1-aryl-5-alkyl pyrazole derivative compounds, processes of making and methods of using thereof

1. A 1-aryl-5-alkyl pyrazole compound of formula (I):

wherein:

R 1 is hydrogen, cyano, halogen, R 8 , formyl, —C(O)R 8 , —C(O)OR 8 , —C(O)NR 9 R 10 , or —C(S)NH 2 ;

R 2 is R g or —S(O) m R 11 ;

R 3 is methyl, ethyl or C 1 -C 4 haloalkyl;

R 4 , R 5 and R 7 are independently hydrogen, halogen, alkyl, haloalkyl, cyano or nitro;

R 6 is halogen, alkyl, haloalkyl, alkoxy, haloalkyloxy, cyano, nitro, —C(O)R 12 , —S(O) n R 12 or SF 5 ;

Z is a nitrogen atom or C—R 13 ;

R 8 is alkyl, haloalkyl, cycloalkyl or halocycloalkyl;

R 9 is hydrogen, alkyl, haloalkyl or alkoxy;

R 10 is hydrogen, alkyl, haloalkyl or alkoxy;

R 11 is alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or cycloalkyl;

R 12 is alkyl or haloalkyl;

R 13 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, alkoxy or haloalkoxy;

m is 0, 1 or 2; and

n is 0, 1 or 2; or

a salt thereof.

2. The compound of claim 1 , wherein:

R 1 is hydrogen, cyano, halogen, R 8 , formyl, —C(O)R 8 , —C(O)OR 8 , —C(O)NR 9 R 10 , or —C(S)NH 2 ;

R 2 is C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, or —S(O) m R 11 ,

R 3 is methyl, ethyl or C 1 -C 4 haloalkyl,

R 4 , R 5 and R 7 are independently hydrogen, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, cyano or nitro;

R 6 is halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy, C 1 -C 4 haloalkyloxy, cyano, nitro, —C(O)R 12 , —S(O) n R 12 or SF 5 ;

Z is a nitrogen atom or C—R 13 ;

R 8 is C 1 -C 4 alkyl, C 1 -C 4 haloalkyl or cycloalkyl optionally substituted with one or more halogens;

R 9 is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl or C 1 -C 4 alkoxy;

R 10 is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl or C 1 -C 4 alkoxy;

R 11 is C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 2 -C 4 alkenyl, C 2 -C 4 haloalkenyl, C 2 -C 4 alkynyl, C 2 -C 4 haloalkynyl or cycloalkyl;

R 12 is C 1 -C 4 alkyl or C 1 -C 4 haloalkyl;

R 13 is hydrogen, halogen, cyano, nitro, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy;

m is 0, 1 or 2; and

n is 0, 1 or 2; or

a salt thereof.

3. The compound of claim 2 , wherein:

R 1 is hydrogen, cyano, fluoro, chloro, R 8 , formyl, —C(O)R 8 , —C(O)OR 8 , —C(O)NR 9 R 10 , or —C(S)NH 2 ;

R 2 is C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl, C 1 -C 2 chloroalkyl or —S(O) m R 11 ;

R 3 is methyl or ethyl optionally substituted with one to three halogens;

R 4 , R 5 and R 7 are independently hydrogen, fluoro, chloro, C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl, C 1 -C 2 chloroalkyl, cyano or nitro;

R 6 is fluoro, chloro, C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl, C 1 -C 2 chloroalkyl, C 1 -C 2 alkoxy, C 1 -C 2 fluoroalkyloxy, C 1 -C 2 chloroalkyloxy, cyano, nitro, —C(O)R 12 , —S(O) n R 12 or SF 5 ;

Z is a nitrogen atom or C—R 13 ;

R 8 is C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl or C 1 -C 2 chloroalkyl;

R 9 is hydrogen, C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl, C 1 -C 2 chloroalkyl or C 1 -C 2 alkoxy;

R 10 is hydrogen, C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl, C 1 -C 2 chloroalkyl or C 1 -C 2 alkoxy;

R 11 is C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl, C 1 -C 2 chloroalkyl, C 2 -C 4 alkenyl, C 2 -C 4 fluoroalkenyl, C 2 -C 4 chloroalkenyl, C 2 -C 4 alkynyl, C 2 -C 4 fluoroalkynyl or C 2 -C 4 chloroalkynyl;

R 12 is C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl or C 1 -C 2 chloroalkyl;

R 13 is hydrogen, fluoro, chloro, cyano, nitro, C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl, C 1 -C 2 chloroalkyl, C 1 -C 2 alkoxy, C 1 -C 2 fluoroalkoxy or C 1 -C 2 chloroalkoxy;

m is 0, 1 or 2; and

n is 0, 1 or 2; or

a salt thereof.

