| Autor: |
Abd El-Aal, R, Abd El-Latif, F, Koraiem, A |
| Zdroj: |
Proceedings of the Indian Academy of Sciences: Chemical Sciences; 1998, Vol. 110 Issue 4, p433-444, 12p |
| Abstrakt: |
6-Amino-5-cyano-3-methyl-1,4-diarylpyrano[2,3-c]pyrazole derivatives were prepared via the interaction of α, β-unsaturated nitriles with 3-methyl-1-phenylpyrazol-5-one as starting materials in the synthesis of new asymmetrical mono-(tri)-methine cyanine dyes. The new cyanines were characterised by elemental analysis, IR andH-NMR spectral data. The visible absorption spectra of some selected dyes were investigated in pure and mixed solvents as well as in aqueous buffer solutions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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