FUNCTIONALIZED IMIDAZOLINE-2-YLIDENE COMPLEXES OF RHODIUM AND PALLADIUM

N-Heterocyclic 'carbene' ligands derived from imidazole are alternativ es for the well-established phosphine ligands in organometallic cataly sis. In contrast to phosphines, the carbene ligands do not undergo rea dy dissociation from palladium and rhodium so that immobilization tech niques appear reasonable. The synthesis of novel, functionalized imida zoline-2-ylidene complexes suitable for reactions with functionalized polymers is reported, as well as the synthesis of a water-soluble meta l complex. Furthermore, model compounds for polyether-substituted imid azoline-2-ylidene complexes are presented. (C) 1997 Elsevier Science S .A.