发明授权
US5328896A Preparing herbicidal sulphonylurea salts 失效
制备除草磺酰脲盐

Preparing herbicidal sulphonylurea salts
摘要:
A herbicidal sulphonylurea salt of the formula ##STR1## in which M.sup..sym. represents an alkali metal ion or the counterion, formed by protonation, of a basic organic nitrogen compound,R represents halogenoalkyl,R.sup.1 represents optionally substituted radicals from the series comprising alkyl, alkenyl, alkinyl or aralkyl,R.sup.2 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, halogenoalkylthio, amino, alkylamino or dialkylamino,X represents nitrogen or a --CH group,Y represents nitrogen or a --CR.sup.3 group where R.sup.3 represents hydrogen, halogen, cyano, alkyl, formyl, alkyl-carbonyl or alkoxy-carbonyl, andZ represents nitrogen or a --CR.sup.4 group where R.sup.4 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, alkylamino or dialkylamino.
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