Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. 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.Recommanded Product: 693-67-4.
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:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem