Ethers, esters or acid anhydrides are advantageously obtained when a cake of a first reactant selected from salts of organic or oxygen-containing inorganic acids or alkoxides disposed on a filter element is flowed through by a solution of a second reactant selected from inorganic or organic acid halides and alkyl halides, so that the insoluble halide salt formed remains on the filter element. The halide salt can thus be removed substantially quantitatively in a simple manner.
当滤芯上放置的选自有机或含氧
无机酸或烷氧基盐的第一反应物滤饼被选自无机或有机酸卤化物和烷基卤化物的第二反应物溶液流过,从而使形成的不溶性卤化物盐留在滤芯上时,就可以有利地获得醚、酯或酸酐。这样就能以简单的方式大量去除卤化盐。