Derivatives of N-phenylpyrazoles

摘要

N-Phenylpyrazole derivatives of the formula: wherein R1 represents cyano, nitro, halogen, acetyl or formyl; R2 represents R5SO2, R5SO or R5S in which R5 is optionally halogen substituted alkyl, alkenyl or alkynyl; R3 represents a hydrogen atom or a group NR6R7 wherein R6 and R7 each represent hydrogen, alkyl, alkenylalkyl, alkynylalkyl, formyl, optionally halogen substituted alkanoyl, optionally halogen substituted alkoxycarbonyl, or alkoxymethyleneamino, halogen, or R6 and R7 together form a cyclic imide and R4 represents a substituted phenyl group possess arthropodicidal, plant nematocidal, anthelmintic and anti-protozoal properties; their preparation, compositions containing them and their use are described.