Abstract
Through our investigation of synthetic routes to tetronic acids, elaboration and cyclization of γ-acetoxy-β-ketoesters were examined. Synthesis of these β-ketoesters 2 has been realized by selective monoacylation of the magnesioenolate of monoethyl malonate. Lactonization of 2 leading to tetronic acids or to 4-alkoxy-furan-2(5 H )-ones is reported.
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