| abstract |
The present invention relates to 6,6-dioxo-6-thia-1,4-diaza-naphthalene derivatives of formula (I) where R1, R2, R3a, R3b, R4 and R5 are as defined in claim 1; or a salt or N-oxide thereof. Furthermore, the present invention relates to processes and intermediates for making compounds of formula (I), to herbicidal compositions comprising compounds of formula (I) and to methods of using compounds of formula (I) to control plant growth. |