Buchwald protocol applied to the synthesis of N-heterotolan liquid crystals
作者:Ursula B. Vasconcelos、Abel Schrader、Guilherme D. Vilela、Antonio C.A. Borges、Aloir A. Merlo
DOI:10.1016/j.tet.2008.03.005
日期:2008.5
A homologous series of the new N-heterotolans 8a-d were synthesized using two cross-coupling reactions mediated by copper and palladium/copper. The final compounds present the phenyl-pyridyl framework connected by the acetylene group. The evaluation of thermal properties for this series is described. All compounds exhibit the smectic A and X mesophase. For comparison were also synthesized compounds 10, 12, and 14. Their LC properties are reported. (C) 2008 Elsevier Ltd. All rights reserved.
Synthesis and Thermal Behavior of New <i>N</i>-Heterotolan Liquid Crystals
作者:Ursula B. Vasconcelos、Emilene Dalmolin、Aloir A. Merlo
DOI:10.1021/ol047524e
日期:2005.3.1
The synthesis of liquid crystal series 9a-d was achieved using the Buchwald protocol and Sonogashira reaction.
Synthesis and Mesomorphic Behavior of New<i>N</i>-Heterotolane Liquid Crystals Containing a Naphthyl-Pyridyl Framework
作者:Aloir A. Merlo、Ursula B. Vasconcelos
DOI:10.1055/s-2006-926384
日期:——
A homologous series of the new N-heterotolane was synthesized using two cross-coupling reactions mediated by copper and palladium/copper. The final compounds present a naphthyl-pyridyl framework connected by an acetylene group. The evaluation of physico-chemical properties is described. All the compounds exhibit the smectic A mesophase.