219926-41-7Relevant academic research and scientific papers
Metal complex containing phenyl-pyridines connected to carbazoles, it's preparation method and it's applications
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Paragraph 0024; 0030-0031, (2017/04/03)
PURPOSE: A carbazole structure-connected phenyl-pyridien metal complex compound is provided to use in a blue organic light emitting diode. CONSTITUTION: A metal complex compound contains a phernylpyridine structure which is connected with carbazole structure of chemical formula 1. In chemical formula 1, M is a metal having 40 or more of atomic weight; m is 1 or more; n is 0 or more; X-Y is ancillary ligand; and R1 is alkyl of C1-16 or alkyl ether group of C1-16. A light emitting device contains an organic layer having a compound of phenyl-pyridine structure.
Electrophilic ipso substitution of trimethylsilyl groups in fluorobenzenes
Coe, Paul L.,Stuart, Alison M.,Moody, David J.
, p. 27 - 32 (2007/10/03)
Using variants of literature methods 2,4- and 2,6- difluorophenyltrimethylsilanes have been bromodesilylated to the corresponding bromodifluorobenzenes in moderate to good yields, 3-bromo-2,6-difluorophenyltrimethylsilane afforded 1,3-dibromo-2,4-difluorobenzene whilst 1,3-difluoro-2,4-bis(trimethylsilyl)benzene yielded 3-bromo-2,6-difluorophenyltrimethylsilane. Application of either the Eaborn or Chvalovsky methods of nitrodesilylation to 4-fluorophenyltrimethylsilane, 2,4-difluorophenyltrimethylsilane and 2,6-difluorophenyltrimethylsilane afforded largely the corresponding desilylated products together with products associated with initial protodesilylation, followed by nitration of the resulting fluorobenzenes. The results obtained show that ipso desilylation in the fluoroaromatic series does follow the expected pattern previously obtained in the hydrocarbon analogues. They also show that in some cases the formation of unusually substituted fluoroarenes can be achieved more readily than by the methods previously used.
