Novoa, Nestor; Manzur, Carolina; Roisnel, Thierry; Kahlal, Samia; Saillard, Jean-Yves; Carrillo, David; Hamon, Jean-Rene published an article in 2021. The article was titled 《Nickel(II)-Based Building Blocks with Schiff Base Derivatives: Experimental Insights and DFT Calculations》, and you may find the article in Molecules.HPLC of Formula: 15854-87-2 The information in the text is summarized as follows:
We have recently reported a series of neutral square planar tridentate Schiff base (L) complexes of the general formula [(L)M(py)], showing relatively high first-order hyperpolarizabilities and NLO redox switching behavior. In the present study, new members of this family of compounds have been prepared with the objective to investigate their potential as building blocks in the on-demand construction of D-π-A push-pull systems. Namely, ternary nickel(II) building blocks of general formula [(LA/D)Ni(4-pyX)] (4-7), where LA/D stands for an electron accepting or donating dianionic O,N,O-tridentate Schiff base ligand resulting from the monocondensation of 2-aminophenol or its 4-substituted nitro derivative and β-diketones R-C(=O)CH2C(=O)CH3 (R = Me, anisyl, ferrocenyl), and 4-pyX is 4-iodopyridine or 4-ethynylpyridine, were synthesized and isolated in 60-78% yields. Unexpectedly, the Sonogashira cross-coupling reaction between the 4-iodopyridine derivative 6 and 4-ethynylpyridine led to the formation of the bis(4-pyridyl) acetylene bridged centrosym. dimer [{(LD)Ni}2(μ2-py-CΞC-py)] (8). Complexes 4-8 were characterized by elemental anal., FT-IR and NMR spectroscopy, single crystal X-ray diffraction and computational methods. In each compound, the four-coordinate Ni(II) metal ion adopts a square planar geometry with two nitrogen and two oxygen atoms as donors occupying trans positions. In the experiment, the researchers used many compounds, for example, 4-Iodopyridine(cas: 15854-87-2HPLC of Formula: 15854-87-2)
4-Iodopyridine(cas: 15854-87-2) is used as a reagent in the synthesis of indazolylamides as glucocorticoid receptor agonists. 4-Iodopyridine is a halogenated heterocycle that is a building block for proteomics research.HPLC of Formula: 15854-87-2
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com