Enantioselective Synthesis of Quaternary Stereocenters via a Catalytic Asymmetric Stetter Reaction
作者:Mark S. Kerr、Tomislav Rovis
DOI:10.1021/ja047644h
日期:2004.7.1
A new electron-deficient chiraltriazoliumsalt has been shown to catalyze the formation of quaternary stereocenters by an asymmetric intramolecular Stetter reaction. Pentafluorophenyl substitution on an aminoindanol-derived catalyst affords tertiary ether, thioether, and quaternary stereocenters in typically greater than 90% ee and very good chemical yield. Aromatic and aliphatic aldehydes are equally
一种新的缺电子手性三唑盐已被证明可通过不对称分子内 Stetter 反应催化四元立体中心的形成。氨基茚满醇衍生的催化剂上的五氟苯基取代提供了通常大于 90% ee 的叔醚、硫醚和季立体中心和非常好的化学产率。芳香醛和脂肪醛同样是该反应的有效底物。该反应在室温下温和条件下进行,以提供具有其他方法特别难以获得的官能团关系的四元立体中心。
Enantioselective formation of quaternary stereocenters using the catalytic intramolecular Stetter reaction
作者:Jennifer L. Moore、Mark S. Kerr、Tomislav Rovis
DOI:10.1016/j.tet.2006.06.042
日期:2006.12
Asymmetric formation of quaternary stereocenters has been accomplished using the catalyticintramolecular Stetter reaction. A variety of tethered aldehydes and Michael acceptors are cyclized in excellent yields and enantioselectivities.