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Herein, a divergent synthesis of a variety of 2α‐ and 5α‐substituted furan derivatives from 2‐hydroxy‐1,4‐diones is reported. By using appropriate substrates and an acid catalyst, the reactions occurred selectively through cyclization/1,6‐conjugate addition or cyclization/Friedel–Crafts‐type cascade reactions. A broad range of nucleophilic reagents (>10 types for the 1,6‐conjugate addition for...
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