Product Details of 693-67-4. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Coumarin dimers of benzidine and phenylenediamine cores: synthesis, characterisation and mesomorphic properties. Author is Mohammad, Abdulkarim-Talaq; Al-Mohammedi, Mohammad Hameed; Ghdhayeb, Mohammed Zghair; Husain Al-Majidi, Suaad Mohammed.
Three new homologous series of coumarin heterocycles-derived mesogens I (X = biphenyl-4,4′-diyl, benzene-1,4-diyl, 3,3′-dimethoxy-biphenyl-4,4′-diyl; R = C6H13, C10H21, C14H29, etc.) have been synthesized and characterized. The sym. dimers of coumarin contain two Schiff base moieties as connecting groups with Ph or biphenyl central cores. Thermal, mesophase behaviors and textural types were studied by DSC and POM instrumentations. The nematic mesophase was enhanced prominently for most of the compounds, and appeared in relatively medium to long alkyl chain at both terminals of the mols.
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Reference:
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