Process for the preparation of optionally substituted benzaldehyde dialkyl acetals

摘要

An electrochemical oxidation process of optionally substituted toluene dissolved in an alcohol in the presence of a conducting salt is described wherein the electrochemical oxidation is carried out at a current density of 0.1 to 50 A/dm2 using oxidation-resistant anodes. According to the disclosure, the reaction product can be distillatively worked up to obtain secondary products which can be recycled to electrochemical oxidation optionally after treatment of at least some of the secondary products with hydrogen in the presence of a catalyst.