453-71-4Relevant articles and documents
Substituent effects on the isomerization of hydrazone switches driven by the intramolecular hydrogen bond
Lu, Chaocao,Htan, Bu,Fu, Shitao,Ma, Chunmiao,Gan, Quan
, p. 4010 - 4016 (2019/07/03)
In this work, the substituent effects on hydrogen bonding in one kind of hydrazone-based switch are revealed. The E/Z isomerization ratios of these hydrazones and their intramolecular hydrogen bond strengths in the Z form were evaluated using NMR technique. Linear correlations between these parameters and Hammett empirical values for substituent effects are explored as well.
IMINOTETRAHYDROPYRIMIDINONE DERIVATIVES AS PLASMEPSIN V INHIBITORS
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Page/Page column 53, (2017/07/05)
A series of 2-imino-6-methyltetrahydropyrimidin-4(lH)-one derivatives, substituted in the 6-position by a phenyl moiety which in turn is meta-substituted by an optionally substituted unsaturated fused bicyclic ring system containing at least one nitrogen atom, being selective inhibitors of plasmepsin V activity, are beneficial as pharmaceutical agents, especially in the treatment of malaria.
Stable and easily accessible functional dyes: Dihydrotetraazaanthracenes as versatile precursors for higher acenes
Gampe, Dominique Mario,Kaufmann, Martin,Jakobi, D?rthe,Sachse, Torsten,Presselt, Martin,Beckert, Rainer,G?rls, Helmar
, p. 7571 - 7581 (2015/05/13)
Abstract A series of new dihydrotetraazaanthracenes and one new dihydrotetraazatetracene as substances for applications in organoelectronic devices and as suitable building blocks for higher azaacenes was synthesised. The condensation of aromatic diamines with dichlorodicyanopyrazine led to these tricyclic/tetracyclic compounds. Syntheses of N-substituted phenylenediamines were developed to enable the introduction of multiple functional groups such as ester, amino, or nitro groups on the chromophoric system. Relationships between the structure and the spectroscopic properties could be derived from UV/Vis absorption and fluorescence spectroscopy, as well as by DFT and TD-DFT calculations of molecular and aggregate structures. The absorption spectra are dominated by π-π transitions of the single molecules, whereas aggregation needs to be taken into account to obtain reasonable agreement between theory and experiment in certain cases. Single-crystal X-ray analyses were carried out to examine the morphology and solid packing effects. Finally, a dihydrotetraazaanthracene was used as a building-block to create a mesoionic octaazapentacene. Dihydroazaacenes: A series of dihydrotetraazaanthracenes and one new dihydrotetraazatetracene as substances for applications in organoelectronic devices and as suitable building blocks for higher azaacenes was synthesised. Single-crystal X-ray analyses were carried out to examine the morphology and solid packing effects. Finally, a dihydrotetraazaanthracene was used as a building-block to create a mesoionic octaazapentacene.
