O-diaminophosphinyl derivatives of oximes as urease inhibitors
AssigneeAllied Corporation
InventorsMichael D. Swerdloff, Milorad M. Rogic, Larry L. Hendrickson
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Abstract
The invention relates to novel urease inhibited fertilizer compositions containing urea and a urease inhibiting amount of one or more o-diaminophosphinyl derivatives of oximes, and methods and composition for inhibiting the activity of urease through use of such compounds.
Claims31
A urease inhibiting composition comprising a carrier and a urease inhibiting effective amount of one or more compounds of the formula:
- ##STR6## wherein:
- X is oxygen or sulfur;
- R.sub.1 and R.sub.2 are the same or different and are hydrogen, substituted or unsubstituted alkyl or aryl groups or R.sub.1 and R.sub.2 together may form a substituted or unsubstituted divalent aliphatic chain completing a cycloaliphatic group, which may optionally include one or more divalent heteroatoms of oxygen, sulfur or nitrogen wherein permissible substituents include one or more alkyl, aryl, halogen, trihalomethyl, nitro, cyano, alkanoyl, alkyl, carboxylate, arylcarboxylate, alkoxy, hydroxy, alkylmercapto, arylmercapto, mercapto, amino, alkylamino, dialkylamino, arylamino, diarylamino, diaminophosphinyl, N-diaminophosphinyl, O-diaminophosphinyl, S-diaminophosphinyl, carbamoyl and carbamoyldiaminophosphinyl;
- and
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different and are hydrogen or alkyl having from about 1 to about 4 carbon atoms.
A fertilizer composition which comprises urea and/or one or more urea precursor compounds capable of forming urea in situ when subjected to the use conditions of the composition, and a urease inhibiting effective amount of one or more compounds of the formula:
- ##STR7## wherein:
- X is oxygen or sulfur;
- R.sub.1 and R.sub.2 are the same or different and are hydrogen, substituted or unsubstituted alkyl or aryl groups or R.sub.1 and R.sub.2 together may form a substituted or unsubstituted divalent aliphatic chain completing a cycloaliphatic group, which may optionally include one or more divalent heteroatoms of oxygen, sulfur or nitrogen wherein permissible substituents include one or more alkyl, aryl, halogen, trihalomethyl, nitro, cyano, alkanoyl, alkyl, carboxylate, arylcarboxylate, alkoxy, hydroxy, alkylmercapto, arylmercapto, mercapto, amino, alkylamino, dialkylamino, arylamino, diarylamino, diaminophosphinyl, N-diaminophosphinyl, O-diaminophosphinyl, S-diaminophosphinyl, carbamoyl and carbamoyldiaminophosphinyl;
- and
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different and are hydrogen or alkyl having from about 1 to about 4 carbon atoms.
A compound of the formula:
- ##STR8## wherein:
- X is oxygen or sulfur;
- R.sub.1 and R.sub.2 are the same or different and are hydrogen, substituted or unsubstituted alkyl or aryl groups or R.sub.1 and R.sub.2 together may form a substituted or unsubstituted divalent aliphatic chain completing a cycloaliphatic group, which may optionally include one or more divalent heteroatoms of oxygen, sulfur or nitrogen wherein permissible substituents include one or more alkyl, aryl, halogen, trihalomethyl, nitro, cyano, alkanoyl, alkyl, carboxylate, arylcarboxylate, alkoxy, hydroxy, alkylmercapto, arylmercapto, mercapto, amino, alkylamino, dialkylamino, arylamino, diarylamino, diaminophosphinyl, N-diaminophosphinyl, O-diaminophosphinyl, S-diaminophosphinyl, carbamoyl and carbamoyldiaminophosphinyl;
- and
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different and are hydrogen or alkyl having from about 1 to about 4 carbon atoms.
Dependencies are inferred from the claim text.