PROCESS FOR THE PREPARATION OF V-TRIAZOLYL-(2) PHENOLS

1. Process for the preparation of 3-(v-triazol-2'-yl) phenols of the formula I see diagramm : EP0040357,P5,F1 characterised in that a) 3-(v-triazol-2'-yl)-benzenesulphonic acids of the formula II see diagramm : EP0040357,P5,F2 or alkali metal salts thereof wherein R1 and R2 independently o...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SCHROEDER, JOSEF, DORLARS, ALFONS
Format: Patent
Sprache:eng ; ger
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:1. Process for the preparation of 3-(v-triazol-2'-yl) phenols of the formula I see diagramm : EP0040357,P5,F1 characterised in that a) 3-(v-triazol-2'-yl)-benzenesulphonic acids of the formula II see diagramm : EP0040357,P5,F2 or alkali metal salts thereof wherein R1 and R2 independently of one another denote alkyl, aralkyl or phenyl which is optionally substituted by C1 -C4 -alkyl, C1 -C4 -alkoxy or phenyl and R3 denotes hydrogen or alkyl, or b) oximinohydrazones of the formula III see diagramm : EP0040357,P5,F3 or alkali metal salts thereof are subjected to fusion with an alkali metal hydroxide at 200-300 degrees C - optionally in the presence of catalytic amounts of copper or copper compounds and optionally in the presence of sodium acetate or potassium acetate, alkaline earth metal hydroxides or sodium aluminate.