Nematocidal heterocyclic amides
Disclosed are compounds of Formulae 1, 1a, 1b and 2, wherein R 1 , R 1a , R 1b , R 2 , R 3 and R 4 are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formulae 1, 1a and 1b, and methods for controlling a parasitic nematode comprising contacting the parasitic nematode or its environment with a biologically effective amount of a compound or composition of Formulae 1, 1a, 1b and 2.
1. A method for controlling a soil-dwelling nematode comprising contacting the nematode with a biologically effective amount of a compound selected from Formula 2,
wherein
Q is a furan ring substituted with R 4 at a carbon atom adjacent to the carbon atom through which the furan ring is bonded to the remainder of Formula 2;
R 1a is C 1 -C 6 alkyl or C 3 -C 6 cycloalkyl, each unsubstituted or substituted with at least one R 5 ;
R 1b is H or C 1 -C 3 alkyl; or
R 1a and R 1b are taken together with the carbon atom to which they are attached to form a 3- to 6-membered cycloalkyl ring, unsubstituted or substituted with at least one R 5 ;
R 2 is H; or C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 3 -C 6 cycloalkyl, C 2 -C 6 alkylcarbonyl, C 2 -C 6 alkoxycarbonyl, C 1 -C 6 alkylthio or C 1 -C 6 alkylsulfonyl, each unsubstituted or substituted with at least one R 5 ;
R 3 is C 2 -C 16 alkyl, C 2 -C 16 alkenyl, C 2 -C 16 alkynyl or C 3 -C 6 cycloalkyl, each unsubstituted or substituted with at least one R 6 ;
R 4 is Cl;
each R 5 is independently halogen, cyano, C 1 -C 3 alkoxy, C 3 -C 6 cycloalkyl, C 1 -C 3 alkylthio, C 1 -C 3 alkylsulfinyl, or C 1 -C 3 alkylsulfonyl;
each R 6 is independently halogen, cyano, C 1 -C 3 alkoxy, C 3 -C 6 cycloalkyl, C 1 -C 3 alkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 alkylsulfonyl or SiR a R b R c ; and
each R a , R b and R C is independently C 1 -C 6 alkyl.
2. The method of claim 1 wherein Q is