Patent ID: 6197716
Filing Date: 2001-03-06
Classification: C07C,C07D

Abstract:
A composition comprising a mixture of (a) noble metal catalyst selected from the group consisting of rhodium, ruthenium, iridium, platinum and palladium, (b) a phosphorus compound selected fiom the group consisting of inorganic and organic phosphorous compounds with a degree of oxidation state of less than V, and compounds of the formulae O.dbd.P(R.sub.a).sub.3, O.dbd.P(OH)(R.sub.a).sub.2 and O.dbd.P(OH).sub.2 R.sub.a, wherein R.sub.a is linear or branched C.sub.1 -C.sub.12 alkyl or C.sub.6 -C.sub.16 aryl, and (c) a vanadium compound; with the proviso that the vanadium compound is not a vanadium/phosphorus compound.