3964-73-6Relevant articles and documents
Compound and organic electroluminescent device
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Paragraph 0120; 0121; 0122; 0123, (2019/02/17)
The invention discloses a compound, a material and an organic electroluminescent device. The compound is the compound as shown in the following formula I. The compound as shown in the following formula I has a special loop coil structure, can effectively block conjugation in molecules, and increase energy level width; and meanwhile, the loop coil structure has relatively high molecular rigidity, arelatively high glass transition temperature and high heat stability; and the material of the novel structure is used as the organic electroluminescent device of a hole transport layer; and comparedwith the organic electroluminescent device made of the hole transport layer cavity material in the prior art, the organic electroluminescent device has high element efficiency.
Cyclizations of phenylethyl-substituted pyridinecarboxaldehydes
Naredla, Rajasekhar Reddy,Klumpp, Douglas A.
, p. 2137 - 2141 (2013/03/14)
Several phenylethyl-substituted pyridinecarboxaldehydes were prepared from 2-bromo-3-pyridine-carboxaldehyde and these substances are found to undergo cyclization reactions in acidic media. In the absence of added nucleophile, acid-promoted cyclization and oxidation (MnO2) provide an efficient route to 10,11-dihydro-5H-benzo[4,5]cyclohepta[1,2-b]pyridin-5-ones. Arene nucleophiles may also be added to the acidic mixture to provide good yields of triarylmethane products. Mechanisms are proposed involving dicationic superelectrophilic intermediates.