Preparation method of carboxylic acid

The invention discloses a preparation method of carboxylic acid. Specifically, the preparation method of the carboxylic acid provided by the invention comprises the following steps: in a solvent, taking a compound shown as a formula I as an oxidizing agent, carrying out oxidation reaction in the presence of strong alkali, and oxidizing a reactant containing a primary alcohol group or an aldehyde group to obtain the corresponding carboxylic acid, the strong base is hydroxide of a first main group element, a second main group element, a third main group element or a transition metal element; 本发明公开了一种羧酸的制备方法。具体地，本发明提供的羧酸的制备方法包括如下步骤：在溶剂中，式I化合物作为氧化剂，在强碱的存在下进行氧化反应，将含有伯醇基团或醛基的反应物氧化得到相应的羧酸；所述的强碱为第一主族元素、第二主族元素、第三主族元素或过渡金属元素的氢氧化物；