New discoveries in chemical research and development in 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals. In an article, author is Weng, Qiang, once mentioned the application of 94790-35-9, Recommanded Product: N-(Chloro(dimethylamino)methylene)-N-methylmethanaminium hexafluorophosphate(V), Name is N-(Chloro(dimethylamino)methylene)-N-methylmethanaminium hexafluorophosphate(V), molecular formula is C5H12ClF6N2P, molecular weight is 280.5794, MDL number is MFCD01862891, category is benzoxazole. Now introduce a scientific discovery about this category.
Fluorinated aromatics is generally chosen as mesogenic cores to design novel liquid crystal compounds. Here, a series of benzoxazole derivatives with laterally multifluorinated biphenyl units, 2-(3 ‘,3-difluoro -4 ‘-alkoxy-1,1 ‘-biphenyl-4-yl)-benzoxazole derivatives (coded as nPF(3)PF(3)Bx), are synthesized and characterized, where methyl and nitro moieties are selected as terminal groups to investigate the effects of different polar substituents on the liquid crystal properties. The compounds nPF(3)PF(3)Bx show enantiotropic mesophases with mesophase ranges of 0-40 degrees C and 0-63 degrees C on heating and cooling for hydrogen-terminated derivatives (nPF(3)PF(3)BH), 43-93 degrees C and 54-123 degrees C for methyl-terminated ones (nPF(3)PF(3)BM), 60-108 degrees C and 74-152 degrees C for nitro terminated ones (nPF(3)PF(3)BN), respectively. They exhibit photoluminescence emission peaks at 390-392 nm and UV-vis absorption bands with maxima at 327-330 nm, respectively. The results reveal that lateral multifluoro substituents lead to a decrease in melting/clearing points, while electron-withdrawing terminal nitro moiety results in increases in both melting point and mesophase range. [GRAPHICS] .
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem