Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 20859-23-8, is researched, Molecular C4H5BrO4, about Synthesis of the Griseusin B Framework via a One-Pot Annulation-Methylation-Double Deprotection-Spirocyclization Sequence, the main research direction is griseusin B framework synthesis annulation methylation deprotection spirocyclization.Synthetic Route of C4H5BrO4.
A highly convergent synthesis of the griseusin B scaffold I is described. The key step involves an efficient one-pot Hauser-Kraus annulation-methylation-double deprotection-spirocyclization sequence that directly affords the target parent tetracyclic ring system starting from phthalide II and substituted enone III.
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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”