Molbank

Vinylimidazolium salts constitute a highly relevant class of polymerizable heterocycles, especially in the field of so-called polymer ionic liquids (PILs), and they are frequently used as components of polyelectrolytes. Therefore, crystallographic characterizations, in particular studies of charge distribution and conformational features, can provide fundamental insights concerning ion–ion and ion–dipole interactions. The structure of the title compound [1046127-79-0] has the space group symmetry P2₁/c. Its asymmetric unit contains one formula unit, consisting of two bromide anions and the halves of two cation moieties. The cation units possess inversion symmetry, and their C₆H₁₂ chains adopt an all-trans conformation.

As a part of an SAR study aimed at testing the antitumor activity of some C₁₅ acetogenins related to mycalin A, we report here the synthesis of the C-1 debromo-derivative of laurenciallene, a substance recently isolated from the red alga Laurencia obtusa. This new substance has been obtained by the selective, reductive debromination of the terminal bromoallene moiety of laurenciallene with Zn/AcOH. Its structure has been fully characterized by spectral methods, including 2D-NMR spectra.

Here, we synthesized 2,3,4,6-tetra(9H-carbazol-9-yl)benzonitrile (4CzHPN) via visible-light-driven photocatalytic monodecyanation using the versatile metal-free catalyst 4CzIPN. Characterized by NMR, IR, X-ray diffraction, and DFT calculations, it features a 3.49 eV HOMO-LUMO gap and shows blue-shifted absorption/emission, emerging as a promising advanced metal-free photoredox catalyst.