New discoveries in chemical research and development in 2021. As an important bridge between the micro, chemistry is one of the main methods and means for humans to understand and transform the material world. In an article, author is Wan, Danyang, once mentioned the application of 22439-61-8, COA of Formula: https://www.ambeed.com/products/22439-61-8.html, category is benzoxazole. Now introduce a scientific discovery about this category.
A novel liquid crystal core unit 6,7-dihydrocyclopenta[5,6-b]benzofuran was designed and three different kinds of liquid crystals2MUF, 2MP4, 2MYO2were synthesised through a facile route which employed palladium-catalysed cascade Sonogashira coupling/cyclisation as a key step. Initially, density function theory calculation illustrated that a compound based on this new unit possessed almost a linear structure. The mesophase and physical properties of these novel compounds were measured and the impacts of the newly designed core unit on these properties were investigated by comparing with two series of analogous materials which contained classical mesogenic cores 1,4-disubstituted benzene andtrans-cyclohexyl benzene, finding that the introduction of 6,7-dihydrocyclopenta[5,6-b]benzofuran into liquid crystals tended to promote the formation of nematic phase while increasing both the melting points and the clearing points of target molecules. Meanwhile, the newly synthesised liquid crystals presented higher birefringences when compared with their corresponding reference compounds, indicating that 6,7-dihydrocyclopenta[5,6-b]benzofuran can be a hopeful candidate for the construction of high birefringence liquid crystals.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem