A process for the preparation of mesotrione enolate is provided. The process comprises providing a solution of mesotrione in an organic solvent and contacting the solution with a moderate base in the presence of water at a pH of from 6 to 8, to form an aqueous mesotrione enolate solution. A process for preparing mesotrione from the products of an enol ester rearrangement of 3-oxocyclohex-1-enyl-4-(methylsulfonyl)-2-nitrobenzoate is also provided. The process comprises contacting the products of the rearrangement reaction with an organic solvent to dissolve mesotrione; and contacting the resulting solution with an aqueous solution of an acid.
提供了一种制备美索曲
辛烯醇盐的方法。该方法包括提供一个有机溶剂中的美索曲辛溶液,并在
水的存在下将该溶液与中等碱接触,使其在pH值为6至8的条件下形成
水溶性美索曲
辛醇盐溶液。还提供了一种从3-氧代
环己-1-烯基-4-(甲磺基)-2-硝基
苯甲酸酯的烯醇酯重排产物制备美索曲辛的方法。该方法包括将重排反应产物与有机溶剂接触以溶解美索曲辛;并将所得溶液与酸的
水溶液接触。