Development of tethered dual catalysts: synergy between photo- and transition metal catalysts for enhanced catalysis

Dissymmetric dinuclear transition metal complexes as dual site catalysts for the polymerization of ethylene

A series of dissymmetric dinuclear complexes were synthesized, as dual site catalysts in ethylene polymerization, by coupling the allylated a-diimine complexes of the metals Ti, Zr, V, Ni and Pd with the ansa-zirconocene complex [C5H4-SiH(Me)-C5H4]ZrCl2 possessing a hydride silane moiety. The different stages of syntheses included the formation of bis(cyclopentadienide)methyl silane which was u...

dissymmetric dinuclear transition metal complexes as dual site catalysts for the polymerization of ethylene

a series of dissymmetric dinuclear complexes were synthesized, as dual site catalysts in ethylene polymerization,by coupling the allylated a-diimine complexes of the metals ti, zr, v, ni and pd with the ansa-zirconocenecomplex [c5h4-sih(me)-c5h4]zrcl2 possessing a hydride silane moiety. the different stages of syntheses includedthe formation of bis(cyclopentadienide)methyl silane which was util...

Development of catalysts and ligands for enantioselective gold catalysis.

During the past decade, the use of Au(I) complexes for the catalytic activation of C-C π-bonds has been investigated intensely. Over this time period, the development of homogeneous gold catalysis has been extraordinarily rapid and has yielded a host of mild and selective methods for the formation of carbon-carbon and carbon-heteroatom bonds. The facile formation of new bonds facilitated by gol...

Heterogeneous Catalysis and Solid Catalysts

New catalysts for the transition-metal-catalyzed synthesis of aziridines.

Aziridines are especially in demand because of their natural occurrence in diverse biologically active compounds and their manifold transformations in chemical reactions. The ring constraint renders them very reactive substances. In the presence of nucleophiles (N, O, S, C nucleophiles, and halides) they undergo ring-opening, they are used for [3+2] cycloadditions and [3+3] annulations, and the...