Diastereoselective Synthesis of 2,5-Disubstituted Decahydroquinolines via Ring-Rearrangement Metathesis and Zirconium-Mediated Cyclization
作者:Siegfried Blechert、Jürgen Neidhöfer
DOI:10.1055/s-2004-834904
日期:——
zirconium-mediated cyclization of unsaturated a,a'-disubstituted piperidines II is described. The required piperidines could be obtained from secondary sulfonamides III via ruthenium-catalyzed ring-rearrangement metathesis (RRM) in high yields. Racemic trans-195A and 2-epi-trans-195A were synthesized in 8 steps starting with butyraldehyde and cyclohex-2-enol.
描述了通过锆介导的不饱和 a,a'-二取代哌啶 II 环化对 2,5-取代十氢喹啉的非对映选择性方法。所需的哌啶可以通过钌催化的环重排复分解 (RRM) 从仲磺酰胺 III 中以高收率获得。外消旋 trans-195A 和 2-epi-trans-195A 从丁醛和 cyclohex-2-enol 开始分 8 步合成。