Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.293, 239-245, 1997
Transformation of Liquid-Crystalline Diaryldiacetylenes to Liquid-Crystalline 2,5-Diarylthiophenes
Liquid-crystalline 2,5-diarylthiophene derivatives were prepared directly by the reaction of liquid-crystalline diaryldiacetylene derivatives derived from the coupling reaction of alkynyliodonium salts with organocopper reagents. The 2, 5-diarylthiophene derivaties prepared in the present study exhibit the nematic phase.
Keywords:COUPLING REACTIONS;TOSYLATES