Rapid Methods of Synthesis of Stilbene and Phenylethynylstilbene Arms
Issa Samb *
University Alioune Diop, Research Team in Organic and Therapeutic Chemistry (ECOT), BP 30 Bambey, Senegal.
Veronique Michelet
Faculty of Sciences, Institut de Chimie de Nice, University Côte d’Azur, UMR 7272 CNRS, Valrose Park, 06108, Nice Cedex 2, France.
*Author to whom correspondence should be addressed.
Abstract
Stilbene and phenylethynylstilbene units are excellent candidates for fluorescent sensor synthesis. In this paper we show a fast and efficient method for the preparation of fluorophores based on biphenyl nuclei with phenylene-vinylene units functionalized by donor groups. Using pallado catalysed coupling reactions of Sonogashira types and Wittig or Wittig-Horner reaction, the stilbene and phenylethylsilbene arms functionalized with O-alkyl and N-alkyl donor groups were synthesized.
Keywords: Stilbene, phenylethynylstilbene, photophysical, photochemical properties