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Probenazole preparation method

A technology of allylbenzothiazole and allyl alcohol, which is applied in the field of pesticides, can solve the problems of high cost, unscientific formula compatibility, unfavorable promotion and application, etc., and achieves unique action mechanism, excellent foliar spraying effect, and good control effect Effect

Inactive Publication Date: 2010-08-11
TIANJIN XINWEI CHEM
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are unscientific prescription compatibility and high cost, which is not conducive to wide application

Method used

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Examples

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Embodiment Construction

[0034] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0035] A kind of allyl benzothiazole, its constitutive component, its property and its weight percent scope are respectively:

[0036] Insoluble saccharin (moisture 95.5%) 8-15

[0037] Dioxane (moisture 4 20 1.03-1.035) 25-30

[0038] Thionyl chloride (d 4 20 1.63-1.65) 10-15

[0039] Dimethylformamide (moisture 4 25 0.943-0.945) 0.8-1.2

[0040] Dichloromethane (water 4 20 1.32-1.33) 35-45

[0041] Allyl alcohol (moisture 20 20 0.85-0.855) 5-8.

[0042] A kind of preparation method of allyl benzothiazole, take insoluble saccharin as main raw material, carry out chlorination reaction with thionyl chloride under the action of contact medium dioxane and dimethylformamide to generate chlorinated saccharin, and then After the chlorin...

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Abstract

The invention relates to probenazole and a preparation method thereof. The preparation method comprises the following steps: insoluble saccharin is used as a main raw material; the insoluble saccharin and thionyl chloride are subjected to chlorination under the action of dioxane and dimethylformamide as catalysts, so as to form saccharin chloride; after the saccharin chloride is concentrated, thesaccharin chloride and allyl alcohol are subjected to etherification under the actions of methylene chloride as the catalyst, so as to form a crude probenazole product; and after the pH value of the crude probenazole product is adjusted, a finished product can be obtained by washing, drying and grinding the crude probenazole product. The probenazole prepared by the method has the advantages that the probenazole has unique action mechanism, is a plant inducer, has low activity to pathogenic bacteria or no antibacterial activity, can induce the disease resistance of host plants, can be used forwater surface treatment as well as bacteria culture boxes, greatly reduces production cost and power cost, and is a pesticide which is safe, low in toxicity and friendly to environment. Compared withother types of fungicides, the probenazole is characterized by safety, high efficiency and no pollution to environment.

Description

Technical field [0001] The invention belongs to the field of pesticides, in particular to a new type of pesticide that can effectively prevent and control rice blast disease - allylbenthiazole and its preparation method. Background technique [0002] The pesticide industry is a pillar industry in my country's agricultural development. Compared with earlier years, my country's pesticides have undergone major changes in terms of output and varieties, especially in terms of functions, which involve all aspects of agricultural production. Farmers also like to use new and efficient pesticide varieties to a certain extent. It is a trend for traditional pesticides to be replaced by new, efficient and low-toxic pesticides. After China’s accession to the WTO, China’s pesticide industry must keep up with the trend of world pesticide development and promote new and efficient pesticides. , low-toxic and environmentally friendly new pesticide varieties, and eliminating traditional highly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D275/02A01P3/00
Inventor 孟繁秋
Owner TIANJIN XINWEI CHEM
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