Herbicidally active unsaturated esters of halogenated .alpha.-[4

Details Herbicidally active unsaturated esters of halogenated .alpha.-[4 Herbicidally active unsaturated esters of halogenated .alpha.-[4

1981-07-02

1983-12-27

Rizzo, Nicholas S.

Chemistry: fertilizers

Processes and products

Forms or conditioning

546300, 546302, A01N 4340, C07D21336

Patent

active

044228678

ABSTRACT:
A class of herbicidal unsaturated esters of .alpha.-[4-(3',5'-dihalogeno-pyridyl-2'-oxy)-phenoxy]-propionic and -thiolpropionic acid of the formula ##STR1## wherein Hal is chlorine or bromine, X is oxygen or sulfur, and R is an unsubstituted or halogenated aliphatic or alicyclic radical which may contain nitrogen, and which posseses at least one double and/or triple bond, with the proviso that if X is oxygen, R is not an unsubstituted alkenyl radical. These new esters are useful for selective post-emergent control of grassy weeds in cultivated plants such as wheat, barley, rice and soybean.

REFERENCES:
patent: 4003734 (1977-01-01), Johnston
patent: 4169720 (1979-10-01), Schacht et al.
patent: 4175947 (1979-11-01), Koch et al.
patent: 4235621 (1980-11-01), Mishyama et al.
patent: 4253866 (1981-03-01), Schurter et al.
patent: 4325729 (1982-04-01), Rempfler et al.

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