A method is provided for making aromatic ethers by effecting the displacement of reactive radicals on an activated aromatic nucleus such as a phthalimide with a mono or bisalkali metal phenoxide in the presence of an organic solvent and a dialkylamino branched alkyl substituted pyridinium salt as a phase transfer catalyst. Improved yields of bis(aromatic ethers) are achieved without the production of undesirable by-products, such as akylated phenols.
本发明提供了一种在有机溶剂和作为相转移催化剂的二烷基
氨基支链烷基取代的
吡啶鎓盐的存在下,用单碱
金属或双碱
金属氧化苯取代活化的芳香核(如邻苯二甲
酰亚胺)上的活性自由基,从而制造芳香醚的方法。在提高双(芳香族)醚产量的同时,不会产生烷基化
苯酚等不良副产物。