Synthesis and characterization of imidazole–triphenylsilane complexes
作者:Tatiana Eliseeva、Matthew J. Panzner、Willey J. Youngs、Claire A. Tessier
DOI:10.1016/j.jorganchem.2010.03.005
日期:2010.5
Three imidazole-based triphenylsilane complexes were synthesized as preliminary model complexes to those that have been proposed as intermediates during the enzymatic biomineralization of silica by certain sponges. The active site of the enzyme includes histidine-serine moieties that appear to be vital to functionality. The model compounds include ligands that are bound to the silicon via a Si-O-C linkage and have a potentially chelating imidazole ring. Synthesis of these compounds was achieved by reaction of triphenylchlorosilane with two equivalents of ligand, one equivalent acting as a base for the HCl generated during the reaction. The compounds are highly reactive toward hydrolysis and were characterized by NMR, MS, elemental analysis, and X-ray crystallography. (C) 2010 Elsevier B.V. All rights reserved.
Synthesis and crystallographic characterization of multi-donor N-heterocyclic carbene chelating ligands and their silver complexes: Potential use in pharmaceuticals
作者:Jered C. Garrison、Claire A. Tessier、Wiley J. Youngs
DOI:10.1016/j.jorganchem.2005.07.102
日期:2005.12
The potential for N-heterocyclic carbenes (NHCs) to be used as novel chelating ligands for bio-inorganic pharmaceuticals is discussed. In this paper, we design, synthesize and characterize two NHC precursors, 6 and 7, that we believe have potential for use as metal chelators for pharmaceuticals. The NHC precursors are composed of imidazolium and pyridine rings that would form mixed donor NHCs upon