291312-74-8Relevant academic research and scientific papers
NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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Page/Page column 20, (2010/12/29)
Provided are novel organic electroluminescent compounds and an organic electroluminescent device including the same. The disclosed organic electroluminescent compounds exhibit high luminescence efficiency in blue color and excellent life property. Thus, they may be used to manufacture OLEDs having very good operation life.
TMSCH2Li and TMSCH2Li-LiDMAE: Efficient reagents for noncryogenic halogen-lithium exchange in bromopyridines
Doudouh, Abdelatif,Woltermann, Christopher,Gros, Philippe C.
, p. 4978 - 4980 (2008/02/07)
(Chemical Equation Presented) TMSCH2Li and TMSCH 2Li-LiDMAE have been used efficiently for bromine-lithium exchange in 2-bromo-, 3-bromo-, and 2,5-dibromopyridines under noncryogenic conditions, while low temperatures (-78 to -100°C) are always needed with n-BuLi. The aminoalkoxide LiDMAE induced a remarkable C-2 selectivity with 2,5-dibromopyridines in toluene at 0°C, which was unprecedented at such a temperature. The lithiopyridines were successfully reacted witb electrophiles also under noncryogenic conditions giving the expected adducts in good yields.
Synthesis of 5-bromopyridyl-2-magnesium chloride and its application in the synthesis of functionalized pyridines
Song, Jinhua J.,Yee, Nathan K.,Tan, Zhulin,Xu, Jinghua,Kapadia, Suresh R.,Senanayake, Chris H.
, p. 4905 - 4907 (2007/10/03)
(Chemical Equation Presented) The 5-bromopyridyl-2-magnesium chloride (2), which was not accessible previously, was efficiently synthesized for the first time via an iodomagnesium exchange reaction with 5-bromo-2-iodopyridine (1). This reactive intermediate was allowed to react with a variety of electrophiles to afford a range of useful functionalized pyridine derivatives. Application of this methodology to 5-bromo-2-iodo-3-picoline provided a simple and economical synthesis of a key intermediate for the preparation of Lonafarnib, a potent anticancer agent.
Selective monolithiation of 2,5-dibromopyridine with butyllithium
Wang, Xin,Rabbat, Philippe,O'Shea, Paul,Tillyer, Richard,Grabowski,Reider, Paul J.
, p. 4335 - 4338 (2007/10/03)
Selective monolithiation of 2,5-dibromopyridine at either the 2-position or the 5-position is reported. Solvent and concentration strongly influence the selectivity. Coordinating solvents and higher concentration favor the 5- position while non-coordinati
