Prenylated flavanones were obtained from ortho‐allyloxy chalcones through a one‐pot sequence of Claisen rearrangement and 6‐endo‐trig cyclization, followed by olefin cross metathesis of the intermediate allyl flavanones with 2‐methyl‐2‐butene. The synthetic utility of this route is illustrated for the synthesis of several naturally occurring prenyl flavanones.
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