• Title/Summary/Keyword: Dicyanopyrazine

Search Result 11, Processing Time 0.021 seconds

Synthesis and characteristics of 2,3-dicyanopyrazine derivatives substituted spiropyran (Spiropyran을 도입한 신규 2,3-dicyanopyrazine 유도체의 합성과 물성)

  • Lee, Bum-Hoon;Jaung, Jae-Yun
    • Proceedings of the Korean Fiber Society Conference
    • /
    • 2002.04a
    • /
    • pp.131-134
    • /
    • 2002

  • Pyrazines are known to exhibit a range of physiological activities. As we mentioned earlier, the importance of dicyanopyrazine derivatives lies mainly in the chemical industry and many other fields such as food, agricultural, medicinal chemistry because of their specific properties. And then, a large number of research papers have been published about the characteristics of dicyanopyrazine derivatives[1,2]. (omitted)

  • PDF

Syntheses and Thermal Properties of 5,10-Disubstituted-2,3,7,8-tetracyano-5,10-dihydrodipyrazino [2,3-b:2′,3′-el pyrazines and Polymeric Porphyrazines Derived from 2,3-Dichloro-5,6-dicyanopyrazine

  • Jaung, Jae-yun;Kim, Sung-Dong
    • Fibers and Polymers
    • /
    • v.1 no.2
    • /
    • pp.71-75
    • /
    • 2000

  • Intermolecular cyclization of 2-alkylamino-3-chloro-5,6-dicyanopyrazine 2 in the presence of tributylamine in N,N-dimethylformamide (DMF) gave 5,10-disubstituted-2,3,7,8-tetracyano -5,10-dihydrodipyrazino〔2,3-b:2',3'-e]pyrazines 3, which showed strong mesomorphic property and were anticipated as new chromophoric system for functional dye materials. Absorption spectra, fluorescent properties and other physical properties were correlated with their chemical structures. Vanadyl oligomeric porphyrazine with long alkyl groups synthesized from 3 had satisfactory solubility in tetrahydrofuran (THF), diethyl ether and dimethylsulfoxide (DMSO). The syntheses and characterization of vanadyl polymeric porphyrazines derived from 3 with long alkyl groups are reported.

  • PDF

Synthesis and characteristics of 2,3-dicyanopyrazine derivatives. (신규 2,3-dicyanopyrazine유도체의 합성과 특성)

  • Lee, Bum-Hoon;Jaung, Jae-Yun
    • Proceedings of the Korean Fiber Society Conference
    • /
    • 2001.10a
    • /
    • pp.247-250
    • /
    • 2001

  • 2, 3-Dicyanopyrazine derivatives have been synthesized by condensation of diaminomaleonitrile(DAMN) and a -diketone compounds. Diaminomaleohitrile (DAMN) is well known as a tetramer of hydrogen cyanide and a useful compound in the chemical industry not on]y as a starting material for synthesis of various heterocyclic compounds but also as an intermediate for synthesis of glycine, adenine, guanine et al. (omitted)

  • PDF