Patent ID: 7507856

Claim:
A process for the oxidation of substituted or unsubstituted cycloaliphatic hydrocarbons, cycloaliphatic alcohols and cycloaliphatic ketones to acids or polyacids said process comprising: (a) forming a medium comprising (i) at least one cyclic compound to be oxidized selected from the group consisting of cycloaliphatic hydrocarbons, cycloaliphatic alcohols and cycloaliphatic ketones and a mixture thereof, wherein said cycloaliphatic hydrocarbons, cycloaliphatic alcohols and cycloaliphatic ketones having a cycloaliphatic ring of from 3 to 12 carbon atoms, (ii) an oxidizing agent comprising molecular oxygen, (iii) a manganese-based catalyst and (iv) an organic acid compound of the following formula (I): HOOC—Ar R] n (I) in which: Ar represents an aromatic radical having an aromatic ring or several aromatic rings in condensed form, n represents an integer which may be equal to 1, 2 or 3, and R represents a radical of the following formula (II): in which: R1, R2 and R3, which are identical or different, represent an alkyl chain having from 1 to 4 carbon atoms or a fluorine, chlorine or bromine atom; and (b) oxidizing said cyclic compound in a liquid medium at a temperature of between 50° C. and 200° C. and a pressure of between atmospheric and 200 bar to form an acid or polyacids.