7275-43-6Relevant articles and documents
Syntheses, crystal structure, and magnetic properties of a self-assembling dicopper(II) helicate with novel bipyridine ligand
Kao, Hsien-Chang,Wang, Yi-Chun,Wang, Wen-Jwu
, p. 934 - 939 (2012)
Anovel double helical dicopper(II) complex was synthesized by reaction of a polydentate ligand L = 2,2'- bipyridyl-6,6'-bis(2-acetylpyrazinohydrazone) with copper(II) perchlorate in CH3CN. The self-assembling process was studied by UV-Vis spectrometric titration experiments which revealed the formation of dinuclear complexes [Cu2L2](ClO 4)4. The structure of dicopper double-helicate was confirmed by X-ray diffractometry. Each copper(II) center occupies a distorted octahedral environment. Variable-temperature magnetic measurements reveal weak antiferromagnetic interactions between Cu(II) ion centers with J = -0.63 cm -1.
Models of molecular photocatalysts for water oxidation: Strategies for conjugating the Ru(bda) fragment (bda = 2,2′-bipyridine-6,6′-dicarboxylate) to porphyrin photosensitizers
Adamo, F.,Alessio, E.,Iengo, E.,Vidal, A.
supporting information, (2020/12/09)
Model dyads, in which the Ru(bda) water oxidation catalyst (WOC) is connected to a porphyrin, were prepared following two different modular strategies: i) the direct linkage approach, in which porphyrins bearing peripheral pyridyl rings are bound to the {
The M?CPbA?NH3(G) system: A safe and scalable alternative for the manufacture of (substituted) pyridine and quinoline N?oxides?
Palav, Amey,Misal, Balu,Ernolla, Anilkumar,Parab, Vinod,Waske, Prashant,Khandekar, Dileep,Chaudhary, Vinay,Chaturbhuj, Ganesh
supporting information, p. 244 - 251 (2019/03/17)
An improved, safe, and scalable isolation process for (substituted) pyridine and quinoline N-oxides in quantitative yields along with high purities using the m-CPBA?NH3(g) system is described. The safety was assessed by reaction calorimetry and differential scanning calorimetry studies for possible hazards during the conversion and isolation steps. Careful interpretation of the data substantiated the safety and scalability. The process flow is simplified to meet the industrial requirements of safety, cost-effectiveness, and utility minimization. The reaction was safely demonstrated at a 2.5 kg scale.
The synthesis of diethyl 2-(2,2 ′ -bipyridin-4-ylmethylene)malonate and diethyl 3,3 ′ -(2,2 ′ -bipyridine-4,4 ′ -diyl)diacrylate
Heintz, Katharina,G?rls, Helmar,Imhof, Wolfgang
, (2018/06/15)
Abstract: The new acrylic acid derivatives diethyl 2-(2,2′-bipyridin-4-ylmethylene)malonate and diethyl 3,3′-(2,2′-bipyridine-4,4′-diyl)diacrylate which may be used for the introduction of metal coordination sites in polyacrylates were synthesized and characterized. Intermediates of the syntheses were prepared by improved synthetic protocols working under microwave conditions whenever it was advantageous for the resulting product in terms of reaction time and/or chemical yield. In addition, the crystal structure of one of the intermediates, 4,4′-dibromo-2,2′-bipyridine (6), is reported, in which molecules are arranged into infinite chains by C-H—Br interactions. Graphical Abstract: SYNOPSIS Synthesis and characterization of new 2,2’-bipyridine ligands with substituents related to acrylic acid esters are reported. These compounds offer the possibility to incorporate 2,2’-bipyridine ligands or coordination compounds derived from them into polyacrylate materials. [Figure not available: see fulltext.].