Patent ID: 9193651
Filing Date: 2015-11-24
Classification: B01J,C07C

Abstract:
1. A process for the chemoselective reduction of a terminally unsaturated carboxylic ester (I) to a terminally unsaturated alcohol (II) wherein A is a divalent radical containing 1 to 30 carbon atoms, which may be linear or branched, substituted or unsubstituted aliphatic, aromatic or contain both aliphatic and aromatic elements; R is a hydrocarbon radical or a radical derived from a hydrocarbon, which may be substituted or unsubstituted and saturated or unsaturated; R 1 is a hydrogen atom or a C 1-20 linear or branched, substituted or unsubstituted alkyl or alkene group; and m is an integer from 1 to 6, by catalytic hydrogenation in the presence of a ruthenium (II) complex, wherein the concentration of the ruthenium (II) complex is less than 0.05 mol %.