Related Products of 695-34-1, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 695-34-1, Name is 4-Methylpyridin-2-amine, SMILES is C1=C(C=CN=C1N)C, belongs to pyridine-derivatives compound. In a article, author is Yang, Fan, introduce new discover of the category.
An Electron-Poor Dioxa-[2.1.1]-(2,6)-pyridinophane Ligand and Its Application in Cu-Catalyzed Olefin Aziridination
A novel macrocyclic 1,7-dioxa-[2.1.11-(2,6)-pyridinophane ligand has been synthesized and crystallographically characterized. Two derived metal complexes, dichloropalladium(II) and chlorocopper(I), were prepared. In the palladium(II) complex LPdCl2, both in the solid state, according to its crystallographic characterization, and in CH2Cl2 solutions at -40 degrees C, according to H-1 NMR spectroscopy, the ligand adapts a C-1-symmetric kappa(2)-N,N-coordination mode in which the metal atom binds to two nonequivalent pyridine fragments of the macrocycle. The complex is fluxional at 20 degrees C. In the crystalline copper(I) complex LCuCl, the macrocyclic ligand is also kappa(2)-N,N-coordinated to the metal, but it utilizes two equivalent pyridine fragments for the binding. The copper(I) complex is fluxional in CH2Cl2 solutions in the temperature range between 20 and -70 degrees C and is proposed to be involved in a fast intermolecular macrocyclic ligand exchange which is slowed down below -40 degrees C. DFT calculations predict a lower thermodynamic stability of the dioxapyridinophane-derived complexes LPdCl2 and LCuCl, as compared to their [2.1.1]-(2,6)-pyridinophane analogs containing bridging CH2 groups instead of the oxygen atoms. The electron poor dioxapyridinophane chlorocopper(I) complex, in combination with NaBAr4F (BAr4F = tetrakis[3,5-bis(trifluoromethyl)-phenyllborate) in dichloromethane solutions, can serve as an efficient catalyst for aziridination of various olefins with PhINTs at 0-22 degrees C.
Related Products of 695-34-1, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 695-34-1.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem