| abstract |
NEW MATERIAL: 3-Phenoxypyrazoles wherein the phenyl ring has a p-nitro substituent and the pyrazole ring has a (halo)methyl or a (halo)ethyl substituent at 1-position, a methyl substituent at 4-position and Cl, CN, a halomethyl, a haloethyl, methylthio, ethylthio, methyl- or ethylsulfunyl, methyl- or ethylsulfonyl or methoxymethyl substituent at 5-position, or their salts. n EXAMPLE: 5-Trifluoromethyl-4-methyl-3-(5'-methoxy-4'-nitrophenoxy)-1- methylpyrazole of formula. n USE: A herbicide for use before and after germination. n PROCESS: 2,4-dichloronitrobenzene is reacted with at least 2 equivalent properly substd. 3-hydroxypyrazole and the product obtd. is reacted with a nucleophilic reactive substance (oxides, thiolates and amines). n COPYRIGHT: (C)1990,JPO |