Process for the preparation of 2-nitrobenzaldehydes

摘要

The new process for the preparation of 2-nitrobenzaldehydes of the general formula (I) in which X1 and X2 either independently of one another represent hydrogen or halogen or one of the substituents represents nitro and the other substituent then represents hydrogen, by oxidation of 2-nitrotoluenes of the general formula (II) in which X1 and X2 have the meaning indicated above is characterized in that the oxidation with oxygen or an oxygen-containing gas is carried out in the presence of at least one alkoxyalkylamine as a solvent and in the presence of strong bases.