Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Research Support, Non-U.S. Gov’t, Organic & Biomolecular Chemistry called Synthesis of substituted azafluorenones from dihalogeno diaryl ketones by palladium-catalyzed auto-tandem processes, Author is Marquise, Nada; Dorcet, Vincent; Chevallier, Floris; Mongin, Florence, which mentions a compound: 58656-04-5, SMILESS is F[B-](F)(F)F.[PH+](C1CCCCC1)(C2CCCCC2)C3CCCCC3, Molecular C18H34BF4P, Product Details of 58656-04-5.
Substituted azafluorenones such as I (R = H, F3C; R1 = Ph, 4-HOC6H4, 3-thienyl, 2-benzo[b]thienyl) were prepared by tandem Suzuki coupling and arylation reactions of dihalo-substituted pyridinyl aryl ketones such as II (R = H, F3C) with aryl- and methylboronic acids such as R1B(OH)2 (R1 = Ph, 4-HOC6H4, 3-thienyl, 2-benzo[b]thienyl) in the presence of Pd(OAc)2, tricyclohexylphosphium tetrafluoroborate, and K2CO3 in DMF at 130°; in some cases, uncyclized Suzuki coupling products were also formed. Under similar conditions, reaction of II (R = H) with tert-Bu acrylate yielded (E)-I (R = H; R1 = t-BuO2CCH:CH); the reaction of an iodobenzoyl chloropyridine yielded only Heck reaction product without coupling. The structures of I (R = H, F3C; R1 = Ph), of 7-phenyl-4-aza-9-fluorenone, and of 1-phenyl-2-aza-9-fluorenone were determined by X-ray crystallog.
This compound(Tricyclohexylphosphonium tetrafluoroborate)Product Details of 58656-04-5 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.
Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem