Mazars, Francois published the artcileSynthesis of Azolium-2-dithiocarboxylate Zwitterions under Mild, Aerobic Conditions, Quality Control of 258278-25-0, the publication is European Journal of Organic Chemistry (2021), 2021(13), 2025-2033, database is CAplus.
Twelve imidazolium-, imidazolinium-, or benzimidazolium-2-dithiocarboxylate zwitterions with aliphatic or aromatic substituents on their nitrogen atoms, including four new unsym. 1-alkyl-3-arylimidazolium derivatives, were obtained in high yields (62-96%) upon reaction of azolium salts with CS2 and Cs2CO3 in acetonitrile at room temperature Compared to the previous strategies devised for the synthesis of NHC·CS2 betaines, this novel procedure relied on an innocuous, weak base and could be applied under mild aerobic conditions. All the new compounds were fully characterized by various anal. techniques and the mol. structures of two of them were determined by XRD anal. An associative mechanism involving the concerted reaction of the azolium salts with both CS2 and CO32- was tentatively proposed to account for the formation of the zwitterionic adducts without the intervention of free carbenes. This would explain the good results obtained with a weak inorganic base that lacks the strength needed to deprotonate the azolium salt substrates.
European Journal of Organic Chemistry published new progress about 258278-25-0. 258278-25-0 belongs to imidazoles-derivatives, auxiliary class Achiral NHCs Ligands, name is 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, and the molecular formula is C27H39ClN2, Quality Control of 258278-25-0.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem