We have developed a water-based synthesis for the preparation of 4-substituted 1,2,4-triazole ligands with highly polar functional groups. This general synthetic approach has allowed us to prepare two sulfonate functionalized 4-substituted 1,2,4-triazole anions ( L1(-)= 4-(1,2,4-triazol-4-yl)benzenesulfonate; L2(-)= 4-(1,2,4-triazol-4-yl)ethanesulfonate). Reaction of these ligands with cadmium(...

The significant progress made in the context of iron-catalyzed cross-coupling reactions past several years has boosted competition with well-known nickel and palladium catalyst systems. Iron-catalyzed protocols not only benefit from economic toxicology standpoints, but also exhibit a range reactivities tolerate many functional groups. To date iron systems have been developed, ranging use simple...

Objective: The present study was carried out to study the binding interactions of different N’-(substituted phenyl sulfonyl)-pyridine-2carbohydrazide derivatives and N’-(substituted phenyl sulfonyl)-thiophene-2-carbohydrazide derivatives which were synthesized by senior students from research laboratory, with objective to explore the suitability of selected ligands for their binding affinity fo...

2-Aminobenzoxazoles have been synthesized as ligands for the hepatitis C virus (HCV) internal ribosome entry site (IRES) RNA. The compounds were designed to explore the less basic benzoxazole system as a replacement for the core scaffold in previously discovered benzimidazole viral translation inhibitors. Structure-activity relationships in the target binding of substituted benzoxazole ligands ...

A library of triazole-based telomeric quadruplex-selective ligands has been developed that mimic an established family of tri-substituted acridine-based ligands, using crystal structure data as a starting-point for computer-based design. Binding affinities, estimated by electrospray mass spectrometry, are in accord with the design concept.

The reactions of dppf-nickel(0) with alkyl halides proceed via three-coordinate nickel(0) intermediates the form [Ni(dppf)(L)]. effects identity added ligand (L) on catalyst speciation and rates [Ni(COD)(dppf)] have been investigated using kinetic experiments density functional theory calculations. A series monodentate ligands in attempts to identify trends reactivity. Sterically bulky electron...