Substd. l-guanyl-pyrazole base or acid adduct prodn. in high yield - from pyrazole or acid adduct, acid and aq. cyanamide soln. using environmentally friendly solvent, useful as nitrification inhibitor

Prodn. of substd. 1-guanylpyrazole acid adducts of formula (IA) or the free bases (IB); comprises allowing the acid adduct (IIA) of pyrazole or pyrazole (IIB) itself to react with at least equimolar amts. of an acid X and with an aq. cyanamide (III) soln.; R1,R2 = H or 1-3C alkyl. USE/ADVANTAGE - (I...

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Main Authors MICHEL, HANS-JUERGEN., O-7010 LEIPZIG, DE, THIEME, HERMANN., O-4600 WITTENBERG, DE, LANG, SIEGHARD., O-7101 CUNNERSDORF, DE, GRABARSE, MARGIT., O-7241 SEELINGSTAEDT, DE, LEMNITZER, BERND, O-7101 CUNNERSDORF, DE
Format Patent
LanguageEnglish
German
Published 11.05.1994
Edition5
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:Prodn. of substd. 1-guanylpyrazole acid adducts of formula (IA) or the free bases (IB); comprises allowing the acid adduct (IIA) of pyrazole or pyrazole (IIB) itself to react with at least equimolar amts. of an acid X and with an aq. cyanamide (III) soln.; R1,R2 = H or 1-3C alkyl. USE/ADVANTAGE - (I) are used as nitrification inhibitors. (I) are obtd. in high yields, using environmentally friendly and cheap solvent. (III) need not be isolated from the (technical) soln. before use.
Bibliography:Application Number: DE19924237687