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.
取代的 2-亚甲基-四氢呋喃是通过乙炔醇和酚类的有效环化获得的。吸电子基团的存在会激活三键,并在弱碱性或酸性条件下导致高产率。我们的环化产品对水解很稳定。