| 摘要 |
Pyridyloxyphenols of the formula I <IMAGE> in which X and Y denote hydrogen or chlorine are prepared by reacting a 2-halopyridine of the formula II <IMAGE> in which Hal represents fluorine, chlorine or bromine, with hydroquinone in the presence of an acid-binding agent in a water-containing reaction medium, such that from 2 to 5 mol of hydroquinone are employed per mole of 2-halopyridine and the reaction is carried out under an inert gas atmosphere at a temperature of 20-60 DEG C in dimethyl sulphoxide as solvent and in the presence of from 1 to 2 mol of potassium hydroxide per mole of hydroquinone as acid-binding agent.
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