PFLIEGER, D.;MUCKENSTURM, B., TETRAHEDRON, 45,(1989) N, C. 2031-2040
作者:PFLIEGER, D.、MUCKENSTURM, B.
DOI:——
日期:——
Cyclisation of 6-hydroxy-2-ynals and ynoates: a new pathway to substituted 2-nethylene-tetrahydrofurans
作者:D. Pflieger、B. Muckensturn
DOI:10.1016/s0040-4020(01)80065-x
日期:1989.1
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.