C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/259, 260/242
C07D 251/12 (2006.01) A01N 47/36 (2006.01) C07D 239/28 (2006.01) C07D 521/00 (2006.01)
Patent
CA 2032398
Abstract A process for preparing a sulphonylurea salt of the formula Image (I) in which M? represents an alkali metal ion or the counterion, formed by protonation, of a basic organic nitrogen compound, R represents halogenoalkyl, R1 represents optionally substituted radicals from the series comprising alkyl, alkenyl, alkinyl ox aral- kyl, R2 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, halogenoalkyl- thio, amino, alkylamino or dialkylamino, X represents nitrogen or a -CH group, Y represents nitrogen or a -CR3 group where R3 represents hydrogen, halogen, cyano, alkyl, formyl, alkyl-carbonyl or alkoxy-carbonyl, and Z represents nitrogen or a -CR4 group where R4 represents hydrogen, halogen, alkyl, halogeno- alkyl, alkoxy, halogenoalkoxy, alkylthio, alkylamino or dialkylamino, which comprises reacting a sulphonylurea of the formula Image (II) Le A 27 329 Abstract (continued) with an alkali metal hydroxide or with a basic organic nitrogen compound in the presence of a hydrocarbon as diluent at a temperature from about 0 to 100°C. Compounds wherein Y is nitrogen are new herbicides. Le A 27 329
Fest Christa
Feucht Dieter
Kirsten Rolf
Kluth Joachim
Lurssen Klaus
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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