Abstract

FLORES-JARILLO, Mariana et al. Synthesis of Fluorescent oligo(p-phenyleneethynylene) (OPE3) via Sonogashira Reactions. J. Mex. Chem. Soc [online]. 2015, vol.59, n.2, pp.151-160. ISSN 1870-249X.

Sonogashira reactions of 4-(2,5-diiodobenzoyl)morpholine and 4-(5-bromo-2-iodobenzoyl)morpholine with arylacetylenes catalyzed by Pd₂(dba)₃ in DMSO allowed preparation of fluorescent oligo(p-phenyleneethynylene)s (OPE3) with fluorescence quantum yields up to 0.87. DMSO proved to be very efficient for this double Sonogashira coupling in which other solvents failed.

Keywords : Sonogashira coupling; oligo(p-phenyleneethynylene)s; OPE3; fluorescence.