903676-75-5Relevant academic research and scientific papers
Redox Series of Cyclometalated Nickel Complexes [Ni((R)Ph(R′)bpy)Br]+/0/-/2- (H-(R)Ph(R′)bpy = Substituted 6-Phenyl-2,2′-bipyridine)
Sandleben, Aaron,Vogt, Nicolas,H?rner, Gerald,Klein, Axel
, p. 3332 - 3341 (2018)
New organonickel complexes [Ni((R)Ph(R′)bpy)Br] carrying various substituted derivatives of the tridentate -C∧N∧N ligand 6-(phenyl-2-ide)-2,2′-bipyridine (-Phbpy) were synthesized from the precursor [Ni(COD)2] (COD = 1,5-cyclooctadiene) and the protoligands (ligand precursors) Br-(R)Ph(R′)bpy. Several synthetic routes for the protoligands were studied and compared. All new compounds have been analyzed and spectroscopically characterized. From several complexes crystal and molecular structures were obtained from XRD experiments. UV-vis absorption spectroscopy and detailed electrochemical measurements reveal the impact of the various substituents on the electronic structure of the complexes. Quantum chemical DFT calculations illustrate the composition of highest occupied molecular orbitals (HOMO) and lowest unoccupied molecular orbitals (LUMO) and support the assignment of the single-electron reduction and oxidation products as bpy-localized ligand radical species and transient nickel(III) intermediates, respectively.
Synthesis, spectroscopic studies, antibacterial activity of chalcones and colorimetric evaluation of the time-killing assay for newly synthesized chalcones using resazurin
Prasad, Sunnapu,Francis, Saleshier M.,Krishnan,Bharathi
, p. 161 - 169 (2018/08/03)
An attempt was made here to synthesize and screen the chalcones against certain Gram positive and Gram negative bacteria by adopting the modified colorimetric technique for Time-Killing Assay. A series of chalcones were synthesized from 1-(2-bromophenyl)
Buchwald-Hartwig coupling/Michael addition reactions: One-pot synthesis of 1,2-disubstituted 4-quinolones from chalcones and primary amines
Fei, Xiang-Dong,Zhou, Zhou,Li, Wen,Zhu, Yong-Ming,Shen, Jing-Kang
experimental part, p. 3001 - 3008 (2012/07/13)
The Buchwald-Hartwig coupling/Michael addition sequence has been successfully applied to the synthesis of functionalized 1,2-disubstituted 4-quinolones using Pd(OAc)2 as a catalyst and PPh3 as a ligand. Under these conditions, the intermediate products first formed from chalcones and primary amines underwent catalytic dehydrogenation to yield the 1,2-disubstituted 4-quinolones. Copyright
