期刊
SYNTHESIS-STUTTGART
卷 -, 期 4, 页码 605-609出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2008-1032156
关键词
sonogashira coupling; liquid crystals; 1,2,4-oxadiazoles; acetylenes
A series of highly pi-conjugated nonsymmetrical liquid crystals, based on the core 3,5-(disubstituted)-1,2,4-oxadiazole with a shape similar to a hockey stick, were successfully synthesized by convergent Sonogashira coupling reaction between the building blocks of aryl iodides and the corresponding terminal arylacetylenes, using 3-[4-(decyloxy)phenyl]-5-(haloaryl)-1,2,4-oxadiazoles or decyl 4-iodobenzoate (10) and terminal arylacetylenes. This versatile synthetic route yielded luminescent mesogens with smectic and nematic phases, typical of calamitic compounds.
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