Application of 58656-04-5. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Tricyclohexylphosphonium tetrafluoroborate, is researched, Molecular C18H34BF4P, CAS is 58656-04-5, about Palladium-catalyzed synthesis of 1,2,3,4-tetrahydro-5H-2-benzazepin-5-ones. Author is Okuro, Kazumi; Alper, Howard.
Palladium-catalyzed intermol. cyclocarbonylation of 2-iodobenzylamines with Michael acceptors produces 1,2,3,4-tetrahydro-5H-2-benzazepin-5-ones I [R = H, 7-Cl, 9-F, etc.; E = CF3, EtO2C, MeC(O)] in moderate to good yields. This methodol. enables the direct preparation of highly functionalized 1,2,3,4-tetrahydro-5H-2-benzazepin-5-ones from readily available starting materials.
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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem