Acid amide derivatives, process for producing these, and pest control agent containing these

A process for producing

• an acid amide derivative of the formula (I) or a salt thereof:
• wherein
• A is phenyl which may be substituted by X,
• B is a heterocyclic group which may be substituted by Y, or a fused heterocyclic group which may be substituted by Y,
• X is halogen, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl, alkoxy, haloalkoxy, alkoxyalkoxy, haloalkoxyalkoxy, alkoxyhaloalkoxy, haloalkoxyhaloalkoxy, alkenyloxy, haloalkenyloxy, alkynyloxy, haloalkynyloxy, alkylthio, haloalkylthio, alkenylthio, haloalkenylthio, alkynylthio, haloalkynylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, dialkylaminosulfonyl, nitro, cyano, phenyl which may be substituted by Y, phenoxy which may be substituted by Y, benzyloxy which may be substituted by Y, pyridyloxy which may be substituted by Y, —OR4, —SR5, —NR6R7, —CO2R8, —C(═O)NR9R10 or an unsaturated heterocyclic group (the unsaturated heterocyclic ring may be substituted by halogen, alkyl, haloalkyl, alkoxy or haloalkoxy),
• Y is halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, dialkylaminosulfonyl, nitro, cyano, —OR4, —CO2R11, —CONR12R13 or an unsaturated heterocyclic group (the unsaturated heterocyclic ring may be substituted by halogen, alkyl, haloalkyl, alkoxy or haloalkoxy),
• each of R1 and R2 is alkyl, cyano or —CO2R14,or
• R1 and R2 may together form a 3- to 6-membered saturated carbocyclic ring,
• R3 is hydrogen, alkyl, alkoxyalkyl, alkylthioalkyl, —COR15, —S(O)mR16 or —S(O)nNR17R18,
• each of R4 and R6 is hydrogen, —C(═W)R19, —C(═W)OR20, —C(═W)SR21, —C(═W)NR22R23, —S(O)qR24 or —S(O)rNR25R26,
• R5 is hydrogen, —C(═W)R19, —C(═W)OR20, —C(═W)SR21 or —C(═W)NR22R23,
• R7 is hydrogen, alkyl or haloalkyl,
• each of R8, R9, R10, R11, R12, R13 and R14 is hydrogen or alkyl,
• R15 is hydrogen, alkyl or alkoxy,
• each of R16, R17, R18, R19, R20, R21, R22, R23, R24, R25 and R26 is alkyl, haloalkyl or phenyl, wherein the phenyl which may be substituted by halogen, alkyl, haloalkyl, alkoxy or haloalkoxy,
• each of m, n, q and r is from 0 to 2, and
• W is oxygen or sulfur,
• provided that following is excluded:
• A is phenyl which may be substituted by X1
• B is pyridyl which may be substituted by Y1 or pyrazolyl which may be substituted by Y1,
• each of R1 and R2 is alkyl, or R1 and R2 together form a 3- to 6-membered saturated carbocyclic ring,
• R3 is hydrogen, alkyl, alkoxyalkyl, alkylthioalkyl, alkylcarbonyl or alkoxycarbonyl,
• X1 is halogen, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl, alkoxy, haloalkoxy, alkenyloxy, haloalkenyloxy, alkynyloxy, haloalkynyloxy, alkylthio, haloalkylthio, alkenylthio, haloalkenylthio, alkynylthio, haloalkynylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, dialkylaminosulfonyl, nitro, cyano, phenyl which may be substituted by Y1, phenoxy which may be substituted by Y1, benzyloxy which may be substituted by Y1 or pyridyloxy which may be substituted by Y1,
• and Y1 is halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, dialkylaminosulfonyl, nitro or cyano.