《Tris(2-pyridyl) Bismuthines: Coordination Chemistry, Reactivity, and Anion-Triggered Pyridyl Coupling》 was written by Garcia-Romero, Alvaro; Plajer, Alex J.; Miguel, Daniel; Wright, Dominic S.; Bond, Andrew D.; Alvarez, Celedonio M.; Garcia-Rodriguez, Raul. Application In Synthesis of 2-Bromo-5-methylpyridineThis research focused ontris pyridyl bismuthine complex lithium silver mol structure iron; reductive elimination gold. The article conveys some information:
A series of new tris(2-pyridyl) bismuthine ligands of the type [Bi(2-py’)3] have been prepared, containing a range of substituents at various positions within their pyridyl rings (py’). They can act as intact ligands or, as a result of the low C-Bi bond energy, exhibit noninnocent reactivity in the presence of metal ions. Structural studies of Li+ and Ag+ complexes show that the coordination to metal ions using their pyridyl-N atoms and to anions using the Lewis acidity of their Bi(III) centers can be modified by the presence of substituents within the 2-pyridyl rings, especially at the 6- or 3-positions, which can block the donor-N or Lewis acid Bi sites. Electron withdrawing groups (like CF3 or Br) can also severely reduce their ability to act as ligands to metal ions by reducing the electron donating ability of the pyridyl-N atoms. Noninnocent character is found in the reactions with Cu+ and Cu2+, resulting in the coupling of pyridyl groups to form bipyridines, with the rate of this reaction being dependent on the anion present in the metal salts. This leads to the formation of Bi(III)/Cu(I) complexes containing hypervalent [X2Bi(2-R-py)]- (X = Cl, Br) anions. Alternatively, the tris(2-pyridyl) bismuthine ligands can act as 2-pyridyl transfer reagents, transferring 2-py groups to Au(I) and Fe(II). A series of tris(2-pyridyl) bismuthine ligands have been prepared whose cation and anion coordination properties can be controlled by substitution in the Py ring. They can act as intact ligands and display noninnocent reactivity, such as acting as 2-pyridyl transfer reagents and, as a result of the Lewis acidity of their Bi(III) centers, exhibiting anion dependent reactivity. The experimental process involved the reaction of 2-Bromo-5-methylpyridine(cas: 3510-66-5Application In Synthesis of 2-Bromo-5-methylpyridine)
2-Bromo-5-methylpyridine(cas: 3510-66-5) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Application In Synthesis of 2-Bromo-5-methylpyridine