Substituted N-aroyl N'-phenyl urea compounds
AssigneeThe Dow Chemical Company
InventorsRaymond H. Rigterink, Ronald J. Sbragia
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Abstract
Novel N-aroyl N'-phenyl ureas having halogen substituents in the 3- and 5-positions and haloalkyl, haloalkoxy or haloalkylthio in the 4-position of the N'-phenyl are more active and have a broader spectrum of effectiveness than the known benzoylurea insecticides.
Claims24
A compound having the formula ##STR24## wherein Ar is a substituted phenyl radical wherein the substituents are chloro, bromo, fluoro, C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy, with the proviso that at least one substituent is positioned ortho to the carbonyl group;
- R.sub.3 and R.sub.4 are individually H or C.sub.1 -C.sub.4 alkyl or together they form the group ##STR25## X.sub.1 and X.sub.2 are halogen and R is a fluorine containing C.sub.1 -C.sub.4 haloalkoxy group.
A composition comprising an insecticidally effective amount of at least one compound having the formula ##STR27## wherein Ar is a substituted phenyl radical wherein the substituents are chloro, bromo, fluoro, C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy, with the proviso that at least one substituent is positioned ortho to the carbonyl group;
- R.sub.3 and R.sub.4 are individually H or C.sub.1 -C.sub.4 alkyl or together they form the group ##STR28## X.sub.1 and X.sub.2 are halogen and R is a fluorine containing C.sub.1 -C.sub.4 haloalkoxy group.
A method for killing and/or controlling insects which comprises applying to the insects, the insect larvae or their habitats an insecticidally effective amount of a compound having the formula ##STR30## wherein Ar is a substituted phenyl radical wherein the substituents are chloro, bromo, fluoro, C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy, with the proviso that at least one substituent is positioned ortho to the carbonyl group;
- R.sub.3 and R.sub.4 are individually H or C.sub.1 -C.sub.4 alkyl or together they form the group ##STR31## X.sub.1 and X.sub.2 are halogen and R is a fluorine containing C.sub.1 -C.sub.4 haloalkoxy group.
Dependencies are inferred from the claim text.