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 Developing design tools for introducing and tuning structural order in ionic liquids.Application of 693-67-4.
To investigate what is driving structural order in imidazolium-based ionic liquids (ILs) a series of asym. 1-dodecyl-2-methyl-3-alkylimidazolium bromides I [R = H, Me, n-Bu, etc.] was synthesized, fully characterized and their structures and properties compared with the analogous 1-dodecyl-3-alkylimidazolium as well as the 1,2,3-triazolium bromides. The aim was to examine the influence of the replacement of the most acidic 2-H proton on the imidazolium head group by methylation on the properties and structure of ILs. For all compounds, except for compounds with butyl- and hexyl-chains as well as the protonated species, mesophase formation was observed Obviously, the simple presence of long alkyl chains such as dodecyl (a design concept frequently put forward in the literature) was not sufficient to support mesophase formation alone. Rather, for the formation of a liquid crystalline phase, a balance between attractive van der Waals forces, hydrogen bonds, and electrostatic interactions was required. Data from temperature-dependent small-angle X-ray scattering (SAXS) and polarizing optical microscopy (POM) suggested three different cation conformations for the studied compounds I: cations with 0 ≤ n ≤ 4 exhibited a near-linear conformation; for 5 ≤ n ≤ 10 a V-shape is adopted, and for n = 11 or 12 a U-shape was found. It was demonstrated that the structural possibility for an interdigitation of the long chains is an influential factor for the formation of a mesophase.
In addition to the literature in the link below, there is a lot of literature about this compound(1-Bromoundecane)Application of 693-67-4, illustrating the importance and wide applicability of this compound(693-67-4).
Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem