Abstract
A method of preparing carboxylic acid with ozone is provided. The method includes: filling the ozone to the cycloalkanes or benzene derivatives in a predetermined temperature and a predetermined pressure in the presence or absence of light irradiation to generate alkyl dicarboxylic acids or phenyl carboxylic acids. In this invention, the reaction occurs at room temperature and atmospheric pressure. No harmful side products were produced. It is a simple, low-energy consuming and eco-friendly method.