https://www.selleckchem.com/pr....oducts/epacadostat-i
Detailed analysis of the stereodetermining transition structures allowed us to establish the origin of the reaction enantioselectivity.Pd-catalyzed spiroannulation of 4-bromocoumarin with alkynes has been illustrated. The reaction highlights an interesting process for cascade formation of two five-membered rings through spiroannulation followed by cyclization via C-H activation. This method offers an attractive platform for the synthesis of a broad range of indane-fused spiropentadiene chromanones in good yields.In this s
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