N- (2-PYRIMIDINYL) (THIO)PHOSPHORSÄURETRIAMIDE, VERFAHREN ZU IHRER HERSTELLUNG, UND DEREN VERWENDUNG ALS MITTEL ZUR REGULIERUNG BZW. HEMMUNG DER ENZYMATISCHEN HARNSTOFF-HYDROLYSE

• Main Authors: KRISTOF, WOLFGANG, NICLAS, HANS-JOACHIM, HUCKE, ANDRE, WOZNIAK, HARTMUT, MICHEL, HANS-JUERGEN
• Format: Patent
• Language: German
• Published: 15.02.2004
• Edition: 7
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

N-(2-Pyrimidinyl)-phosphoric (or thiophosphoric) acid triamide compounds (I) are new. N-(2-Pyrimidinyl)-phosphoric (or thiophosphoric) acid triamide compounds of formula (I) are new. [Image] X : O or S; R1H, 1-8C alkyl or 6-10C aryl; R2, R3H, alkyl, aryl, aralkyl, alkoxy, halo, alkylthio, mono- or dialkylamino, CN or NO2 (where alkyl residues have 1-8C, aryl residues have 6-10C and aralkyl residues have 7-18C, and these residues are optionally substituted, specifically by one or more groups such as halo, CN, 1-4C alkylthio, 1-4C alkoxy, di-(1-4C alkyl)-amino or NO2). An independent claim is included for the preparation of (I). - ACTIVITY : None given in the source material. - MECHANISM OF ACTION : Urease inhibitor. When 30 g of soil (watered to 40% of the maximum capacity) was treated with 1 ml of urea solution (corresponding to 50 mg of urea), simultaneous treatment with N-(2-pyrimidinyl)-phosphoric acid triamide (Ia) at 0.1 wt.% (based on urea N) gave a t50 value of 9 days (i.e. the time for urease-induced hydrolysis of 50% of the urea) and a K value of 1.29, compared with 7 days and 1 respectively for the conventional additive PPDA.