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

1979-01-12

1981-11-17

Rizzo, Nicholas S.

Chemistry: fertilizers

Processes and products

Forms or conditioning

546302, C07D21302

Patent

active

043009441

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 possesses 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: 3954442 (1976-05-01), Becker et al.
patent: 4083714 (1978-04-01), Takahashi et al.
patent: 4092151 (1978-05-01), Takahashi et al.

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