Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1985-03-13
1987-06-16
Ford, John M.
Chemistry: fertilizers
Processes and products
Organic material-containing
71902, 548375, 548376, C05C 100, C07D23116
Patent
active
046734295
ABSTRACT:
1-Hydroxypyrazole derivatives of the formula (I) ##STR1## where A is ##STR2## n is 0 or 1, R.sup.1, R.sup.2 and R.sup.3 independently of one another are each hydrogen, chlorine, bromine or iodine, R.sup.4 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 R.sup.4 which are capable of substitution may furthermore be monosubstituted or polysubstituted by halogen, haloalkyl, haloalkoxy, alkyl, alkoxy, alkoxycarbonyl, --OH, .dbd.O, --COOH or salts of this, --NO.sub.2 or --CN, have a nitrification-inhibiting action. Substances where R.sup.4 is not hydrogen when n is 0 are novel.
REFERENCES:
patent: 3137563 (1964-06-01), Newcomer et al.
patent: 3282991 (1966-11-01), Klein et al.
patent: 3494757 (1970-02-01), Osborne
patent: 3635690 (1972-01-01), Griffith
patent: 4511723 (1985-04-01), Rieber et al.
Chemical Abstracts, 158074r, vol. 91, 1979, p. 673.
Boehm Heinrich
Dressel Juergen
Pommer Ernst-Heinrich
Rieber Norbert
BASF - Aktiengesellschaft
Briscoe Kurt G.
Ford John M.
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