87779-37-1Relevant articles and documents
Substituted pyrimidinyl organophosphorus insecticides
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, (2008/06/13)
An organophosphorus compound having the structural formula STR1 where R is C1 -C4 alkyl; R1 is hydrogen or methyl; or R and R1 together are a diradical having the formula --SC(Y)=Z--, where Y is halogen, hydrogen or C1 -C2 alkyl; and Z is nitrogen, CH, C(CH3) or C(C2 H5) with the proviso that if Y is hydrogen, Z cannot be CH; R2 is hydrogen, chlorine or bromine; R3 is methyl or ethyl; R4 is methoxy, ethoxy, --SCH3 or --SC2 H5 ; and X is oxygen or sulfur and their hydrochlorides is disclosed. These compounds are useful as insecticides or nematocides. In another aspect of this invention a method of controlling rice planthoppers is provided. In this method an insecticidally effective amount of a compound having the formula given above where R is C1 -C4 alkyl or benzyl; R1 is hydrogen or C1 -C3 alkyl; or R and R1 together are a diradical selected from the group consisting of --CH=CH--CH=CH--, --CH=CCl--CH=CH--, --CH=C(CH3)--CH=CH-- and --SC(Y)=Z--, where Y is halogen, hydrogen or C1 -C2 alkyl; and Z is nitrogen, CH, C(CH3) or C(C2 H5); R2 is hydrogen or bromine; R3 is methyl or ethyl; R4 is methoxy, ethoxy or propylthio, with the proviso that if R2 is bromine, R4 is propylthio, and X is oxygen or sulfur is applied to the loci where rice planthoppers reside.
