Results for fluorobenzenepropionate translation from French to English

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French

4-triazol -1-yl ] -4-fluorobenzenepropionate par diazotation simultanée de 4-difluorométhyl -4

English

4-triazol -1-yl ] -4-fluorobenzenepropionate by the simultaneous diazotization of 4-difluoromethyl -4

Last Update: 2011-07-27
Usage Frequency: 1
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French

l'invention concerne un procédé de préparation de l'herbicide éthyle α-2-dichloro-5-[4-difluorométhyl)-4,5-dihydro-3-méthyl-5-oxo-1h-1,2,4-triazol-1-yl]-4-fluorobenzenepropionate par diazotation simultanée de 4-difluorométhyl-4,5-dihydro-3-méthyl-5-oxo-1-(5-amino-2-fluoro-4-chloro-phényl)-1h-1,2,4-triazole (qui est l'amine) et arylation de l'acrylate d'éthyle avec l'amine diazotée. dans le cadre de ce procédé, les réactifs ci-après sont ajoutés successivement et dans des conditions spécifiques à une solution refroidie et agitée de l'amine dans l'acétone: chlorure cuivreux, acide chlohydrique, acrylate d'éthyle et nitrite de sodium.

English

a process is disclosed for the preparation of the herbicide ethyle α-2-dichloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1h-1,2,4-triazol-1-yl]-4-fluorobenzenepropionate by the simultaneous diazotization of 4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1-(5-amino-2-fluoro-4-chloro-phenyl)-1h-1,2,4-triazole (the amine) and arylation of ethyl acrylate with the diazotized amine. in the process the following reagents are added in sequence and, under specified conditions, to a cooled, stirred solution of the amine in acetone: cuprous chloride, hydrochloric acid, ethyl acrylate, and sodium nitrite.

Last Update: 2011-07-27
Usage Frequency: 1
Quality:

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