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US 4,997,940 AGranted
Pyrazolo[1,5-a]pyrimidine-2-sulfonyl chloride and -2-sulfide compounds
AssigneeThe Dow Chemical Company
InventorsAnna P. Vinogradoff, William A. Kleschick
Life of this patent
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Abstract
Novel compounds, e.g. 3-cyano-5,7-dimethyl-N-(2,6-dichlorophenyl)pyrazolo[1,5-a]pyrimidine-2-sul fonamide and their use as herbicides and/or for the suppression of nitrification of ammonium nitrogen in soil.
Claims4
A compound having the formula:
- ##STR33## wherein B represents hydrogen, halogen or C.sub.1 -C.sub.4 alkyl;
- A, C and D independently represent hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, cyano, hydroxy, CO.sub.2 alkyl of 1-3 carbon atoms or A and B or B and C may be bonded together in a cyclic structure --(CH.sub.2).sub.n -- where n is 3, 4 or 5.
Dependencies are inferred from the claim text.