International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed

ISSN: 2319-7064


Downloads: 99 | Views: 257 | Weekly Hits: ⮙1 | Monthly Hits: ⮙1

Research Paper | Chemical Sciences | Egypt | Volume 9 Issue 8, August 2020


N-Bridge Head Indolizin (Benzindolizin)-ium Iodide as Privileged Precursor in Heterocyclic Cyanine Dye Synthesis

A. I. M. Koraiem [2] | M. M. Gommaa [2] | H. A. El-Damarany [2] | M. H. Yosry [2]


Abstract: 3-Methyl-1-phenyl-pyrazolin-5-imin-4 (2)-indolizine (benzoindolizine)-zero-3 (4)-methine (27).3-methyl-1-phenyl-pyrazolin-5-imine-4 (2)-indolizine (benzo- indolizine)-B-substituted di-1- [2 (4)] methine cyanine dyes (28a-d).3-methyl-1-phenyl-pyrazolin-5-imine-4 (2)-indolizine (benzo indolizine)-? (?) disubstituted- bis-di- [2 (4)] methine cyanine dyes (30a-f) were synthesised based on 4-acetyl-1, 5-dimethyl-3-phenyl-3, 4-di [H] pyrazolo [4', 3':5, 6] pyrido [4, 3-b] indolizin-6-ium iodide & 4-Acetyl-1, 5-dimethyl-3-phenyl-3, 4-di [H] Pyrazolo [4', 3':5, 6] pyrido [4, 3-b] indolizin-6-ium-iodide (26a, b) & 1, 5-dimethyl-3-phenyl-3, 4-di [H] pyrazolo [4', 3':5, 6] pyrido [4, 3-b] indolizin-6-ium-iodide-4-?-substituted-?, ?-unsaturated carbonyl derivatives (29a-f). The new synthesized cyanine dyes were identified by elemental & spectral analyses. The UV-visible absorption spectra of some selected dyes were investigated in pure organic solvents and in aqueous universal buffer solutions.


Keywords: Indolizine, Benzindolizine, Cyanine Dye Synthesis, Solvato-(Media)-chromic Behaviour


Edition: Volume 9 Issue 8, August 2020,


Pages: 795 - 803


How to Download this Article?

Type Your Valid Email Address below to Receive the Article PDF Link


Verification Code will appear in 2 Seconds ... Wait

Top