Pyrazol-5-ether compound, and preparation method therefor and use thereof

A pyrazol-5-ether compound having a structure represented by Formula I:

• wherein
• R1 is selected from C1-C6 alkyl, C3-C6 cycloalkyl or phenyl group, which is substituted with at least one R8;
• R2 is selected from C1-C6 haloalkyl, C3-C6 cycloalkyl, methyl, cyano or phenyl group, the phenyl group is substituted with at least one R8;
• R3 is selected from hydrogen, halogen, cyano, C1-C6 alkyl or C1-C6 haloalkyl group;
• R4 is selected from halogen, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 haloalkyl or C1-C6 haloalkoxy group;
• R5 is selected from hydrogen, halogen, C1-C6 alkyl, C1-C6 alkoxy or C1-C6 haloalkyl group;
• R6 is selected from C1-C8 alkyl, C3-C6 cycloalkyl or C1-C6 haloalkyl group, which is substituted with at least one R8;
• R is selected from hydrogen or C1-C6 alkyl group;
• or R6 and R7, together with the nitrogen atom to which they are attached, form a 3- to 7-membered saturated cyclic group, the cyclic group may optionally contain an oxygen atom, a nitrogen atom or a sulfur atom, and the cyclic group may be further substituted with identical or different R8;
• and
• R8 is selected from hydrogen, halogen, cyano, nitro, hydroxyl, amino, C1-C6 alkyl, C1-C6 cycloalkyl, C1-C6 haloalkyl, C1-C6 alkoxy, C1-C6 haloalkoxy, amino substituted with C1-C6 alkyl, C1-C6 alkylcarbonylamino, C1-C6 haloalkylcarbonylamino, C1-C6 alkylsulfonylamino, N,N-di(C1-C6 alkyl) sulfonylamino, C1-C6 haloalkylsulfonylamino, heterocycloacylamino, C1-C6 alkylcarbonyl, C1-C6 alkyloxycarbonyl, cyano-substituted C1-C6 alkyl, C1-C6 alkylsulfinyl, C1-C6 alkylsulfonyl, C1-C6 haloalkylsulfinyl, C1-C6 haloalkylsulfonyl, substituted phenyl, a heterocyclic ring or heterocyclic-substituted C1-C6 alkyl group.