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专利名称：O-alkylation of phenolic compounds via rare
earth orthophosphate catalysts
发明人：Laurent Gilbert,Marcelle Janin,Anne-Marie
Le Govic,Philippe-Jean Tirel
申请号：US08/732831申请日：19961015公开号：US05786520A公开日：19980728
摘要：Carbocyclic/aliphatic ethers, for example anisole, quaicol, guaethol, p-methoxyphenol and ethylene dioxybenzene, are selectively prepared, in good yield, byreacting a phenolic compound, for example a phenol, hydroquinone, pyrocatechin,naphthol, or the like, with an alcohol, for example methanol, ethanol, isopropanol,ethylene glycol, etc. , in gaseous phase, in the presence of a catalytically effective amountof a trivalent rare earth metal orthophosphate, for example a lanthanum, cerium orsamarium orthophosphate, optionally doped with an alkali or alkaline earth metal,preferably cesium.
申请人：RHONE-POULENC CHIMIE
代理机构：Burns, Doane, Swecker & Mathis, LP.
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