Synthesis of arylenealkyne conjugated macrocycles containing a long alkylene bridge |
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| Authors: | Xiaohong Cheng Sigurd Hoeger |
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| Institution: | 1. Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education, School of Chemistry Science and Engineering, Yunnan University, Kunming, 650091, China
2. Institut für Technische Chemie und Polymerchemie, Universit?t Karlsruhe, Engesserstr. 18, 76131, Karlsruhe, Germany
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| Abstract: | The synthesis of the first two arylenealkyne conjugated macrocycles containing a long alkylene bridge via Glaser coupling of template-directed tetraacetylenes was reported. Tetraacetylene intermediates with complex structures were
constructed rapidly via quadruple Hagihara coupling of monoprotected bisacetylenes to appropriate tetraiodides and subsequent desilylation. The characterization
of such compounds was carried out by NMR, GPC and UV-Vis spectra. Unfortunately, the two compounds were not liquid crystals
and had no biaxial nematic mesophase character as expected.
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Translated from Chemical Journal of Chinese Universities, 2007, 28(1): 65–70 译自: 高等学校化学学报] |
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| Keywords: | macrocycles arylenealkyne template biaxial nematic phase liquid crystal |
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