4. The compound of claim 2 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is methyl or ethyl optionally substituted with one to three halogens;

R 4 , R 5 , R 7 are independently hydrogen or halogen;

R 6 is C 1 -C 4 haloalkyl, C 1 -C 4 haloalkoxy or SF 5 ;

R 11 is C 1 -C 4 haloalkyl;

R 13 is C 1 -C 4 alkyl optionally substituted with one or more halogen atoms, or halogen; and

m is 0, 1 or 2; or

a salt thereof.

5. The compound of claim 3 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is methyl, ethyl, —CH 2 F or —CHF 2 ;

R 4 , R 5 , and R 7 are independently hydrogen, chloro or fluoro;

R 6 is —CF 3 , —OCF 3 or —SF 5 ;

R 11 is —CF 3 , —CClF 2 or —CCl 2 F;

R 13 is methyl, chloro or fluoro; and

m is 0, 1 or 2; or

a salt thereof.

6. The compound of claim 3 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is methyl, ethyl, —CH 2 F or —CHF 2 ;

R 4 is hydrogen, Cl or F;

R 5 and R 7 are both hydrogen;

R 6 is —CF 3 , —OCF 3 or —SF 5 ;

R 11 is —CF 3 , —CClF 2 or —CCl 2 F;

R 13 is methyl, chloro or fluoro; and

m is 0, 1 or 2; or

a salt thereof.

7. The compound of claim 2 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is methyl or ethyl,

R 4 , R 5 , R 7 are independently hydrogen or halogen;

R 6 is C 1 -C 4 haloalkyl, C 1 -C 4 haloalkoxy or SF 5 ;

R 11 is C 1 -C 4 haloalkyl;

R 13 is C 1 -C 4 alkyl optionally substituted with one or more fluoro or chloro, or halogen; and

m is 0, 1 or 2; or

a salt thereof.

8. The compound of claim 3 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is methyl or ethyl;

R 4 , R 5 , and R 7 are independently hydrogen, chloro or fluoro;

R 6 is —CF 3 , —OCF 3 or —SF 5 ;

R 11 is —CF 3 , —CClF 2 or —CCl 2 F;

R 13 is methyl, chloro or fluoro; and

m is 0, 1 or 2; or

a salt thereof.

9. The compound of claim 3 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is methyl or ethyl;

R 4 is hydrogen, Cl or F;

R 5 and R 7 are both hydrogen;

R 6 is —CF 3 , —OCF 3 or —SF 5 ;

R 11 is —CF 3 , —CClF 2 or —CCl 2 F;

R 13 is methyl, chloro or fluoro; and

m is 0, 1 or 2; or

a salt thereof.

10. The compound of claim 2 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is methyl or ethyl substituted with one to three halogens;

R 4 , R 5 , and R 7 are independently hydrogen or halogen;

R 6 is C 1 -C 4 haloalkyl, C 1 -C 4 haloalkoxy or —SF 5 ;

R 11 is C 1 -C 4 haloalkyl;

R 13 is C 1 -C 4 alkyl or halogen; and

m is 0, 1 or 2; or

a salt thereof.

11. The compound of claim 3 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is —CH 2 F, or —CHF 2 ;

R 4 is hydrogen, fluoro or chloro;

R 5 and R 7 are both hydrogen;

R 6 is —CF 3 , —OCF 3 or SF 5 ;

R 11 is —CF 3 , —CClF 2 or —CCl 2 F;

R 13 is methyl, fluoro or chloro; and

m is 0, 1 or 2; or

a salt thereof.

12. The compound of claim 3 , wherein:

R 1 is cyano;

R 2 is —S(O) m R 11 ;

R 3 is —CH 2 F, or —CHF 2 ;

R 4 is Cl;

R 5 and R 7 are both hydrogen;

R 6 is —CF 3 , —OCF 3 or —SF 5 ;

R 11 is —CF 3 , —CClF 2 or —CCl 2 F;

R 13 is chloro or fluoro; and

m is 0, 1 or 2; or

a salt thereof.

13. A composition for treatment of animals against ectoparasites comprising the compound of claim 1 and an acceptable carrier.

