New strategy to construct fused/bridged/spiro carbocyclic scaffolds based on the design of novel 6-C synthon precursor
作者:Jia Liu、Xi Wang、Chang-Liang Sun、Bi-Jie Li、Zhang-Jie shi、Min Wang
DOI:10.1039/c0ob00660b
日期:——
In this article we report a new strategy to build fused/spiro/bridged carbocyclic systems with a novel 6-C synthon from readily available diallyl diacetates through the sequential Pd-catalyzed double allyl alkylation and Diels–Alder annulation. Further exploration on the application of this strategy can construct useful complex scaffolds.
A practical and effective copper-catalyzed dehydrogenative Diels–Alderreaction of gem-diesters and ketone with dienes has been established. The active dienophiles were generated in situ via a radical-based dehydrogenation process, which reacted with a wide variety of dienes to afford various polysubstituted cyclohexene derivatives in good to excellent yields.