Herbicidal pyridinesulfonamides, preparation and use thereof and compositions containing them
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0013480A2
公开(公告)日:1980-07-23
Pyridinesulfonamides of a general formula
and their agriculturally suitable salts wherein:
R1 and R2 are H or various substituents;
R3 and R. are independently H or CH3;
W is O or S: and
R is a pyrimidyl or triazinyl residue which may be substituted;
are of interest as herbicides for preemergence or post- emergence application and for regulating plant growth. The compounds can be made e.g. by reacting an appropriate pyridylsulfonyl isocyanate or isothiocyanate with an appropriate amino- or methylamino-substituted pyrimidine or triazine. The compounds can be formulated for use in conventional manner.
通式为吡啶磺酰胺及其农业上适用的盐类,其中:R1 和 R2 为 H 或各种取代基;R3 和 R 独立地为 H 或 CH3;W 为 O 或 S;R 为可被取代的嘧啶基或三嗪基残基。 这些化合物可用作除草剂,用于萌芽前或萌芽后施药以及调节植物生长。 例如,可通过将适当的吡啶磺酰基异氰酸酯或异硫氰酸酯与适当的氨基或甲氨基取代的嘧啶或三嗪反应来制造这些化合物。 这些化合物可按常规方式配制使用。