14. The composition of claim 13 , wherein the composition is in the form of a topical, dermal or subdermal formulation.

15. The composition of claim 13 , wherein the composition is in the form of a microemulsion, paste, pour-on formulation, ready-to-use formulation, spot-on formulation, oral solution, emulsion, injectable solution, suspension or enteric formulation.

16. The composition of claim 13 , further comprising an additional pesticidally active ingredient.

17. The composition of claim 16 , wherein the additional pesticidally active ingredient is selected from the group consisting of arylpyrazoles, nodulisporic acid or derivatives thereof, macrocyclic lactones, formamidines, pyrethroids, insect growth regulators, benzenedisulfonamide compounds, cestodal agents, pyridylmethyl derivatives, depsipeptides, metaflumazone and mixtures thereof.

18. A method for the therapeutic and/or prophylactic treatment of an animal against an ectoparasite and/or an endoparasite comprising administering an effective amount of the compound of claim 1 to the animal in need thereof.

19. The method of claim 18 , wherein the treatment is against an ectoparasite selected from the group consisting of arthropods, acarina and mixtures thereof.

20. The method of claim 18 , wherein the ectoparasite is selected from the group consisting of fleas, flies, lice, mites and ticks.

21. The method of claim 18 , wherein the treatment is against an endoparasite.

22. An insecticidal composition comprising a compound of formula I according to claim 1 and an acceptable carrier.

23. A method for the preparation of the pesticidal composition of claim 13 comprising mixing one or more compounds of the formula (I) according to claim 1 with one or more extenders and/or surface-active substances.

24. A method for controlling pests, comprising contacting the pests or their environment with a compound of formula (I) according to claim 1 or a composition according to claim 22 .

25. The method of claim 24 , wherein the environment comprises plants, plant parts, seeds, soils, areas, materials or spaces.

26. The method of claim 25 , wherein transgenic plants are contacted with the compound.

27. A process for the preparation of the compound of claim 1 , which comprises:

(i) reacting a compound of formula (V)

with a compound of formula (IV)

wherein R A is selected from alkylcarbonyl, alkoxycarbonyl, cyano and nitro;

R 1 is hydrogen, cyano, halogen, R 8 , formyl, —C(o)R 8 , —C(o)NR 9 R 10 , or —C(s)NH 2 ;

R 2 is R 8 or —S(O) m R 11 ;

R 4 , R 5 and R 7 are independently hydrogen, halogen, alkyl, haloalkyl, cyano or nitro;

R 6 is halogen, alkyl, haloalkyl, alkoxy, haloalkyloxy, cyano, nitro, —C(O)R 12 , —S(O) m R 12 or SF 5 ;

Z is a nitrogen atom or C—R 13 ;

R 8 is alkyl, haloalkyl, cycloalkyl or halocycloalkyl;

R 9 is hydrogen, alkyl, haloalkyl or alkoxy;

R 10 is hydrogen, alkyl, haloalkyl or alkoxy;

R 11 is lkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or cycloalkyl;

R 12 is alkyl or haloalkyl;

R 13 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, alkoxy or haloalkoxy;

m is 0, 1 or 2; and

n is 0, 1 or 2;

in the presence of a metal halide salt to form a compound of formula (III):

(ii) dehalogenating the compound of formula (III) to form a compound of formula (II):

(iii) oxidatively cleaving of compound of formula (II) to form a compound of claim (IIa):

(iv) reducing and halogenating the compound of formula (IIa) to form the compound of formula (IIb):

and

(v) optionally, further derivatizing the compound of formula (IIb) to form the compound of formula (I).

28. A compound of formula (Ia):

wherein:

R 1 is hydrogen, cyano, halogen, R 8 , formyl, —C(O)R 8 , —C(O)OR 8 , —C(O)NR 9 R 10 , or —C(S)NH 2 ;

R 2 is R 8 or —S(O) m R 11 ;

R 3 is a methyl or ethyl, each optionally substituted with 1 to 3 halogens which may be the same or different or —OH;

R 4 , R 5 and R 7 are independently hydrogen, halogen, alkyl, haloalkyl, cyano or nitro;

R 6 is halogen, alkyl, haloalkyl, alkoxy, haloalkyloxy, cyano, nitro, —C(O)R 12 , —S(O) n R 12 or SF 5 ;

Z is a nitrogen atom or C—R 13 ;

R 8 is alkyl, haloalkyl, cycloalkyl or halocycloalkyl;

R 9 is hydrogen, alkyl, haloalkyl or alkoxy;

R 10 is hydrogen, alkyl, haloalkyl or alkoxy;

R 11 is alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or cycloalkyl;

R 12 is alkyl or haloalkyl;

R 13 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, alkoxy or haloalkoxy;

m is 0, 1 or 2; and

n is 0, 1 or 2; or

a salt thereof.

