Patent ID: 6291596
Filing Date: 2001-09-18
Classification: B01J,C08C,C08F

Abstract:
A process for hydrogenating an olefinically unsaturated compound, which comprises contacting an olefinically unsaturated compound with hydrogen in the presence of a hydrogenation catalyst in an inert, organic solvent, wherein the hydrogenation catalyst comprises the following constituent (A):Constituent (A): at least one member selected from the group consisting of compounds represented by the following general formulas (1) and (2): ##STR13##wherein M.sup.1 represents a titanium atom, a zirconium atom or a hafnium atom; each of X.sup.1 and X.sup.2 represents independently a monovalent hydrocarbon group having 5 to 20 carbon atoms and having a cyclopentadiene skeleton and is bonded to M.sup.1 in its cyclopentadiene skeleton portion; Y.sup.1 represents a halogen atom or a monovalent organic group having 3 to 20 carbon atoms and having a heterocyclic skeleton which group is covalently bonded to M.sup.1 through an oxygen atom or a nitrogen atom thereof; and Y.sup.2 represents a monovalent organic group having 3 to 20 carbon atoms and having a heterocyclic skeleton which group is covalently bonded to M.sup.1 through an oxygen atom or a nitrogen atom thereof, ##STR14##wherein M.sup.2 represents a titanium atom, a zirconium atom or a hafnium atom; each of X.sup.3 and X.sup.4 represents independently a divalent hydrocarbon group having 5 to 20 carbon atoms and having a cyclopentadiene skeleton and is bonded to M.sup.2 in its cyclopentadiene skeleton portion; Z.sup.1 represents a divalent hydrocarbon group having 1 to 3 carbon atoms, a (poly)silylene group having 1 to 3 silicon atoms or a (poly)siloxanylene group having 1 to 3 silicon atoms; Y.sup.3 represents a halogen atom or a monovalent organic group having 3 to 20 carbon atoms and having a heterocyclic skeleton which group is covalently bonded to M.sup.2 through an oxygen atom or a nitrogen atom thereof; and Y.sup.4 represents a monovalent organic group having 3 to 20 carbon atoms and having a heterocyclic skeleton which group is covalently bonded to M.sup.2 through an oxygen atom or a nitrogen atom thereof.