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Synthesis 1996; 1996(5): 614-620
DOI: 10.1055/s-1996-4260
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A Versatile Palladium-Catalyzed Synthesis of n-Alkyl-Substituted Oligo-p-phenyls

Patrick Galda, Matthias Rehahn*
  • *Universität Karlsruhe, Polymer-Institut, Kaiserstraße 12, D-76128 Karlsruhe, Germany, Fax +49(721)6083153
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Publication Date:
31 December 2000 (online)

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High-yield Pd-catalyzed syntheses of constitutionally homogeneous, n-alkyl-substituted oligo-p-phenyls having three to fifteen benzene rings connected to each other exclusively in the 1,4-(para-) fashion are reported. Most of the oligomers described readily dissolve in common organic solvents. Furthermore, their thermal phase-transition temperatures show that some of these rodlike oligomers can exist in different crystalline modifications and/or form liquid-crystalline mesophases.

oligo-p-phenyls - Pd-catalyzed condensation - Suzuki reaction - rodlike molecules - liquid crystals