申请人:——
公开号:US20030105340A1
公开(公告)日:2003-06-05
The present invention provides a process from preparing isocoumarin-3-yl derivatives comprising reacting a homophthalic anhydride derivative with a carbonyl compound, wherein the carbonyl group is substituted with an acyl activating group, in the presence of a reaction medium comprising a solvent and a base. The invention also encompasses a process for the preparation of homophthalate esters useful in the preparation of homophthalic anhydride reactants as well as an integrated process wherein the twp reactions are carried out sequentially to afford the desired isocoumarin derivative.
本发明提供了一种制备异香豆素-3-基衍生物的方法,包括将一种苯二甲酸酐衍生物与一种带有酰基活化基团的羰基化合物反应,其中在溶剂和碱组成的反应介质中进行反应。该发明还涵盖了一种用于制备异香豆酸酯的方法,该异香豆酸酯在制备异香豆酸酐试剂时非常有用,以及一种集成过程,其中这两个反应依次进行,以得到所需的异香豆素衍生物。