20279-16-7Relevant articles and documents
NOVEL AMINE-BASED COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
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Paragraph 0099; 0100; 0101; 0110, (2019/06/17)
The present invention relates to a novel amine-based compound represented by Chemical Formula 1 and an organic light emitting device including the same. The compound provides improved efficiency, low driving voltage, and improved lifetime characteristic of the organic light emitting device.
Rhodium-catalyzed tandem annulation and (5 + 1) cycloaddition: 3-hydroxy-1,4-enyne as the 5-carbon component
Li, Xiaoxun,Song, Wangze,Tang, Weiping
, p. 16797 - 16800 (2013/12/04)
A Rh-catalyzed tandem annulation and (5 + 1) cycloaddition was realized. 3-Hydroxy-1,4-enyne served as the new 5-carbon component for the (5 + 1) cycloaddition. Substituted carbazoles, dibenzofurans, and tricyclic compounds containing a cyclohexadienone moiety could be prepared efficiently. The identification of a byproduct suggests that metal carbene and ketene intermediates may be involved in the (5 + 1) cycloaddition.
Synthesis of psoralen analogues based on dibenzofuran
Oliveira, Ana M. A. G.,Raposo, M. Manuela M.,Oliveira-Campos, Ana M. F.,Griffiths, John,Machado, Antonio E. H.
, p. 2900 - 2907 (2007/10/03)
The syntheses of four novel psoralen derivatives, 6a-d, of the benzofurocoumarin (=benzofuro[1]benzopyranone) type containing an ester group are described. These compounds might be of interest in PUVA (psoralen long-wave ultraviolet radiation) therapy. The overall efficiency of the synthetic procedure is greatly limited by the low yields for the penultimate step, i.e., formylation of the dibenzofuranols 3a,c or protected dibenzofuranol 4d to the carboxaldehydes 5 (Scheme 4). However, the final stage to form the pyranone ring from 5a - d proceeds smoothly (Scheme 5).