3-keto-4-(4'-heterocyclic-substituted phenoxy) pentanoates their 3-methylated enol and 2,3- hydrogenated derivatives thereof for the control of weeds.

摘要

The invention provides weed-controlling compounds of the formula
<CHEM>
as well as the 2,3-hydrogenated
<CHEM>
and the 3- alkylated enol
<CHEM>
forms,
wherein R is
<CHEM>
(Y and Y min being halo or trifluoromethyl, X being HN halo, X min being H, halo or trifluoromethyl) and R<3> is -C2H5 or -CH3
<??>It also provides methods of making these compounds and of using them in the control of weeds.