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To show the synthetic utility of palladium/norbornene (Pd/NBE) cooperative catalysis, here we report concise syntheses of indenone‐based natural products, pauciflorol F and acredinone A, which are enabled by direct annulation between aryl iodides and unsaturated carboxylic acid anhydrides. Compared to the previous indenone‐preparation approaches, this method allows simple aryl iodides to be used as...
Herein we report a direct annulation between aryl iodides and epoxides through palladium/norbornene (Pd/NBE) cooperative catalysis. An iso‐propyl ester substituted NBE was found to be most efficient to suppress the formation of multiple‐NBE‐insertion byproducts and affords the desired 2,3‐dihydrobenzofuran derivatives in 44–99 % yields. The reaction is scalable and tolerates a range of functional...
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