097 (20 / 4), refractive index: 1.5713, flash point: 98°C, solubility: in 1.5% in water (20°C), easily soluble in ethanol, ether, acetone, benzene, chloroform and dilute acid, can volatilize with water vapor.

[0016] The appearance of anthraniloid is light red or light yellow oily liquid, which turns dark brown when exposed to air.

[0017] In the production of o-aminoanisole in the present invention, o-nitrochlorobenzene is used as a raw material to carry out methoxylation reaction with sodium methoxide to obtain o-nitroanisole. Then o-nitroanisole is hydrogenated and reduced with methanol as a solvent under the action of a catalyst to obtain anthraniloanisole; the reactant is dealcoholized, dehydr...

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Abstract

The invention provides a production method of oamino pheylmethyl ether, and the method comprises the following steps of: reacting ortho nitrochlorobenzene serving as a raw material with sodium methoxide for carrying out a methoxylation reaction to obtain orthonitroanisole; secondly, carrying out hydrogenation reduction on the orthonitroanisole by using methanol as a solvent in the presence of a catalyst to prepare the oamino pheylmethyl ether; and finally, carrying out dealcoholization, dehydrogenation and refining on reactants to obtain the oamino pheylmethyl ether as a finished product. The production process comprises the following steps of: preparing sodium methoxide, etherifying the ortho nitrochlorobenzene, distilling the methanol and nitroether for separation, hydrogenating the orthonitroanisole, distilling a hydrogenating solution for separating the oamino pheylmethyl ether and treating wastewater. The production method has the characteristics of simple process, short procedure, continuity in reaction, high production efficiency, good product quality, less energy consumption, concentrated purification of reaction wastewater and no emission, and is suitable for producing the oamino pheylmethyl ether by using the ortho nitrochlorobenzene as the raw material.

Description

technical field [0001] The present invention proposes a method for compounding substances in the field of chemical industry, specifically a production method for anthranil. Background technique [0002] Patent No. 200910033501.9 is a method for producing aminoanisole by reacting mixed nitrochlorobenzenes in an aqueous solvent. [0003] Mix nitrochlorobenzene (including o-nitrochlorobenzene, p-nitrochlorobenzene and m-nitrochlorobenzene) in aqueous solution to produce aminoanisole through steps such as etherification, hydrogenation, rectification and separation. The process is: (1) Mix nitrochlorobenzene and methanol to react: water is used as solvent and sodium hydroxide is used as catalyst; (2) water phase is separated; (3) etherified oil is catalytically hydrogenated: etherified oil does not need to be washed with water In addition to alkali, water can be used as a solvent for direct hydrogenation reduction; (4) filter the catalyst; (5) separate the crude product: cool, s...

Claims

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Application Information

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IPC IPC(8): C07C217/84C07C213/02
Inventor 董大为王文勇赵志刚高华唯马洪茹李春雨
Owner LIAONING SHIXING PHARMA & CHEM
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