The present invention relates to compounds of Formula (I), or an agronomically acceptable salt of said compounds wherein A
1
, A
2
, A
3
, X
1
, X
2
, R
1
, R
2
and R
4
are as defined herein. The invention further relates to herbicidal compositions which comprise a compound of Formula (I), to their use for controlling weeds, in particular in crops of useful plants, and to intermediates used to synthesise said compounds.