Synthesis process of primisulfuron-methy and other fluoric hebicide
A technology for fluoxulfuron-methyl and herbicides is applied in the field of synthesizing fluorine-containing herbicides, which can solve the problems of low yield and ozone layer destruction in the synthesis method, and achieve the effects of improving the yield and protecting the atmospheric environment.
Inactive Publication Date: 2003-08-20
肖深初
0 Cites 0 Cited by
AI-Extracted Technical Summary
Problems solved by technology
View more
Abstract
The synthesis process of primisulfuron-methyl and other fluoric herbicide incldues the reaction between fluorosulfuryl ethanoyl difluoride as fluorinating reagent and aza compound precurser in the molar ratio of 1.5-2.5 to 1 while adding polar compound as solvent and salt as catalyst at 20-80 deg.c for 2-4 hr; filtering; evaporating filtrate and washing residue with acid or alkali solution; and purification of the coarse product to obtain fluoric herbicide product or intermediate, which may be further produced into fluoric herbicide through available technological process. Using fluorosulfuryl ethanoyl difluoride, rather than freon, as fluorinating reagent has high yield and no damage to ozone layer of atmosphere.
Application Domain
BiocideAnimal repellants +1
Technology Topic
SolventChemistry +5
Examples
- Experimental program(1)
Example Embodiment
PUM


Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
Similar technology patents
Process for the manufacture of (poly-)isocyanates in the gas phase
Owner:COVESTRO DEUTSCHLAND AG
Inorganic oxide conductive powder/polyaniline conductive polymer composite material and its preparation method
Owner:SOUTHWEST UNIVERSITY
Hot cleaning furnace with double purifying treatment function
Owner:班戈设备系统(苏州)有限公司
Classification and recommendation of technical efficacy words
- protect the atmosphere
- high yield
Hot cleaning furnace with double purifying treatment function
Owner:班戈设备系统(苏州)有限公司