Nematode heterocyclic amide

摘要

Compounds of formula 1, formula 1a, formula 1b and formula 2 (inserting formula 1, formula 1A, formula 1B and formula 2) (wherein R1, R1a, R1b, R2, R3 and R4 are As defined in the disclosure). Contacting a composition containing a compound of Formula 1, Formula 1a and Formula 1b, and a parasitic nematode or its environment with a biologically effective amount of a compound or composition of Formula 1, Formula 1a, Formula 1b and Formula 2 A method for controlling parasitic nematodes is also disclosed.