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seen framstella o - metallyloxifenol by selective monoforetring of pyrocatechol
seen framstella o - metallyloxifenol by selective monoforetring of pyrocatechol
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机译:邻苯二酚的选择性单前景观察到金银花的邻-金属邻苯二酚
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摘要
The process relates to the preparation of o-methallyloxyphenol by the action of methallyl chloride on pyrocatechol in the presence of a basic agent. It consists in carrying out the reaction in a two-phase liquid reaction medium comprising water and a water-immiscible organic solvent, at a temperature between 50 DEG and 140 DEG C., in the presence of a catalyst chosen from amongst quaternary ammonium derivatives and phosphonium derivatives, using, as the basic agent, an alkali metal or alkaline earth metal hydroxide or an alkali metal carbonate or bicarbonate. It makes it possible to obtain the monoether selectively by minimizing the formation of diether and of alkylation products of the benzene nucleus of the pyrocatechol.
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