Herbicidal derivatives of substituted benzoyl-hydrazinium compounds.

摘要

Herbicidal compounds of formula (I)
l. A compound of formula (I)
<CHEM>
or a zwitterion or imide derivative thereof; wherein R<1>, R<2> and R<3> are each independently optionally substituted alkyl or R<1> and R<2> together with the nitrogen atom to which they are attached form a 5- or 6-membered heterocyclic ring;
R<4> is hydrogen, nitro, halo, alkyl or CF3;
R<5> is halo; and
and @ is an anion.
<??>Process for preparing these compounds and compositions containing them are also described.