Disclosed herein are a preparation method and an application of an isoxazinone compound (I), where the preparation method includes: reacting compound (II) with a carboxylic acid (III) in the presence of a dehydrating agent and a base to produce the isoxazinone compound (I); and subjecting the isoxazinone compound (I) and a protonic acid salt of an amino compound (IV) or R3OH (VII) to ring-opening reaction in the presence of a base to produce a bisamide compound (V) or an N-acyl benzoate compound (VI). This method uses readily-available and cheap raw materials, and the production cost is low. The operation is simple, the reaction conditions are mind, the yield is high. This method is free of methanesulfonyl chloride, avoiding the production of organic sulfur-containing wastewater, and the waste produced is low and easily treated, making the method suitable for industrial production.
本文公开了一种异噁嗪酮化合物(I)的制备方法和应用,其中制备方法包括:在脱
水剂和碱存在下,使化合物 (II) 与
羧酸 (III) 反应,生成异噁嗪酮化合物 (I);以及 在碱存在下,使异噁嗪酮化合物 (I) 与
氨基化合物 (IV) 或 R3OH (VII) 的质子酸盐进行开环反应,生成双酰胺化合物 (V) 或 N-酰基
苯甲酸化合物 (VI)。这种方法使用现成的廉价原料,生产成本低。操作简单,反应条件容易掌握,产率高。该方法不含甲
磺酰氯,避免了有机含
硫废
水的产生,产生的废物少且易于处理,适合工业化生产。