Product Details of 1787246-78-9. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: (5aS,10bR)-2-(2,6-Diethylphenyl)-4,5a,6,10b-tetrahydro-2H-indeno[2,1-b][1,2,4]triazolo[4,3-d][1,4]oxazin-11-ium tetrafluoroborate, is researched, Molecular C22H24BF4N3O, CAS is 1787246-78-9, about Switchable Access to Different Spirocyclopentane Oxindoles by N-Heterocyclic Carbene Catalyzed Reactions of Isatin-Derived Enals and N-Sulfonyl Ketimines. Author is Wang, Lei; Li, Sun; Bluemel, Marcus; Puttreddy, Rakesh; Peuronen, Anssi; Rissanen, Kari; Enders, Dieter.
A novel NHC-catalyzed annulation protocol for the asym. synthesis of biol. important β-lactam fused spirocyclopentane oxindoles with four contiguous stereocenters, including two quaternary carbon centers, was developed. Alternatively, spirocyclopentane oxindoles containing an enaminone moiety can be achieved using the same starting materials, isatin-derived enals, and N-sulfonyl ketimines, in the presence of a slightly different NHC catalytic system. This switchable annulation strategy enables the selective assembly of both heterocyclic scaffolds with good yields and excellent enantioselectivities for a broad range of substrates.
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