183438-24-6Relevant articles and documents
The synthesis and characterisation of novel thienyl-pyrimidine liquid crystalline materials
Wilson, Paul,Lacey, David,Sharma, Sanjay,Worthington, Brenda
, p. 279 - 292 (2001)
The synthesis and transition temperatures of a series of novel thienyl-pyrimidine liquid crystalline materials is described. Palladium catalysed coupling of 5-n-alkyl-2-tri-n-butylstannyl thiophenes to 5-bromo-2-iodopyrimidine is used to create novel pyrimidine compounds which exhibit lower melting points than similar pyrimidine liquid crystals. These compounds exhibit a variety of phases including smectic A, C, G, B and hexstatic B also they exhibit several as yet unidentifiable phases. Speculation as to hydrogen bonding in the liquid crystalline core is also discussed therein.
ORGANIC COMPOUNDS, ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTID DEVICE HAVING THE COMPOUNDS
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Paragraph 0150-0153, (2019/09/04)
The present invention relates to an organic compound in which a bipyrimidine moiety serving as an electron acceptor is connected via an aromatic linker to a hetero-aromatic moiety serving as an electron donor and containing one to two nitrogen atoms. The organic compound, since it contains both electron donor and electron acceptor moieties in a single molecule, allows electric charges to move easily, thereby increasing luminance efficiency. Also, since the electron donor is made of solid condensed aromatic rings, such as carbazole, acridine, or indole rings, the 3D structure of the molecule is hindered. Thus, the organic compound of the present invention may be used as a delayed fluorescence dopant emitting a blue light of high chromatic purity. The organic compound of the present invention may be applied to organic light-emitting devices, such as an organic light-emitting diode, a display device, and a lighting device, to lower the driving voltage thereof while increasing luminance efficiency and chromatic purity thereof.COPYRIGHT KIPO 2019
TRICYCLIC GYRASE INHIBITORS FOR USE AS ANTIBACTERIAL AGENTS
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Paragraph 0411; 0412; 0413, (2014/04/03)
Disclosed herein are compounds having the structure of Formula I and pharmaceutically suitable salts, esters, and prodrugs thereof that are useful as antibacterially effective tricyclic gyrase inhibitors. In addition, species of tricyclic gyrase inhibitors compounds are also disclosed herein. Related pharmaceutical compositions, uses and methods of making the compounds are also contemplated.
Preparation of highly reactive pyridine- and pyrimidine-containing diarylamine antioxidants
Hanthorn, Jason J.,Valgimigli, Luca,Pratt, Derek A.
experimental part, p. 6908 - 6916 (2012/10/08)
We recently reported a preliminary account of our efforts to develop novel diarylamine radical-trapping antioxidants (Hanthorn, J. J. et al. J. Am. Chem. Soc. 2012, 134, 8306-8309) wherein we demonstrated that the incorporation of ring nitrogens into diphenylamines affords compounds which display a compromise between H-atom transfer reactivity to peroxyl radicals and stability to one-electron oxidation. Herein we provide the details of the synthetic efforts associated with that report, which have been substantially expanded to produce a library of substituted heterocyclic diarylamines that we have used to provide further insight into the structure-reactivity relationships of these compounds as antioxidants (see the accompanying paper, DOI: 10.1021/jo301012x). The diarylamines were prepared in short, modular sequences from 2-aminopyridine and 2-aminopyrimidine wherein aminations of intermediate pyri(mi)dyl bromides and then Pd-catalyzed cross-coupling reactions of the amines and precursor bromides were the key steps to yield the diarylamines. The cross-coupling reactions were found to proceed best with Pd(η3-1-PhC3H 4)(η5-C5H5) as precatalyst, which gave higher yields than the conventional Pd source, Pd2(dba) 3.