A method for preparing tetrabromobenzoate ester from a tetrabromophthalic anhydride including the steps of reacting the tetrabromophthalic anhydride with a catalyst and an alcohol at a temperature that favors partial esterification over complete esterification of the tetrabromophthalic anhydride to form a tetrabromophthalate half-ester reaction mixture; and feeding the half-ester reaction mixture to at least one reactor having and maintaining a temperature that favors decarboxylation over esterification to produce a tetrabromobenzoate ester-containing product. The temperature favoring partial esterification of the tetrabromophthalic anhydride is between about 70°C and 130°C. The temperature favoring decarboxylation over esterification is between about 190°C and 205°C. The tetrabromobenzoate ester-containing product comprises at least about 85% tetrabromobensoate ester. The at least one reactor may include two or more reactors connected to one another in series.
一种从四
溴邻苯二甲酸酐制备四
溴苯甲酸酯的方法,包括以下步骤:将四
溴邻苯二甲酸酐与催化剂和醇在有利于部分酯化而非完全酯化的温度下反应,形成四
溴邻苯酸半酯反应混合物;将半酯反应混合物送入至少一个反应器中,并保持有利于脱羧而非酯化的温度,以生成含有四
溴苯甲酸酯的产物。有利于四
溴邻苯二甲酸酐部分酯化的温度在约70°C至130°C之间。有利于脱羧而非酯化的温度在约190°C至205°C之间。四
溴苯甲酸酯含有产物至少约85%的四
溴苯甲酸酯。至少一个反应器可以包括连接在一起的两个或更多个连续反应器。