DEMONSTRATION OF A NOVEL METHOD FOR THE CONTROLLED DEPOSITION OF METALS ONTO SURFACES BY PREPARATION OF A PD-HG SIO2 CATALYST FOR THE SELECTIVE HYDROGENATION OF ALKYNES TO ALKENES/

Treatment of silica gel that has SiH functional groups bonded to the s urface, with methanolic PdCl2 and then aqueous Hg2SO4 affords a new ca talytic material for the chemo- and stereo-selective partial hydrogena tion of alkynes to Z-alkenes with a high degree of functional group co mpatibility.