A process for the production of Dronedarone intermediates of the formula (I), by acylation of 2-(2-hydroxy-5-nitrophenyl)-1-(4-methoxyphenyl)-ethanone, subsequent treatment of the ester with bases and a zeolite (alumosilicate) catalyst and optional subsequent demethylation. This process can be used for the production of Dronedarone.
                            本发明涉及一种制备Dronedarone中间体的方法,该中间体的
化学式为(I),该方法通过对2-(2-羟基-5-
硝基苯基)-1-(4-
甲氧基苯基)-乙酮进行酰化反应,随后用碱和
沸石(铝
硅酸盐)催化剂处理酯,并可选择性地进行脱甲基反应。该方法可用于制备Dronedarone。