Process for preparing o-hydroxyarylaldehydes

摘要

A process for the manufacture of o-hydroxyarylaldehydes which comprises the steps of (1) oxidizing a 2-arylaminomethylphenol, optionally substituted in the phenolic ring by one or more alkyl groups, to the corresponding optionally substituted 2-hydroxybenzylidenearylamine which (2) is hydrolyzed to the corresponding optionally substituted o-hydroxybenzaldehyde.