29. A process for the preparation of the compound of claim 1 , which comprises:

(i) reacting a compound of formula (II):

 with a compound of formula R 2 —Y to produce a compound of formula (III):

 wherein

R a is R 8 , —O—R 8 or NR 9 R 10

R 2 is R 8 or —S(O) m R 11 ;

R 3 is methyl, ethyl or C 1 -C 4 haloalkyl;

R 8 is alkyl, haloalkyl, cycloalkyl or halocycloalkyl;

R 9 is hydrogen, alkyl, haloalkyl or alkoxy;

R 10 is hydrogen, alkyl, haloalkyl or alkoxy;

R 11 is alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or cycloalkyl;

m is 0, 1 or 2; and

Y is a leaving group;

(ii) reacting the compound of formula (III) with a compound of formula (Va) or salt thereof:

 to produce a compound of formula (VI):

 wherein Ra, R 2 , R 3 are as defined above; and

R 4 , R 5 and R 7 are independently hydrogen, halogen, alkyl, haloalkyl, cyano or nitro;

R 6 is halogen, alkyl, haloalkyl, alkoxy, haloalkyloxy, cyano, nitro, —C(O)R 12 , —S(O) n R 12 or SF 5 ;

Z is a nitrogen atom or C—R 13 ;

R 12 is alkyl or haloalkyl;

R 13 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, alkoxy or haloalkoxy; and

n is 0, 1 or 2; and

(iii) optionally de-esterifying the ester moiety of formula (VI), wherein R a is O—R 8 and R 8 is as defined above, by base catalyzed hydrolysis and subsequent acidification to form the compound corresponding to formula (VIa):

 and

(iv) derivatizing the compound of formula (VIa) to produce the compound of formula (I).

30. The process of claim 29 , wherein step (iv) is selected from the group consisting of:

(a) a decarboxylation step;

(b) reacting the compound of formula (VIa), with HNR 9 R 10 ;

(c) (i) reducing the —CO 2 H moiety to —CH 2 OH;

(ii) oxidizing the —CH 2 OH group to form —CHO;

(iii) reacting the —CHO group with a Grignard reagent R 8 —Mg-halogen;

(iv) subjecting the compound to an additional oxidation step;

(d) (i) reacting the —CO 2 H moiety of (VIa) with an reagent to form the corresponding N-methoxy-N-methyl amide; and

(ii) reacting the N-methoxy-N-methyl amide with a Grignard reagent R 8 —Mg-halogen or an organolithium reagent R 8 —Li.

31. A process for the preparation of the compound of formula (I) of claim 1 , which comprises:

(i) reacting the compound of formula (III) with hydrazine or salt thereof to form the compound of formula (IV):

 wherein R a is R 8 , —O—R 8 or NR 9 R 10 ;

R 2 and R 8 or —S(O) m R 11 ;

R 3 is methyl, ethyl or C 1 -C 4 haloalkyl;

R 8 is alkyl, haloalkyl, cycloalkyl or halocycloalkyl;

R 9 is hydrogen, alkyl, haloalkyl or alkoxy;

R 10 is alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or cycloalkyl;

m is 0, 1 is 2;

and

(ii) reacting the compound of formula (IV) with the compound of formula (Vb) to form the compound of formula (VI):

 wherein R a , R 2 , are as defined above;

R 4 , R 5 and R 7 are independently hydrogen, halogen, alkyl, haloalkyl, cyano or nitro;

R 6 is halogen, alkyl, haloalkyl, alkoxy, haloalkyloxy, cyano, nitro, —C(O)R 12 , —S(O) n R 12 or SF 5 ;

Z is a nitrogen atom or C—R 13 ;

R 12 is alkyl or haloalkyl;

R 13 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, alkoxy or haloalkoxy; and

n is 0, 1 or 2; and

L is halogen, trifluoromethane sulfonyl, methanesulfonyl, or toluenesulfonyl; and

(iii) optionally, subjecting the moiety —C(═O)R a in the compound of formula (VI) to functional group modification.