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摘要
Abstract(#br)A novel organocatalytic approach to γ,γ‐disubstituted butenolides is described. It is based on a fully site‐selective functionalization of 5‐alkylidenefuran‐2(5 H )‐ones via trienamine‐mediated [4 2]‐cycloaddition with α,β,γ,δ‐diunsaturated aldehydes. The developed methodology proceeds ...
