Cyclisation of 6-hydroxy-2-ynals and ynoates: a new pathway to substituted 2-nethylene-tetrahydrofurans

D Pflieger, B Muckensturn

文献索引：Pflieger, D.; Muckensturm, B. Tetrahedron, 1989 , vol. 45, # 7 p. 2031 - 2040

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被引用次数: 38

摘要

Substitued 2-methylene-tetrahydrofurans are obtained by an efficient cyclisation of acetylenic alcohols and phenols. The presence of an electron-withdrawing group activates the triple bond and leads to high yields under weakly basic or acidic conditions. Our cyclisation products are stable against hydrolysis.