Patent ID: 7572938
Filing Date: 2009-08-11
Classification: C07C,C11D

Abstract:
1. A process for making a ketone of the formula II, an aldehyde or ketone of the formula III comprising up to 20 carbon atoms, and an aldehyde or ketone of the formula IV comprising up to 20 carbon atoms, wherein A is an aromatic or a heteroaromatic ring; or A is an aromatic or heteroaromatic ring substituted with one or more residues selected from the group of alkyl, aryl, aralkyl, alkenyl, alkynyl, —OH, —O-alkyl, -alkoxyalkoxy, —O-aralkyl, —O-aryl, —O-acyl, —NO A is an aromatic or heteroaromatic ring bearing a residue that together with the carbon atoms to which it is attached forms an aromatic or alicyclic ring, or an aromatic or alicyclic ring bearing one or more heteroatoms selected from oxygen, nitrogen or sulphur, which aromatic or alicyclic ring may be substituted with one or more residues selected from the group of alkyl, alkenyl, and alkynyl residues, R R R R n is an integer from 1 to 3, which comprises subjecting to a photoreaction a compound of formula I wherein A, R