Abstract
This review describes the use of two biomass-derivate butenolides as intermediates in organic synthesis, mucobromic acid and its reduced derivative 3,4-dibromofuran-2(5H)-one. The ambiphilic and ambident character of such butenolides make them versatile starting materials in the synthesis of natural and/or bioactive compounds. Thus, the reactions of mucobromic acid with C-nucleophiles and heteronucleophiles are described, as well as the nucleophilic addition to carbonyl reactions of 3,4-dibromofuran-2(5H)-one. Besides, both compounds are active in diverse metal cross-coupling reactions, manly with palladium in Suzuki and Sonogashira reactions.
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