Synthesis of Some Novel Aromatic Alkynyl Silanes: Mesomorphic Characterization of Ethynyl-Substituted Rod-Shaped Molecules |
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| Authors: | H T Srinivasa S Hariprasad |
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| Institution: | 1. Department of Studies in Chemistry , Bangalore University , Bangalore , India;2. Raman Research Institute , Sadashivanagara , Bangalore , India;3. Department of Studies in Chemistry , Bangalore University , Bangalore , India |
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| Abstract: | The synthesis and characterization of 10 new rod-shaped substituted benzoates possessing the 4-(2-trimethylsilyl)ethynyl group in terminal phenyl position is reported employing the simple and efficient Sonogashira cross-coupling and DCC esterification. 4′-Dodecylbiphenyl-4-carboxylic(2-trimethylsilylethynyl)-phenyl ester (3i), 4-(4′-hexadecyloxybenzyloxy) carboxylic-4-trimethylsilanylethynyl-phenyl ester (3j), and 1,4-bis(4-(pentyloxy)phenyl)buta-1,3-diyne (7) compounds were evaluated for liquid crystal property. Supplemental materials are available for this article. Go to the publisher's online edition of Molecular Crystals and Liquid Crystals to view the free supplemental file.] |
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| Keywords: | Liquid crystals Smectic mesophase Sonogashira coupling 2-trime- thylsilylethynyl |
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