Nirtification-inhibiting 1-hydroxypyrazole derivatives

Details Nirtification-inhibiting 1-hydroxypyrazole derivatives Nirtification-inhibiting 1-hydroxypyrazole derivatives

C - Chemistry, Metallurgy

07

D

167/10.2, 260/31

C07D 231/12 (2006.01) A01N 43/56 (2006.01) C07D 231/16 (2006.01) C07D 521/00 (2006.01)

Patent

CA 1244447

- 19 - Abstract of the Disclosure: 1-Hydroxypyrazole deriva- tives of the formula (I) Image (I) R4 where A is Image -SO-, -SO2- or -SO2-N-, n is 0 or 1, R1, R2 and R3 independently of one another are each hydrogen, chlorine, bromine or iodine, R4 is hydrogen, a straight-chain or branched, open-chain alkyl, alkenyl or alkynyl radical, a cyclic alkyl, alkenyl or alkynyl radical or aryl or aralkyl, and the radicals R4 which are capable of substitution may furthermore be mono- substituted or polysubstituted by halogen, haloalkyl, haloalkoxy, alkyl, alkoxy, alkoxycarbonyl, -OH, =0, -COOH or salts of this, -NO2 or -CN, have a nitrification- inhibiting action. Substances where R4 is not hydrogen when n is 0 are novel.

476401

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