Category: imidazoles-derivatives. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Tricyclohexylphosphonium tetrafluoroborate, is researched, Molecular C18H34BF4P, CAS is 58656-04-5, about Spirooxindole synthesis via palladium-catalyzed dearomative reductive-Heck reaction. Author is Liu, Ren-Rong; Xu, Yang; Liang, Ren-Xiao; Xiang, Bin; Xie, Hu-Jun; Gao, Jian-Rong; Jia, Yi-Xia.
Palladium-catalyzed intramol. dearomative reductive-Heck reaction of C2-substituted indoles is developed, which provides access to structurally diverse 3,2′-spiropyrrolidine oxindoles. By changing the hydride source to AcONa base, direct C3-arylation products [2,3-b]quinolinones are achieved in good yields. The reaction of C2-substituted benzofuran is also realized, delivering the desired spiro-product.
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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem