Lewis acid catalyzed formation of 3-amino-3-carboxy-tetrahydroquinoline derivatives via tandem 1,5-hydride transfer/cyclization process
作者:Wen-Yong Han、Jian Zuo、Zhi-Jun Wu、Xiao-Mei Zhang、Wei-Cheng Yuan
DOI:10.1016/j.tet.2013.06.047
日期:2013.8
A Sc(OTf)3-catalyzed intramolecular tandem 1,5-hydride transfer/cyclization process to construct 3-amino-3-carboxy-tetrahydroquinoline derivatives has been developed. The methodology gives access to a range of relatively complex tetrahydroquinolines (tetracyclic and pentacyclic heterocycles bearing spirocyclic skeleton and two stereogenic centers) in good to excellent yields with diastereoselectivities
已经开发了Sc(OTf)3催化的分子内串联1,5-氢化物转移/环化方法来构建3-氨基-3-羧基-四氢喹啉衍生物。该方法可以以相对高的非对映选择性(从57:43至73:27)获得一系列相对复杂的四氢喹啉(带有螺环骨架和两个立体异构中心的四环和五环杂环)。该方法的合成效用还通过有效的开环衍生化反应证明。