Verfahren zur Herstellung einer aromatischen Carbonsaeure durch Oxydation einer aromatischen Verbindung mit wenigstens einer Alkylgruppe in der Seitenkette

摘要

Aromatic carboxylic acids are prepared by oxidizing alkylaromatic compounds with O2 in a C1- 5 aliphatic carboxylic acid as solvent using as catalyst paraldehyde and a Co salt of the acid used as solvent or of a weaker acid. Examples describe the production of terephthalic acid (I) and p-toluic acid (II) from p-xylene, I from II, isophthalic acid from m-toluic acid and benzoic acid from toluene.ALSO:A catalyst for oxidizing alkylaromatic compounds (see Division C2) comprises paraldehyde and a Co compound, especially a salt of a C1-5 aliphatic carboxylic acid or a weaker acid e.g. carbonic.