申请人:GENERAL ELECTRIC COMPANY
公开号:EP0126950A2
公开(公告)日:1984-12-05
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。