Pesticidal arylpyrrolidines

An arylpyrrolidine compound having the formula

• or salts thereof,
• wherein
• A1 represents C—Y2-4 or nitrogen;
• X1, X2-1, X2-2, X2-3 and X2-4 each independently represents hydrogen, halogen, nitro, cyano, hydroxy, mercapto, amino, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylsulfanyl, alkylsulfinyl, alkylsulfonyl, haloalkylsulfanyl, haloalkylsulfinyl, haloalkylsulfonyl, acylamino, alkoxycarbonylamino, haloalkoxycarbonylamino, alkoxyimino, haloalkoxyimino, alkylsulfonylamino, or pentafluorosulfur;
• Y2-1, Y2-3, and Y2-4 each independently represents hydrogen, halogen, nitro, cyano, hydroxy, mercapto, amino, alkyl, haloalkyl, cycloalkyl, cyclohaloalkyl, alkenyl, alkynyl, alkoxy, haloalkoxy, alkylsulfanyl, alkylsulfinyl, alkylsulfonyl, haloalkylsulfanyl, haloalkylsulfinyl, haloalkylsulfonyl, alkylsulfonyloxy, haloalkylsulfonyloxy, alkylaminosulfonyl, haloalkylaminosulfonyl, dialkylaminosulfonyl, di(haloalkyl)aminosulfonyl, alkylamino, dialkylamino, acylamino, alkoxycarbonylamino, haloalkoxycarbonylamino, alkylsulfonylamino, haloalkylsulfonylamino, trialkylsilyl, alkoxyimino, haloalkoxyimino, alkoxyiminoalkyl, haloalkoxyiminoalkyl, alkylsulfinylimino, alkylsulfinyliminoalkyl, alkylsulfinyliminoalkylcarbonyl, alkylsulfoxyimino, alkylsulfoxyiminoalkyl, alkoxycarbonyl, alkylcarbonyl, aminocarbonyl, alkylaminocarbonyl, aminothiocarbonyl, alkylaminothiocarbonyl, dialkylaminocarbonyl, or dialkylaminothiocarbonyl;
• R3 and R4 each independently represents hydrogen, cyano, alkyl, alkenyl, alkynyl, cycloalkyl or alkoxycarbonyl;
• R5-1 represents hydrogen, amino, hydroxy, cyano, alkyl, haloalkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, aminocarbonylalkyl, iminoalkyl, alkylcarbonyl, alkylcarbonylamino, alkylimino, aryl, aralkyl, a heterocycle, a heterocyclic ring substituted alkyl, R7—C(═O)—, or R7—C(═S)—;
• R6-1 represents C3-6cycloalkyl(C1-4)alkylcarbonyl, C1-4-alkoxy(C1-4)alkylcarbonyl, C1-4alkyl-S(C1-4)alkylcarbonyl, C1-4alkyl-SO(C1-4)alkylcarbonyl, C1-4 alkyl-SO2(C1-4)alkylcarbonyl,
• R7 represents phenyl or a saturated or unsaturated heterocyclic ring.