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US 3,937,726 AGranted
Urea derivatives and their use as herbicides
AssigneeHoechst Aktiengesellschaft
InventorsOtto Scherer, Gerhard Horlein, Hubert Schonowsky
Life of this patent
Estimating the term…
Abstract
Compounds, useful as herbicides, of the formula ##SPC1## Wherein R.sub.1 is haloalkyl, halocycloalkyl, haloalkenyl, or halocycloalkenyl; n.sub.1 is 1 or 2; R.sub.4 is halogen, trifluoromethyl, alkyl, or alkoxy; n.sub.2 is 0, 1, 2, or 3; R.sub.2 is hydrogen or alkyl; and R.sub.3 is alkyl or alkoxy. Methods for making these compounds.
Claims2
A compound of the formula ##SPC8##
- wherein R.sub.1 is haloalkyl having 2 to 5 carbon atoms, the halogen being selected from the group consisting of fluorine, chlorine, and bromine;
- n.sub.1 is 1 or 2;
- R.sub.2 is hydrogen or alkyl having 1 to 4 carbon atoms;
- R.sub.3 is alkyl having 1 to 4 carbon atoms;
- R.sub.4 is halogen, trifluoromethyl, or alkyl or alkoxy having 1 to 3 carbon atoms;
- and n.sub.2 is 0, 1, 2, or 3.
3 more elements
A compound having the formula ##SPC9##
Dependencies are inferred from the claim text.