850495-91-9Relevant academic research and scientific papers
Synthesis and evaluation of 2,5-linked alternating pyridine-thiophene oligomers
Rocha, Silvia V.,Finney, Nathaniel S.
, p. 2598 - 2601 (2010)
The first iterative access to alternating 2,5-linked pyridine-thiophene (Py-Th) oligomers is presented. These oligomers exhibit strong absorption and emission, even in the solid state (picture of the longest oligomer, above). Protonation leads to large red shifts in emission and, unlike most known thiophene-containing oligomers, they are readily reduced but not oxidized. These species represent a promising new class of materials for further study and potential application.
An improved Ullmann-Ukita-Buchwald-Li conditions for CuI-catalyzed coupling reaction of 2-pyridones with aryl halides
Wang, Po-Shih,Liang, Chih-Kai,Leung, Man-Kit
, p. 2931 - 2939 (2007/10/03)
An effective CuI-trans-N,N′-dimethylcyclohexane-1,2-diamine (DMCDA)-K2CO3-catalyzed coupling reaction of 2-pyridones with aryl halides is described. Under our conditions, DMCDA was found to be an effective catalyst that facilitates the coupling reactions even in toluene, a common industrial solvent. In addition, 3-bromopyridine could also be coupled effectively under these conditions, indicating that the catalytic reactivity of this system is high. The reaction could be applied for polymer modification and iterative oligo-pyridone synthesis.
