Method for synthesizing 2,3,5-trimethylbenzoquinone and 2,3,5-trimethylhydroquinone

The invention provides a method for synthesizing 2,3,5-trimethylbenzoquinone and 2,3,5-trimethylhydroquinone. In the method, the 2,3,5-trimethylbenzoquinone and the 2,3,5-trimethylhydroquinone are prepared by oxidizing reaction at the temperature of between 50 and 80 DEG C in the presence of a Cu-SBA-15 mesoporous molecular sieve serving as a catalyst, H2O2 serving as an oxidant and acetonitrile serving as a solvent. In the method, the reaction process is simple, and the equipment requirement is low; the Cu-SBA-15 mesoporous molecular sieve is used as the catalyst, contributes to the dispersion of products and is easy to separate; and the H2O2 is used as the oxidant, and the byproduct is H2O, so that the method is environment-friendly.