A kind of production technology that improves hexazinone yield

A production process and cycloazinone technology, applied in the field of cycloazinone, can solve the problems of incomplete reaction of raw materials, low yield of cycloazinone raw materials, etc., achieve uncomplicated reaction principle, practical reaction process control, and reduce residues Effect
CN112409279BActive Publication Date: 2022-05-03ANHUI GUANGXIN AGROCHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI GUANGXIN AGROCHEM
Publication Date
2022-05-03

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Abstract

The invention discloses a production process for improving the yield of hexazinone, comprising the following steps: step S1, first using cyanamide and ethyl chloroformate to generate ethyl cyanocarbamate, and then combining ethyl cyanocarbamate with dimethyl sulfate The ester synthesizes a methyl product under the catalytic condition of a catalyst; step S2, synthesizes a guanidine derivative with a methyl product and dimethylamine; step S3, uses chloroform to perform multiple extractions on the guanidine derivative; step S4, performs precipitation on the guanidine derivative Processing: step S5, reacting guanidine derivatives with cyclohexyl isocyanate to synthesize a hexazinone intermediate under the condition of toluene as a solvent; step S6, performing a cyclization reaction between the hexazinone intermediate and sodium methoxide to prepare hexazinone and washing with water; Step S7, purifying and drying hexazinone to obtain the technical product of hexazinone; the production process of the present invention is easy for industrial production and has strong practicability, and solves the technical problem of low yield of the technical product of hexazinone in the prior art.
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Description

Technical field

[0001] The present invention belongs to the field of cyclazinone technology, specifically, relates to a production process that improves the yield of cyclazinone. Background

[0002] Cyclazinone, also known as Wilbur, Lincaojing, Phenoxygen, Sentai, chemical name is 3-cyclohexyl-6-dimethylamino-1-methyl-1,3,5-triazine-2,4-dione, is a colorless, odorless crystalline solid, is an endository selective, post-bud touch pyrrobenzophenone herbicide.

[0003] Cyclazinone is mainly used in maintaining and opening up forest fire lanes, raising young forests, forest stand transformation and weeding and irrigation on railways, highways, airports, warehouses, docks, etc., and has special effects on the prevention of "Canada's yellow flowers". The product has a strong lethality on forest weeds, shrubs, vines and other plants, it can be absorbed by the stems and leaves of the plant, and the xylem is used inside the plant for conduction, and by directly interfering with the phot...

Claims

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