A pyrimidinone compound represented by formula (1):
wherein: A
1
represents a nitrogen atom or a CR
4
; A
2
represents a nitrogen atom and A
3
represents a CR
3b
, or A
2
represents a CR
3a
and A
3
represents a nitrogen atom; Q represents an oxygen atom or a sulfur atom; G represents a C2-C10 chain hydrocarbon group having one or more halogen atoms, etc.; R
1
represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms; R
2
represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, etc.; R
4
represents a hydrogen atom, etc.; R
3
, R
3a
, and R
3b
represent independently of each other a hydrogen atom, etc.; n represents 0, 1, or 2; and p represents 0, 1, 2, or 3 has an excellent efficacy for controlling harmful arthropods.
The present invention provides a nitrile compound represented by the formula (I): wherein R represents C1-C4 fluoroalkyl, Q represents halogen, C1-C11 alkyl optionally substituted with halogen, C2-C6 alkenyl group optionally substituted with halogen, C2-C6 alkynyl optionally substituted with halogen, C3-C7 cycloalkyl optionally substituted with halogen or (C3-C7 cycloalkyl optionally substituted with halogen) C1-C4 alkyl, which has excellent control effect against pests.
Compounds of formula (I) wherein the symbols have the meaning given in the specification, as well as processes for preparing the compounds (I), pesticidal compositions and synergistic mixtures comprising compounds (I), methods for the control of insects, acarids or nematodes by contacting the pests or their food supply, habitat or breeding grounds with a pesticidally effective amount of compounds formula (I), and a method for treating, controlling, preventing or protecting animals against infestation or infection by parasites which comprises orally, topically or parenterally administering or applying to the animals a parasiticidally effective amount of compounds of formula (I).
Compounds of formula (I) wherein the symbols have the meaning given in the specification, as well as processes for preparing the compounds (I), pesticidal compositions and synergistic mixtures comprising compounds (I), methods for the control of insects, acarids or nematodes by contacting the pests or their food supply, habitat or breeding grounds with a pesticidally effective amount of compounds formula (I), and a method for treating, controlling, preventing or protecting animals against infestation or infection by parasites which comprises orally, topically or parenterally administering or applying to the animals a parasiticidally effective amount of compounds of formula (I).