The production process of one-step production of methyl anthranilate

Abstract

The invention relates to a production process for producing methyl anthranilate in one step. The technical scheme is that the specific steps are as follows: (1) below 0°C, add N-chlorophthalimide, methanol and water into the reaction vessel, wherein N-chlorophthalimide and methanol The molar ratio is 1:2~1:20; (2) According to the molar ratio of liquid caustic soda and N-chlorophthalimide is 1.2:1~3:1, add liquid caustic soda dropwise and stir 20 minutes; (3) After raising the temperature to 50-80°C and reacting for one hour, the temperature was naturally lowered, and the layers were separated after standing for ten hours, and the product methyl anthranilate was obtained in the lower layer. Beneficial effects are: the yield of the present invention is very high, less equipment is required for production, and the cost is low; the synthetic process of methyl anthranilate is completed in one reaction vessel; the waste water produced in the production process is less; and the indicators of COD and ammonia nitrogen are greatly improved. Reduced, little environmental pollution, simple production, safe, suitable for industrial production.

Description

technical field

[0001] The invention relates to a preparation method of methyl anthranilate, in particular to a production process for producing methyl anthranilate in one step. Background technique

[0002] Methyl anthranilate, also known as methyl anthranilate, the chemical formula is C 8 h 9 NO 2 , molecular weight 151.16, colorless crystal or light yellow liquid. Slightly soluble in water, insoluble in glycerin. The boiling point is 273°C, and the melting point is 24-25°C. It is a single spice with strong aroma and long-lasting fragrance. It is one of the edible spices. It is mostly used as a fragrance ingredient. It is abundant in grapes. It is mainly used in the preparation of grape, citrus loganberry, strawberry and watermelon flavors, and is also a necessary raw material for the preparation of artificial orange oil. Methyl anthranilate can also produce more than 60 kinds of spices. With the increase of human demand for edible spices, seeking industrial synthet...

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