... [4] G. Wu, M. Huang, M. Richards, M. Poirier, X. Wen, RW Draper, Synthesis 2003, 1657 ... [6] M. Studer, S. Neto, H.-U. Blaser, Topics in Catalysis 2000, 13 ... have developed a Pd/C- ethylenediamine complex [Pd/C(en)] as a chemoselective hydrogenation catalyst by ...