Arylpyrrole insecticidal acaricidal and nematicidal agents and methods for the preparation thereof

A method for controlling insects, nematodes or acarina on infested plants comprising applying to the foliage of said plants or to the soil or water in which said plants are growing, an insecticidally, nematicidally or acaricidally, effective amount of a formula I compound having the structure:

• ##STR92## wherein X is H, F, Cl, Br, I, or CF.sub.3 ;
• Y is F, Cl, Br, I, CF.sub.3 or CN;
• W is CN or NO.sub.2 and A is H;
• C.sub.1 -C.sub.4 alkyl optionally substituted with from one to three halogen atoms, one hydroxy, one C.sub.1 -C.sub.4 alkoxy, one C.sub.1 -C.sub.4 alkylthio, one phenyl optionally substituted with C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy or with one to three halogen atoms, one phenoxy optionally substituted with one to three halogen atoms or one benzyloxy optionally substituted with one halogen substituent;
• C.sub.1 -C.sub.4 carbalkoxymethyl;
• C.sub.3 -C.sub.4 alkenyl optionally substituted with from one to three halogen atoms;
• cyano;
• C.sub.3 -C.sub.4 alkynyl optionally substituted with one halogen;
• di-(C.sub.1 --C.sub.4 alkyl) aminocarbonyl;
• or C.sub.4 -C.sub.6 cycloalkylaminocarbonyl;
• L is H, F, Cl or Br;
• and M and R are each independently H, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 alkylsulfinyl, C.sub.1 -C.sub.3 alkylsulfonyl, cyano, F, Cl, Br, I, nitro, CF.sub.3, R.sub.1 CF.sub.2 Z, R.sub.2 CO or NR.sub.3 R.sub.4, and when M and R are on adjacent positions and taken with the carbon atoms to which they are attached they may form a ring in which MR represents the structure:
• ##STR93## Z is S(O)n or O;
• R.sub.1 is H, F, CHF.sub.2, CHFCl, or CF.sub.3 ;
• R.sub.2 is C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, or NR.sub.3 R.sub.4 ;
• R.sub.3 is H or C.sub.1 -C.sub.3 alkyl;
• R.sub.4 is H, C.sub.1 -C.sub.3 alkyl, or R.sub.5 CO;
• R.sub.5 is H or C.sub.1 -C.sub.3 alkyl;
• and n is an integer of 0, 1 or 2.