PYRIMIDINE DERIVATIVES AND THEIR USE AS HERBICIDES
申请人:Boussemghoune Mohamed Abdelouahab
公开号:US20120053053A1
公开(公告)日:2012-03-01
The present invention relates to substituted pyrimidine derivatives, as well as N-oxides thereof and agriculturally acceptable salts thereof, and their use to control undesired plant growth, in particular in crops of useful plants. The invention extends to herbicidal compositions comprising such compounds, N-oxides and/or salts as well as mixtures of the same with one or more further active ingredient (such as, for example, an herbicide, fungicide, insecticide and/or plant growth regulator) and/or a safener. The invention further relates to intermediates useful in the preparation of such compounds, and to processes for their preparation.
The invention relates to novel heterocyclic compounds of the formula
in free base form or in acid addition salt form, in which R
1
, R
2
, R
3
, R
4
and A are as defined in the specification, to their preparation, to their use as medicaments and to medicaments comprising them.