Intramolecular carbolithiation of <i>N</i>-allyl-ynamides: an efficient entry to 1,4-dihydropyridines and pyridines – application to a formal synthesis of sarizotan
作者:Wafa Gati、Mohamed M Rammah、Mohamed B Rammah、Gwilherm Evano
DOI:10.3762/bjoc.8.250
日期:——
developed a general synthesis of polysubstituted 1,4-dihydropyridines and pyridines based on a highly regioselective lithiation/6-endo-dig intramolecular carbolithiation from readily available N-allyl-ynamides. This reaction, which has been successfully applied to the formal synthesis of the anti-dyskinesia agent sarizotan, further extends the use of ynamides in organic synthesis and further demonstrates
我们已经开发了一种基于高度区域选择性锂化/6-endo-dig 分子内碳锂化的多取代 1,4-二氢吡啶和吡啶的一般合成方法,该方法来自容易获得的 N-烯丙基-炔酰胺。该反应已成功应用于抗运动障碍剂sarizotan的正式合成,进一步扩展了ynamides在有机合成中的应用,并进一步证明了碳金属化反应的合成效率。