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Photochromism of dihydroindolizines. Part XVI: first attempts toward molecular wires comprising photochromic dihydro 5-azaindolizines and π-extended ethynyl and butadiynyl oxadiazole derivatives
Journal article   Peer reviewed

Photochromism of dihydroindolizines. Part XVI: first attempts toward molecular wires comprising photochromic dihydro 5-azaindolizines and π-extended ethynyl and butadiynyl oxadiazole derivatives

Saleh Abdel-Mgeed Ahmed
Tetrahedron letters, Vol.51(4), pp.730-733
27/01/2010
DOI: https://doi.org/10.1016/j.tetlet.2009.11.117

Abstract

Dihydro 5-azaindolizines (DHAI) Molecular wires Oxadiazole (OXD) Photochromism Sonogashira coupling
Eight new photochromic dihydro 5-azaindolizines (DHAIs) linked with 2,5-diaryl-1,3,4-oxadiazole (OXD) derivatives containing terminal ethynes and butadiyne substituents on the fluorene part of the DHAI skeleton are synthesized via palladium-mediated coupling reaction pathways. Irradiation of the DHAI-OXD derivatives with polychromatic light affords red- and green-colored betaines.

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