METHOD FOR PREPARING 4-[3,5-BIS(2-HYDROXYPHENYL)-[1,2,4]TRIAZOL-1-YL]-BENZOIC ACID

METHOD FOR PREPARING 4-[3,5-BIS(2-HYDROXYPHENYL)-[1,2,4]TRIAZOL-1-YL]-BENZOIC ACID

A method for preparing 4-[3,5-bis(2-hydroxyphenyl)-[1,2,4]triazol-1-yl]benzoic acid of formula (I) by reaction of 2-(2-hydroxyphenyl)benz[e][1,3]oxazin-4-one of formula (II) with 4-hydrazinobenzoic acid of formula (III) in an organic acid or in a mixture of an organic acid and an organic solvent.

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Bibliographische Detailangaben
Hauptverfasser: HRADIL PAVEL, KVAPIL LUBOMIR, SLEZAR PETR, GREPL MARTIN, MELNICKY RADEK
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A method for preparing 4-[3,5-bis(2-hydroxyphenyl)-[1,2,4]triazol-1-yl]benzoic acid of formula (I) by reaction of 2-(2-hydroxyphenyl)benz[e][1,3]oxazin-4-one of formula (II) with 4-hydrazinobenzoic acid of formula (III) in an organic acid or in a mixture of an organic acid and an organic solvent.