METHOD FOR PREPARATION OF A RUTHENIUM INDENYLIDENE COMPLEX

摘要

The present invention is directed to a method for the preparation of ruthenium catalyst (PCy 3 ) 2 Cl 2 Ru(phenylindenylidene) (Umicore catalyst "M1"). The method comprises a one-step reaction reacting the precursor compound (PPh 3 ) 2 Cl 2 Ru(3-phenylindenylidene) with PCy 3 in a cyclic ether solvent (preferably THF) in concentrations in the range of 0.2 to 0.6 mol catalyst/I while simultaneously precipitating the product from the reaction mixture. A cyclic ether solvate product with high crystallinity and high purity is obtained.