| abstract |
The present invention provides benzoxazinones of formula I wherein R 1 is hydrogen or halogen; R 2 is hydrogen, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 3 -C 6 -cycloalkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -haloalkenyl, C 3 -C 6 -alkynyl, C 3 -C 6 -haloalkynyl, C 1 -C 6 -alkoxy or C 3 - C 6 -cycloalkyl-C 1 -C 6 -alkyl; R 3 is halogen; R 4 is halogen; X is O or S; and Y is a substituted or unsubstituted heterocycle; Benzoxazinones of formula I are useful as herbicides. |