200930-73-0Relevant academic research and scientific papers
DIAMINE COMPOUND, POLYIMIDE PRECURSOR AND POLYIMIDE FILM PREPARED BY USING SAME
-
Paragraph 0183-0186; 0213-0215, (2020/07/01)
The present invention includes a sulfonyl group (sulfonyl). A polyimide precursor and a manufacturing method thereof are provided to improve reactivity during polymerization and to remarkably increase molecular weight by including a novel diamine as a polymerization component. , It is possible to provide a polyimide film having improved mechanical and thermal properties while maintaining the optical properties of the polyimide containing a sulfonyl group. (by machine translation)
Nucleophilic substitutions at the pyridine ring. Conformational preference of the products and kinetics of the reactions of 2-chloro-3-nitro- and 2-chloro-5-nitro-pyridines with arenethiolates
Hamed, Ezzat A.,El-Bardan, Ali A.,Saad, Esmat F.,Gohar, Gamal A.,Hassan, Ghada M.
, p. 2415 - 2421 (2007/10/03)
The reactions of 2-chloro-3-nitropyridine 1 and 2-chloro-5-nitropyridine 2 with arenethiolates 3a-i result in arylthio-dechlorination to give 2-arylthio-3-nitropyridines 4a-i and 2-arylthio-5-nitropyridines 5a-i. A 1H NMR study and AM1 calculat
