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...
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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. |
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