Herbicidal .beta.-pyrazolylacrylic acids

Details Herbicidal .beta.-pyrazolylacrylic acids Herbicidal .beta.-pyrazolylacrylic acids

1993-01-29

1993-10-05

Ramsuer, Robert W.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

5483751, A01N 4356, C07D23114

Patent

active

052505049

ABSTRACT:
This application discloses herbicidal .beta.-pyrazolylacrylic acids, compositions containing them, methods of preparing them, and methods for controlling undesired plant growth by preemergent or postemergent application of the herbicidal compositions to the locus where control is desired. The herbicidal compounds have the formula ##STR1## in which X is chlorine or fluorine, X.sup.1 is hydrogen, chlorine, or fluorine, X.sup.2 is chlorine, fluorine, trifluoromethyl, or ethoxy, and X.sup.3 is hydrogen, chlorine, or fluorine; M is --CH--, --CF--, or --CCl--; and R.sup.1 is --CH.dbd.C(--R.sup.2)--C(.dbd.O)--Z--[S(O).sub.2 ].sub.n --R.sup.3 in which R.sup.2 is hydrogen or methyl; R.sup.3 is hydrogen, lower alkyl, or phenylmethyl optionally substituted with one or more of chlorine, bromine, fluorine, or methyl; Z is --O--, --S-- or --NR.sup.4 ; and n is 0 or 1; provided that when Z is --O-- or --S--, n is 0.

REFERENCES:
patent: 4563210 (1986-01-01), Beck et al.

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