In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 14220-64-5, name is Bis(benzonitrile)palladium chloride, introducing its new discovery. Application In Synthesis of Bis(benzonitrile)palladium chloride
A series of platinum(II) complexes with tridentate ligands was synthesized and their interactions with Gquadruplex DNA within the c-myc gene promoter were evaluated. Complex 1, which has a flat planar 2,6-bis(benzimidazol-2-yl)pyridine (bzimpy) scaffold, was found to stabilize the c-myc G-quadruplex structure in a cellfree system. An in silico G-quadruplex DNA model has been constructed for structure-based virtual screening to develop new PtII-based complexes with superior inhibitory activities. By using complex 1 as the initial structure for hit-to-lead optimization, bzimpy and related 2,6-bis(pyrazol-3-yl) pyridine (dPzPy) scaffolds containing amine side-chains emerge as the top candidates. Six of the top-scoring complexes were synthesized and their interactions with c-myc G-quadruplex DNA have been investigated. The results revealed that all of the complexes have the ability to stabilize the c-myc G-quadruplex. Complex 3a ([PtIIL2R]+; L2 = 2,6bis[1-(3-piperidinepropyl)-1H-enzo[d]imidazol-2-yl]pyridine, R = Cl) displayed the strongest inhibition in a cell-free system (IC50 = 2.2 muM) and was 3.3-fold more potent than that of 1. Complexes 3a and 4a ([PtIIL3R]+; L3 = 2,6-bis[1-(3-morpholinopropyl)1H- pyrazol-3-yl]pyridine, R = Cl) were found to effectively inhibit c-myc gene expression in human hepatocarcinoma cells with IC50 values of 17 muM, whereas initial hit 1 displayed no significant effect on gene expression at concentrations up to 50 muM. Complexes 3a and 4a have a strong preference for Gquadruplex DNA over duplex DNA, as revealed by competition dialysis experiments and absorption titration; 3a and 4 a bind G-quadruplex DNA with binding constants (K) of approximately 106-107dm 3mol-1, which are at least an order of magnitude higher than the K values for duplex DNA. NMR spectroscopic titration experiments and molecular modeling showed that 4 a binds c-myc G-quadruplex DNA through an external end-stacking mode at the 3’terminal face of the G-quadruplex. Intriguingly, binding of c-myc G-quadruplex DNA by 3b is accompanied by an increase of up to 38-fold in photoluminescence intensity at lambdamax = 622 nm.
We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 14220-64-5, and how the biochemistry of the body works.Application In Synthesis of Bis(benzonitrile)palladium chloride
Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method