Pyridazine derivative, its preparation and selective herbicide
专利汇可以提供Pyridazine derivative, its preparation and selective herbicide专利检索，专利查询，专利分析的服务。并且NEW MATERIAL:The compound of formulaI[X is halogen; Y is group of formula II (R
1 is H or lower alkyl; R
2 is alkyl, alkenyl, phenyl, or alkyl or alkenyl substituted with alkoxy or alkylthio) or formula III (A is O, S, NH or CH
2 ; m+n is 3W5)].
EXAMPLE: Acetoxime 0-(6-chloro-3-phenyl-4-pyridazinyl) ether.
USE: Selective herbicide exhibiting high weed killing effect by scattering an extremely small amount of the compound to the leaves or stalks of the weeds, espceially broad-leaved weeds such as wild spinach, barnyardgrass, smartweed, etc. at the growing stage after the germination. Rate of application: ≥50 grams of the active component per 10 are.
PROCESS: The compound of formulaIcan be prepared by reacting the compound of formula IV with the oxime compound of formula HON=Y in an inert solvent in the prescene of an acid acceptor (e.g. metallic sodium, NaH, etc.) at a temperature between the room temperature and the boiling point of the solvent for 30minutesWseveral hours.
COPYRIGHT: (C)1982,JPO&Japio，下面是Pyridazine derivative, its preparation and selective herbicide专利的具体信息内容。
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5 液体除草制剂
