申请人:FMC Corporation
公开号:US05250504A1
公开(公告)日:1993-10-05
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.
本申请公开了除草.beta.-吡唑基丙烯酸,含有它们的组合物,制备它们的方法,以及通过预出苗或后出苗应用除草组合物来控制不需要的植物生长的方法。这些除草化合物的化学式为##STR1##其中X为氯或氟,X.sup.1为氢,氯或氟,X.sup.2为氯,氟,三氟甲基或乙氧基,X.sup.3为氢,氯或氟;M为--CH--,--CF--或--CCl--;R.sup.1为--CH.dbd.C(--R.sup.2)--C(.dbd.O)--Z--[S(O).sub.2 ].sub.n --R.sup.3其中R.sup.2为氢或甲基;R.sup.3为氢,低级烷基或苯甲基,可选地取代一个或多个氯,溴,氟或甲基;Z为--O--,--S--或--NR.sup.4;n为0或1;前提是当Z为--O--或--S--时,n为0。