1-[(O-(CYCLOPROPYLCARBONYL)PHENYL)SULFAMOYL]-3-(4,6-DIMETHOXY- -2-PYRIMIDINYL)UREA, METHOD AND INTERMEDIATE FOR THE PREPARATION THEREOF, HERBICIDAL AGENT, AND METHOD FOR SELECTIVELY CONTROLLING UNDESIRABLE PLANT SPECIES

A method for the preparation of a compound of formula (I) is characterised by reacting 2-amino-4,6-dimethoxypyrimidine with chlorosulfonyl isocyanate in the presence of methylene chloride and treating the thus formed reaction mixture with o-aminophenyl cyclopropyl ketone and triethylamine in the pre...

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Hauptverfasser: BRADY THOMAS E, CONDON MICHAEL E, MARC PIERRE A
Format: Patent
Sprache:eng ; slo
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Zusammenfassung:A method for the preparation of a compound of formula (I) is characterised by reacting 2-amino-4,6-dimethoxypyrimidine with chlorosulfonyl isocyanate in the presence of methylene chloride and treating the thus formed reaction mixture with o-aminophenyl cyclopropyl ketone and triethylamine in the presence of methylene chlorine. Also disclosed is o-aminophenyl cyclopropyl ketone, which is an intermediate of said compound. A herbicidal composition comprising a urea derivative of formula (I) and an inert carrier; a method for selectively controlling undesirable plant species in the presence of crops or in transplanted or direct-seeded rice.