Patent ID: 6455460
Filing Date: 2002-09-24
Classification: B01J,C07C

Abstract:
A ruthenium (II) catalyst comprising the reaction product of a ruthenium(II) complex, a chelating diphosphine, and an acid of formula H-Anion, wherein the Anion is a non-coordinating anion selected from the group consisting of BF4âˆ’, B[3,5-(CF3)2C6H4]4âˆ’, PF6âˆ’, SbF6âˆ’ and AsF6âˆ’;the ruthenium complex and chelating diphosphine are present in equimolar amounts; the acid is used in an amount of about 1 molar equivalent per mole of the ruthenium complex; and the reaction occurs in the presence of hydrogen and under an oxygen-free atmosphere in a non-coordinating or weakly coordinating medium.