Pyrazolopyrimidines

A compound of formula (I)

• in which the symbols are as defined below:
• R1 represents hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl or optionally substituted heterocyclyl, hydroxyl, optionally substituted alkoxy, amino, optionally substituted alkylamino or optionally substituted dialkylamino;
• R2 represents hydrogen or alkyl;
• or
• R1 and R2 together with the nitrogen atom to which they are attached represent an optionally substituted heterocyclic ring;
• R3 represents optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, optionally substituted aralkyl, halogen, an optionally substituted amino group, optionally substituted (C1-C8)-alkoxy, optionally substituted (C1-C8)-alkylthio, optionally substituted (C6-C10)-aryloxy, optionally substituted (C6-C10)-arylthio, optionally substituted heterocyclyloxy, optionally substituted (C6-C10)-aryl-(C1-C4)-alkoxy, optionally substituted (C6-C10)-aryl-(C1-C4)-alkylthio, optionally substituted heterocyclyl-(C1-C4)-alkoxy, optionally substituted heterocyclyl-(C1-C4)-alkylthio, C(S)OR8, C(O)SR8 or C(S)SR8;
• R4 represents CONR6R7;
• R5 represents H, halogen, optionally halogen-substituted alkyl or optionally halogen-substituted cycloalkyl, O—(C1-C4)-alkyl or S(O)0-2(C1-C4)-alkyl;
• X represents halogen, cyano, hydroxyl, optionally substituted alkyl, (C1-C3)-haloalkyl, optionally substituted alkoxy, optionally substituted phenyl, optionally substituted alkylthio, optionally substituted alkylsulphinyl or optionally substituted alkylsulphonyl;
• R6 represents H, a cation, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl and optionally substituted cycloalkenyl, optionally substituted aryl and optionally substituted arylalkyl;
• R7 represents COR8, S(O)1-2R8, cyano, COOR8, CON(R8)2, saturated, partially or fully unsaturated or aromatic, optionally substituted 5- or 6-membered heterocyclyl which optionally contains 1 or 2 further N, S or O atoms, where oxygen atoms are not adjacent to one another;
• R8 represents H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, aryl or optionally substituted aralkyl, optionally substituted haloalkyl;
• or two radicals R8 form a cycle having 3 to 6 carbon atoms which is saturated or partially unsaturated and optionally contains 1 or 2 further N, S or O atoms, where oxygen atoms are not adjacent to one another;
• or
• R6 and R8 together with the N—CO or N—S(O)1-2 group to which they are attached form a 4- to 8-membered cycle which may contain one or more heteroatoms selected from the group consisting of sulphur, oxygen and nitrogen, where oxygen atoms are not adjacent to one another;
• and agrochemically active salts thereof.