Selective Alkene Hydrogenation with Atomic Hydrogen Permeating through a Pd Sheet Electrode

摘要

Hydrogenation of an alkene is quite important for organic syntheses employing a catalyst (Pd,Ni,Pt) which chemisorbes active hydrogen,however,hydrogenolysis of allylic C-O bonds and benzyloxy groups (Bn-O-) also takes place under the same conditions.Therefore,it is difficult for alkenes having an allyloxy and/or benzyloxy group to be hydrogenated by active hydrogen without the hydrogenolysis.Anew hydrogenation system (Fig.1.) utilizing electrochemically produced active hydrogen has been successful in the saturation of several unsaturated organic compounds such as styrene and its derivates.