Abstract: The present invention relates to new derivatives of the family of 3-arylpyrazoles of formula (I), their methods of preparation, the compositions containing them and their utilization for the protection of plants against fungal diseases.

Abstract: 3-arylpyrazole derivatives of the formula ##STR1## in which X.sub.1, X.sub.2, X.sub.3, X.sub.4 and X.sub.5, which are the same or different, are H, Hal, nitro, alkyl, alkoxy, Y is H, Hal, nitro, CN, alkyl, alkoxy, alkylthio or an optionally substituted amino; Ra is H, R(alkyl, phenyl, Het), C(V)-V'Ro or C(V)NR.sub.0 R'.sub.0 where: V and V' are O, S; R.sub.0 and R'.sub.0, H, R, R' optionally substituted by .alpha., which can be GR.sub.1, NZ.sub.1 Z.sub.2, SO.sub.2 NZ.sub.1 Z.sub.2, CVZ.sub.1 Z.sub.2, Rb is H or can form with Ra a hydrocarbon ring of 4-6 C, R.sub.1 and R.sub.2 are H, R.sub.0, R.sub.3, G1-T1-Rc, C(O)R.sub.0, NTT'. Said fungicides are useful in agriculture.

Abstract: 3-arylpyrazole derivatives of the formula ##STR1## in which X.sub.1, X.sub.2, X.sub.3, X.sub.4 and X.sub.5, which are the same or different, are H, Hal, nitro, alkyl, alkoxy, Y is H, Hal, nitro, CN, alkyl, alkoxy, alkylthio or an optionally substituted amino; Ra is H, R(alkyl, phenyl, Het), C(V)-V'Ro or C(V)NR.sub.0 R'.sub.0 where: V and V' are O, S; R.sub.0 and R'.sub.0, H, R, R' optionally substituted by .alpha., which can be GR.sub.1, NZ.sub.1 Z.sub.2, SO.sub.2 NZ.sub.1 Z.sub.2, CVZ.sub.1 Z.sub.2, Rb is H or can form with Ra a hydrocarbon ring of 4-6 C, R.sub.1 and R.sub.2 are H, R.sub.0, R.sub.3, G1-T1-Rc, C(O)R.sub.0, NTT'. Said fungicides are useful in agriculture.

Abstract: Phenylpyrazoles of the formula: ##STR1## in which: X=H, hal, NO.sub.2, CN, SCN, alkyl (C.sub.1 -C.sub.4), alkenyl (C.sub.2 -C.sub.4), alkynyl (C.sub.2 -C.sub.4), alkoxy (C.sub.1 -C.sub.4), alkylthio (C.sub.1 -C.sub.4), phenyl, phenoxy; mono- or di- alkyl- or phenyl- amino; alkylcarbonyl, carbamoyl, carboxyl, benzoyl; alkyl- sulphinyl or sulphonyl;Y, Z=H, hal, OH, NO.sub.2, NO, CN, SCN, alkyl (C.sub.1 -C.sub.4), alkenyl (C.sub.2 -C.sub.4), alkynyl (C.sub.2 -C.sub.4), alkoxy (C.sub.1 -C.sub.4), alkylthio (C.sub.1 -C.sub.4), phenyl, phenoxy; mono- or di- alkyl- or phenyl- amino; alkylcarbonyl, carbamoyl, carboxyl, benzoyl; alkyl- sulphinyl or sulphonyl, for example; andY, Z may also form a bridge of 1 to 4 atoms, of which at least one can be a hetero atom, optionally substituted. The products are useful as fungicides in agriculture.

Abstract: Phenylpyrazoles of the formula: ##STR1## in which: X.dbd.H, hal, NO.sub.2, CN, SCN, alkyl (C.sub.1 -C.sub.4), alkenyl (C.sub.2 -C.sub.4), alkynyl (C.sub.2 -C.sub.4), alkoxy (C.sub.1 -C.sub.4), alkylthio (C.sub.1 -C.sub.4), phenyl, phenoxy; mono- or di- alkyl- or phenyl- amino; alkylcarbonyl, carbamoyl, carboxyl, benzoyl; alkyl- sulphinyl or sulphonyl;Y, Z.dbd.H, hal, OH, NO.sub.2, NO, CN, SCN, alkyl (C.sub.1 -C.sub.4), alkenyl (C.sub.2 -C.sub.4), alkynyl (C.sub.2 -C.sub.4), alkoxy (C.sub.1 -C.sub.4), alkylthio (C.sub.1 -C.sub.4), phenyl, phenoxy; mono- or di- alkyl- or phenyl- amino; alkylcarbonyl, carbamoyl, carboxyl, benzoyl; alkyl- sulphinyl or sulphonyl, for example; andY, Z may also form a bridge of 1 to 4 atoms, of which at least one can be a hetero atom, optionally substituted. The products are useful as fungicides in agriculture.