Herbicidal N-thienyl-chloroacetamides
AssigneeSandoz Ltd.
InventorsKarl Seckinger, Fred Kuhnen, Karlheinz Milzner
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Abstract
The invention provides 5-membered heteroaromatic compounds of formula I ArN(Y)COCH.sub.2 Cl I wherein Ar is a 5-membered heteroaromatic group comprising 1 or 2 heteroatoms selected from O, S and N and linked by a ring C-atom to the N-atom of the N(Y)COCH.sub.2 Cl group to which it is bound, whereby where Ar is pyrazolyl, said N(Y)COCH.sub.2 Cl group is in the 4-position, and Y is as specified in the description, the use of these compounds as herbicides, compositions for facilitating such use and the preparation of the chloroacetamides.
Claims25
A compound of the formula ##STR43## wherein R and R' are each independently H;
- F;
- Cl;
- Br;
- C.sub.1-4 alkyl;
- C.sub.1-4 alkyl substituted by F, Cl, Br, C.sub.1-4 alkoxy C.sub.3-6 cycloalkyl;
- C.sub.2-4 alkenyl;
- C.sub.2-4 alkenyl substituted by C.sub.1-4 alkoxy;
- C.sub.3-6 cycloalkyl;
- formyl;
- C.sub.2-4 alkanoyl;
- C(.dbd.NOC.sub.1-4 alkyl)-C.sub.1-3 alkyl;
- C(OC.sub.1-4 alkyl).sub.2 -C.sub.1-3 alkyl;
- CH(OC.sub.1-4 alkyl).sub.2 ;
- C.sub.1-4 alkylthio;
- C.sub.1-4 alkylsulfinyl;
- C.sub.1-4 alkylsulfonyl;
- C.sub.1-5 alkoxycarbonyl;
- C.sub.1-4 alkoxy;
- C.sub.1-4 alkoxy substituted by F, Cl, Br or C.sub.1-4 alkoxy;
- C.sub.2-4 alkenyloxy;
- C.sub.2-4 alkynyloxy;
- hydroxy;
- hydroxymethyl;
- or an ester of hydroxy or hydroxymethyl with formic acid, acetic acid or chloroacetic acid,
- R" is H, C.sub.1-4 alkyl, F, Cl, Br or C.sub.1-4 alkoxycarbonyl,
- R.sub.3 is H or a hydrocarbon group selected from the group consisting of C.sub.1-8 alkyl, C.sub.3-8 alkenyl, C.sub.3-8 alkynyl, C.sub.3-8 cycloalkyl, C.sub.5-8 cycloalkenyl and C.sub.3-8 cycloalkyl-C.sub.1-5 alkyl, said R.sub.3 hydrocarbon group being unsubstituted or monosubstituted by F, Cl, Br, cyano or C.sub.1-4 alkoxy, and
- A is branched or unbranched C.sub.1-8 alkylene separating the N and O atoms to which it is attached by 1 to 3 carbon atoms.
Dependencies are inferred from the claim text.