| abstract |
The present invention provides a herbicidally effective amount of a compound of formula (I) wherein R 1 , R 2 , R 3 , R 4 and R 5 are as described in claim 1, or a salt or N -Relates to a method of regulating a plant or regulating the growth of a plant comprising applying an oxide to the plant or its location. Furthermore, the present invention relates to a process for preparing compounds of formula (I), herbicidal compositions comprising compounds of formula (I), and certain novel pyrido [2,3-b] pyrazines. |