Preparation of aromatic and heteroaromatic carboxylic acids...

Details Preparation of aromatic and heteroaromatic carboxylic acids... Preparation of aromatic and heteroaromatic carboxylic acids...

C - Chemistry, Metallurgy

07

B

C07B 41/00 (2006.01) C07B 33/00 (2006.01) C07C 27/12 (2006.01) C07C 29/50 (2006.01) C07C 51/34 (2006.01) C07D 213/55 (2006.01) C07D 213/803 (2006.01)

Patent

CA 2430171

A process for catalytically oxidizing alkylaromatic compounds of the formula (I) Ar-CH2-R where Ar is an optionally substituted, aromatic or heteroaromatic 5-membered or 6-membered ring or a ring system having up to 20 carbon atoms where Ar may optionally be fused to a C1-C6-alkyl group in which up to 2 carbon atoms may be replaced by a heteroatom, and R is hydrogen, phenyl, benzyl or heteroaryl, where the phenyl, benzyl or heteroaryl radicals may also be joined to Ar by a bridge, or R together with Ar forms an optionally substituted ring system which may contain one or more optionally substituted heteroatoms, to the corresponding aromatic or heteroaromatic carboxylic acids in a solvent with ozone in the presence of a transition metal catalyst and optionally in the presence of an acid at a temperature between -70°C and 110°C to the corresponding carboxylic acid.

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