METHOD FOR PREPARING METHYL 4-[(4,5-DIHYDRO-3-METHOXY-4-METHYL-5-OXO-1H-1,2,4-TRIAZOL-1-YL)CARBONYL)SULFAMOYL]-5-METHYLTHIOPHENE-3-CARBOXYLATE
申请人:Bayer CropScience Aktiengesellschaft
公开号:US20200048234A1
公开(公告)日:2020-02-13
The invention relates to a method for preparing methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo-1H-1,2,4-triazol-1-yl)carbonyl)sulfamoyl]-5-methylthiophene-3-carboxylate from 4-methoxycarbonyl-2-methylthiophene-3-sulfonyl chloride in the presence of an imidazole base substituted in the 1-position or in the presence of a mixture of bases comprising an imidazole base substituted in the 1-position (N-alkylimidazole).
The invention relates to novel substituted thienyl(amino)sulphonylureas of the general formula (I)
in which A, Q, R
1
, R
2
, R
3
, R
4
and R
5
are each as defined in the description, to processes for their preparation and to their use as herbicides.
Substituierte N-Pyrimidinyl-N'-thienyl(amino)sulfonylharnstoffe als Herbizide
申请人:Bayer CropScience AG
公开号:EP1598351A1
公开(公告)日:2005-11-23
Die Erfindung betrifft neue substituierte Thienyl(amino)sulfonylharnstoffe, der allgemeinen Formel (I),
in welcher A, Q, R1, R2, R3, R4 und R5 die in der Beschreibung angegebene Bedeutung haben,
Verfahren zu ihrer Herstellung und ihre Verwendung als Herbizide.